Support beams for use in pouring concrete floors
(57) Abstract:Purpose: the invention relates to the field of building structures, particularly structures elongated beams, which can be used when pouring concrete floors in basements. The inventive reference beam contains a bottom supporting element and an upper bearing element with a flat sliding surface that allows the device for levelling concrete to slide on a flat surface. Beam contains two strong longitudinal side walls bounding the space concreting. At least one of the side walls with openings intended for the passage of liquid concrete into the space bridge. II C.p. f-crystals, 9 Il. The invention relates to a support beam of elongated form for use in pouring concrete floors in the basement, the specified reference beam contains a bottom supporting element and an upper bearing element with a flat sliding surface that allows the device for levelling concrete to move along the flat surface of the slide.Known supporting beams (PCT application N 90/12113, E 04 C 3/293, 1990) consist of a body, reinforced concrete, flat surface SC is on a concrete floor so the flat sliding surface was level with the surface of the finished concrete floor. The drawback of such cast concrete beams is a cracking first along one side of the upper support member beams, and then along the other side. After several years of operation, the top element of the beam and its flat sliding surface is damaged or destroyed completely or partially and need to make costly repairs. In addition, the process of destruction of the top element of the beam is enhanced by the presence of internal iron fittings. Very important is the quality of the concrete used for the production of beams. When using such concrete beams, the application of the covering layer is limited as well as the use of iron rebar. In addition, concrete beams can be used when pouring concrete floors only on the ground. Other foundations, such as overlap, there is a lack of connection between fresh and hardened concrete due to separate them concrete beams. In foundations formed from tapes that is prefabricated girder frame from concrete, steel or lightweight concrete, problems can occur with ADH is otnositelno a lot of time and is complicated by the fact that that heavy beams and placed in the fresh concrete, which can harden before pouring.The technical problem to be solved by the present invention is directed, is to develop a universal design supporting beams.The technical result is obtained as a result of implementation of the invention is to develop a lightweight support beams that can quickly and easily navigate in space, and the sliding surface can be set at any desired level, the risk of cracks in the concrete floor minimum, an increased degree of freedom of use of the iron rebar in the beam, as well as simplified installation of structures such beams.The reference beam is preferably used ShowLine concrete floors in the basement, contains the element with two longitudinal side walls, made with through-holes for passage of liquid concrete in their limited space and with mounting feet extending from each wall in the outer direction; a beam equipped hosted on the host element additional upper bearing element with a flat surface of the slide to ensure the PE the governmental holes for the passage of liquid concrete and provided with an adjusting screw to set the desired level of support beams, and the screws are installed inclined, and the angle formed by the side walls, mostly equals 20-90opreferably 60oor no more than 60o. The adjusting screws may further comprise a base plate for mounting on a Foundation. The top element can be made of two parts, the lower of which may be in the form of rubroarenosa the junction between the side walls of the lower element and the upper is made in the form of an element forming the rail and having a flat sliding surface, and the rail is mounted on repealedly the junction with the formation of permanent or temporary connections. The reference beam may further comprise soutourina locking connection, included in engagement with the opposite installation soles bottom of the locking member used for fixing the position of the side walls relative to each other. The openings in the side walls can be located not less than two long rows, with the holes in the opposite walls located opposite each other. The reference beam may include a flexible barrier for covering the holes in the side wall. One of the side walls may be located vertically and vypolneniyasvoey soles, in which the screws can be performed edges corresponding to the screw step screw, and in the area of the edge of the hole can be performed gap, the length of which is slightly greater than the depth of the thread of the screw, and the edge of the holes on each side of the slit are bent in mutually opposite directions to receive screw threads, and the contour edges is reduced to zero at diametrically opposite the slit side.In Fig. 1 shows a perspective of the support element according to the first variant