Device to provide wind-resistance of wooden log house

FIELD: building, particularly erection of wooden houses in areas characterized by strong winds.

SUBSTANCE: device comprises steel pre-stressed frame control rods adapted for structure tightening to base by anchoring lower control rod ends in foundation and by connecting upper ends thereof to structure top. The control rods are provided with spring-loaded clutches, which create and regulate tightening force applied to control rods. The control rods are formed of chains, which provide control rod length change for value equal to chain length. Upper control rod ends are connected to upper parts of roof timbers connected to log house. Spring-loaded clutch formed of steel pipe is provided with manual regulation lever, orifice for above lever installation and disc spring set.

EFFECT: prevention of stability losses and separation of joints between log house timber sets under the action of strong wind and as a result of natural log house shrinkage.

2 cl, 3 dwg

 

The invention relates to the field of construction of buildings and structures made from wooden planks and logs for areas with large and superlarge wind loads.

A device for ensuring the sustainability of wooden masts for wind load bearing exterior steel stacked delays designed for unfastening the mast in three or four directions by fixing their lower ends in the plane of the base of the mast and the mounting of the upper ends of the height of the mast. The device is equipped with screw couplings to eliminate periodic sagging delays and ensure the vertical position of the mast. When the mast is assembled in the Bush of three, four, or six logs set vertically and connected by bolting through the wooden dowels (see Carlsen, and other Wooden structures. Ed 2nd, revised. M.: stroiizdat, 1952. - s-630).

The disadvantage of the described device is to reduce the rigidity of the wooden mast over time, as delays are not in constant tension and gradually weaken, which can lead to the swaying mast.

Closest to the proposed invention's technical characteristics and the achieved result (prototype) is a device for increasing the stability of the Ostankino tower, dwell 522 m to wind load is e, containing steel prestressed thrust intended for expansion of the structure to the base, the longitudinal compression of the body of the tower and increase its Flexural rigidity. Steel traction made in the form of ropes and laid around the perimeter of circular reinforced concrete section from the top of the tower to its Foundation (see Bondarenko V.M., Suvorin became popular reinforced Concrete and masonry design: Textbook. for students on special. "Prom. and CIV. p-in". - M.: Higher. HQ., 1987. - 384 s, Fig.6).

The main disadvantage of the device to increase the stability of the Ostankino TV tower is the lack of possibilities of its application to ensure the sustainability of the wooden frame to wind load, because it is impossible when using wooden frame simultaneously consider and stability from tipping over, and the need for tight clamping of the crown frame to each other, and large sedimentary deformation chopped wood structures caused by natural shrinkage and swelling of wood.

The invention aims to prevent buckling, and disclosure of the joints between the crowns of the walls at high wind loads and natural draught or lifting the wooden frame.

To achieve this, the technical result in the device to ensure the sustainability of the wooden frame to wind load, the ZEC, containing steel prestressed thrust intended for drawing the buildings to the ground by anchoring their lower ends to the base and the attachment of the upper ends to the top of the structures according to the invention steel Octavia thrust with a spring coupling for generating and regulating the tension in ostovich rods, and are made from chains to change the length of pull on the size of the chain link is attached at upper ends to the top of the rafters of the wooden frame.

In addition, the device has a retaining collar, covering the top of the rafters of the wooden frame to transmit compressive efforts through the rafters to the walls of the cabin.

Preventing buckling wooden frame to wind load and providing density abutment crowns log to each other is achieved by the production of steel ostovich rod chain with spring clutches, creating and regulating the tension in ostovich rods, which is transmitted to the walls of the frame and compresses them. In terms of lateral wind load in rods located by the wind, there is an additional tension and rods with opposite wind side - force stretching decreases or completely disappears. After some time frame gives the draught, but due to pre-stressing springs, couplings, springs a number of the attenuated but continue to compress the wall. If required, the spring can be tightened or loosened with the periodicity defined in the rules of operation.

The invention is illustrated by drawings, where figure 1 shows a General view of the device to ensure the sustainability of the wooden frame to wind load, mounted on the frame, which is represented in vertical longitudinal section; figure 2 - General view of the spring clutch; figure 3 - General view of the spring clutch in the section.

Device for ensuring the sustainability of the wooden frame to wind