implementation of the invention; Fig. 2 end view of the support element in accordance with Fig. 1; Fig. 3 a perspective of the support element according to the second variant implementation of the invention; Fig. 4 end view of the support element in accordance with Fig. 3; Fig. 5 7 the views from the ends of the supporting elements in accordance with the three further variants of carrying out the invention; Fig. 8 a top view of part of the adjusting soles with screws of the support element in accordance with Fig. 3 and 4; Fig. 9 is a section along the line IX-IX in Fig. 8.The support element shown in Fig. 1 and 2, usually defined as razravnivalis beam has a longitudinal realsoonnow shape and includes a support element 1 facing the bottom is nnow up flat sliding surface 3, designed for installation of a device for levelling concrete order slip on the specified surface 3, when it will move along the supporting beams. According to the present invention, the reference beam contains two longitudinal sustainable form, that is hard, side walls 4, 5 which, as can be seen from the cross-section girders, are stretched between the upper bearing element 2 and the lower supporting member 1. Between the side walls 4, 5 is the free space 6, which extends between the ends of the support element. According to the present invention, each side wall 4, 5 provided with several through holes 7, 8, evenly spaced across side wall in several horizontal rows. Each hole 7, 8 is large enough to allow fresh concrete to pass freely through the side walls into the space 6 and to gather there, the number of holes 7, 8 is enough and their distribution so evenly that the space 6 will be filled with concrete when the reference beam is immersed in the concrete until the concrete has hardened. The expression "solid side walls" means that the walls are strong enough to withstand, without deformation, the weight of the decree of the wall 4, 5 tilted one with respect to another so that they form an acute angle. Inside the upper bearing member 2 side walls 4, 5 are rigidly interconnected, forming a solid unit. The lower supporting element 1 contains each of the side walls 4, 5 installation the sole 9.10. Installation outsole 9, 10 are rigidly connected to side wall 4, 5 and is located on the opposite side from the space 6. Installation soles 9, 10 is also provided with several through holes 11, 12, intended for the passage of fresh concrete to the underside of the installation soles 9, 10, especially when the soles are installed at a distance from the Foundation. It is clear that the presence of the holes 7, 8, 9, 10 is the result of saving material and reducing the weight of the support element. However, the greatest reduction in weight of the support element is achieved through the space 6.Supporting element, and more precisely the support and alignment element, is made, preferably, of a flat metal sheets, which are curved so that the installation of the sole 9, 10 and side walls 4, 5 to the junction form a polyline. The joint or edge 13 between the walls 4, 5 may have a different design, forming the entire upper bearing is my second part in the form of a solid body 14, forming a rail; a specified body is located above the edge 13 and rigidly connected with it.In an embodiment shown in Fig. 1 and 2, this is achieved in that the edge 13 is connected with an upward flange 15, at the same time, the rail 14 is provided with a corresponding groove 16 for placement of the flange 15, thus, the rail 14 protects the edge 13. The rail 14 may be removable connected to the rib 13, which is useful when the rail 14 is removed after filling.In an embodiment shown in Fig. 3 and 4, the edge 13 of the upper bearing member 2 is made with a longitudinal groove 17, in this case, the body 14 of the vertex 2 has a lower portion 18 with a thickness corresponding to the width of the trench 17, allowing the rail 14 to be mounted in the groove 17 and retained therein for reception of a strong engagement. This option may be preferably used to fill in two floors, the first supporting element is shown in Fig. 3 and 4, is placed in a thick layer of concrete, and then on the item 2 of the reference beam is set to the lifting rail (not shown). Such lifting rail can be performed as the rail 14 in Fig. 1 and 2, and generates the second planar sliding surface located at a certain distance, such is animania has a thickness of, corresponding to the distance that is 10 mm in this example.The support element preferably also provides a means for equalizing the level of the flat surface of the slide 3 with the aim of finishing it to the desired device for levelling concrete level. This means the installation level, preferably consists of a screw 19, each with a terminal corresponding to the size of the holes 11, 12 in the installation soles 9, 10 so that the screws 19 can log in threaded connection with the edges of the holes, as shown in Fig. 3 and 4. Turning the screw 19 in one or the other direction, the vertical position of the support element can be quickly and easily adjusted. To facilitate screwing the screws 19 may be provided with means of connection to the element of rotation, for example, a hole 20 in the upper end of the screw with a rectangular cross-section. Holes, or selected holes 11,12, for example, every fourth hole intended for the screws 19, it is advisable that had a shape in which the edge of the hole correspond to the thread pitch of the screw 19. This is achieved through the slit 25 made in the area of the edges of the holes 26, as illustrated in Fig. 8 and 9, the length of the slit 25 is slightly greater than the thread depth of the screw. The area which corresponds to the thread of the screw, bending the inclined surface is reduced to zero at the opposite side edges of the openings, as shown in Fig. 9. In the case of heavy foundations, such as overlap, it is enough that the lower ends of the screws had a small anchor head to bear on a bearing surface. When the Foundation is land, it is desirable that the screws 19 have been placed on a separate base plate 21, as shown in Fig. 3 and 4. If the Foundation consists of a slab or cassettes can be used special plastic spacers to raise the support element and reinforcing iron to the desired level.To protect the side walls from differences in hand, they can be upgraded with special locking means, such as clamps 22, which are secured them and are located between the installation soles 9, 10, as shown in Fig. 1 and 2.In the described embodiment, the holes 7, 8 are placed in three separate rows in each side wall 4, 5. This gives you more freedom when mounted armature iron.In an embodiment shown in Fig. 1 and 2, in the space of 6 provides a barrier for concrete, for example, the shutter 23 of flexible material, as shown what is to level the installation soles 9, 10. Thus, the shutter 23 is freely suspended in space 6. In the casting of concrete in the camera, the shutter 23 prevents the concrete penetrating through one of the side walls 4 or 5, to flow through one of the side walls 5 or 4, respectively, so as concrete, penetrating into the space 6, presses the shutter 23 to the inner side of one of the side walls 5 or 4, blocking thus the holes 8 or 7, respectively. Any unfilled volume in the space 6 is filled with concrete when casting will be on the other side of the support element in the adjacent compartment.In an embodiment shown in Fig. 5, the rib 13 has a flat horizontal surface and a solid body 14 forming the rail, has a relatively flat surface, allowing it to serve as a reliable support, for example, for funds of the respective binder.In an embodiment shown in Fig. 6, one side wall 4 is made inclined and provided with holes 7, as described above, the other side wall 5 is made of vertical and, moreover, has no holes. This reference beam forms a barrier and prevents the passage of concrete from one side to the other. It can be used against walls, for example, in apolline may be made of a material for example, lung or insulating material to absorb the sound in the frame, when the reference element is located against the wall. Vertical side wall 5 does not require the installation soles.In an embodiment according to Fig. 7, one side wall 4 is inclined, and the other vertical. Both side walls 4, 5 provided with holes 7, as described above. Vertical side wall 5 at its middle part has a recess for the formation of a longitudinal groove 24. This groove 24 is filled with concrete so that the finished concrete floor has a corresponding bulge, and the groove 24 and the convex form corresponding shunt connection, thereby preventing vertical movement of the concrete floor at the connection point. According to the alternative implementation (not shown) of the vertical side wall 5 provided with a corresponding bulge instead of the groove and thus the equivalent shunt connection when the concrete is poured.The reference beam containing the installation soles 9, 10, side walls 4, 5 and the rib 13 may be made of plastic, metal, such as steel, or metal, increasing in volume, wood, carrying nets of appropriate thickness (rigidity), or concrete.mnim, it can be moved, if required, when a concrete floor has hardened. In this case, the groove formed thereby in the floor, filled with the appropriate priming mixture used for worn-out floors.Since the side walls 4, 5 outside inclined from the upper support member, the concrete can more easily pass through the openings. Sloping side walls 4, 5 form with each other an acute angle 25 90o, preferably 30 to 60o. 1. The reference beam used for the manufacture of concrete floors in the basement, including a bearing element with two longitudinal side walls, made with through-holes for passage of liquid concrete in their limited space and with mounting feet extending from each wall in the outer direction, characterized in that it has placed on the host element additional upper bearing element with a flat sliding surface to provide moving on it devices for levelling concrete, each installation the sole is made with a through hole for passage of liquid concrete and provided with an adjusting screw to set the desired level of support beams, set the new panels are installed obliquely.3. Beam on PP.1 and 2, characterized in that the side walls form between 20 90opreferably 60o.4. Beam under item 3, characterized in that the angle of the side walls does not exceed 60o.5. Beam on PP.1 to 4, characterized in that the adjusting screws supplied with a base plate for mounting on a Foundation.6. Beam on PP.1 to 5, characterized in that the upper element is made of two parts, the lower of which is formed zebroobraznyj the junction between the side walls of the lower element and the upper-shaped element forming the rail and having a flat sliding surface, and the rail is mounted on repealedly the junction with the formation of permanent or temporary connections.7. Beam on PP.1 to 6, characterized in that it is provided zacharovannye locking means comprising engagement with the opposite installation soles bottom support element for fixing the position of the lateral walls of one relative to another.8. Beam on PP.1 to 7, characterized in that the openings in the side walls are arranged at least in two long rows, with the holes on one side and holes on the other side wall are offset holes in the side wall when the fresh concrete, placed in the space between the walls.10. Beam on PP.1 to 8, characterized in that one side wall is vertical and is made with a notch or bulge in the middle part for sportowego compounds in the finished concrete floor.11. Beam under item 1, characterized in that at least part of the holes in the installation soles, which posted the screws are made with hooks, the corresponding screw step screw.12. Beam on p. 11, characterized in that in the zone of the edge of the hole made the slit, the length of which is slightly greater than the depth of the thread of the screw, and the edges of the holes on each side of the slit are bent in mutually opposite directions to receive screw threads, and the contour edges is reduced to zero at diametrically opposite the slit side.
FIELD: building, particularly profiled beams to construct floor coverings with thickness of 25 - 40 mm for arranging finishing floors and other structures, for instance for flat roofs.
SUBSTANCE: profiled beam comprises longitudinal load-bearing member, two perforated side walls connected with bearing member and perforated bases extending from them in opposite directions. Each base has bent end forming longitudinal three-edged extension. The first edge is perpendicular to the major part of base. The second edge is parallel to the second one, the third extreme edge forms an angle of not less than 90o with the second one.
EFFECT: improved cohesion ability between beam and covering material.
8 cl, 5 dwg
SUBSTANCE: beam comprises compressed and stretched belts and wall. Wall consists of metal sheets perpendicular to planes of belts. Metal sheets have traditional or alternate corrugation on part of length as transverse to longitudinal axis of beam. Cavities formed between metal sheets on sections of intense transverse forces are filled with concrete. Corrugations on these sections remain with section permanent along wall height.
EFFECT: reduced metal intensity and increased bearing capacity of beam.
9 cl, 13 dwg
SUBSTANCE: in a composite beam structure there is one or more parts in the form of boards and a beam are connected together by means of an ingot. The beam structure comprises a steel beam, above which there is one or more mounting pins. Length of mounting pins at least three times exceeds the width of the upper surface of mounting pins. The pin is arranged with the possibility to transfer a force in connection between concrete and steel in the vertical and longitudinal direction relative to the beam. In a transverse cut perpendicular to a longitudinal direction of the pin there is at least one part, in which the pin width is more than on a section arranged directly below.
EFFECT: high-quality combination of technical parameters of a beam.
15 cl, 10 dwg
SUBSTANCE: truss comprises ascending compressed support and intermediate braces, stands and descending stretched braces. Upper and lower belts of the truss are made of equally stable double-tee sections. In the most stressed zone in the middle of the span the upper belt is converted into a tubular one by means of welding of closing sheets at sides to the double-tee section. All compressed elements of the truss lattice are made of oval pipes with the ratio of larger dimension to smaller one equal to three. Oval pipes are aligned with a larger dimension perpendicularly to the truss plane. Compressed braces are detached by two struts in the truss plane. After installation of the truss into the design position, hoses of concrete pipelines are connected to nozzles of closed tubular elements of the truss. Fine-grained expanding concrete is injected into cavities of elements with formation of guncrete elements after concrete setting.
EFFECT: improved durability and reliability of a truss.
SUBSTANCE: side member for performance of concrete works includes a support iron. The iron comprises a support foot that faces with its lower surface to the base and is made as capable of direction fixation on it with the help of fixtures. The iron comprises two vertical guide elements made as a whole with the support foot and stretching from it in parallel to each other to create a gap between them. The gap provides for location of a sliding element made as capable of displacement in the vertical direction relative to vertical guide elements and fixation to them.
EFFECT: elimination of cavity formation during hardening of filling material, provision of identical density of filling material during its hardening and reduction of labour intensiveness of member installation.
20 cl, 3 dwg
SUBSTANCE: invention relates to construction, namely, to composite beams working in bending, used as buildings load-bearing elements. Steel-reinforced concrete beam is made of two shaped thin-walled steel shells, forming upper and lower belts filled with reinforced concrete and flat wall, with die-fixed ribs interconnected by bends of die-fixed studs ends. To ensure upper belt constant size die-fixed studs with bends are engaged with mesh reinforcement.
EFFECT: technical result of invention consists in improvement of beam carrying capacity.
1 cl, 7 dwg
SUBSTANCE: steel-concrete beam consists of the upper and the lower belts, walls and supporting diaphragms forming a closed circuit filled with concrete. Wherein the walls have a curvilinear form of double curvature, the distance between which reduces from the upper belt to the lower one. In the walls there are openings and cutouts, which are located with variable pitch along the beam length in accordance with the shearing stress diagram. The walls are connected by pre-stressed tie rods.
EFFECT: reducing the material consumption of the steel-concrete beam.
4 cl, 12 dwg
SUBSTANCE: steel concrete beam comprising the upper and lower belts, the wall and the concrete located in a closed loop in the upper part of the beam section, has a closed loop for the concrete location. The closed loop is formed by the upper belt and the wall consisting of two sheets bent outwards in the upper part of the beam in accordance with the diagram of normal compressive stresses in the cross sections of the beam. The upper edges of the wall sheets are spaced in the horizontal plane and form along the beam length two curves corresponding to the bending moment diagram in the beam. The upper interface points of the wall sheets are located on a vertical curve corresponding to the bending moment diagram in the beam. And the wall sheets are united by retainers of variable length, which give it the curved shape along the beam height and length.
EFFECT: reducing the material consumption of the steel-concrete beam.
SUBSTANCE: i-beam with a corrugated wall comprises flanges and a wall made of metal corrugated sheet welded to them with a transverse arrangement of free-form corrugations. Wherein, the wall consists of two or more parallel interconnected corrugated sheets, and the flanges are made of steel-reinforced concrete, consisting of rigid reinforcement in the form of a corrugated metal sheet and reinforcing frame including longitudinal reinforcement and transverse reinforcement, which surrounds the longitudinal reinforcement, is connected to it, and its ends are bend-inwardly welded to the corrugated sheet of metal with an offset from the beam wall equal to not less than 50 mm.
EFFECT: increased durability, fire resistance, bearing capacity and cross-breaking strength of a beam with a corrugated wall in two planes and torsion strength, expansion of its application range in construction.
14 cl, 4 dwg
SUBSTANCE: element is proposed, including a concrete element (1) covered by a reinforcing ring from rolled sections (2), with openings (5) in flanges, arranged in rows with the same pitch and connecting cross elements, the ring being connected to the concrete element for the joint operation by means of concrete keys (6) located in the openings (5) of the rolled sections. According to the invention, the long-length steel concrete element is made with the possibility to increase the length, changing the shape by length and the position in space, wherein the concrete element and the reinforcing ring elements are connected monolithically, and the openings in the rolled sections are made with the possibility to be filled with concrete, forming simultaneously the concrete element (1) and the keys (6). As rolled sections (2), either corner sections or channels are used, and either reinforcing rods or plates are used as connecting cross elements.
EFFECT: expanding the area of using the steel concrete element as long-length bearing and non-bearing elements, reducing the labour consumption of manufacture due to the possibility of monolithically forming the long-length steel concrete element.
22 cl, 9 dwg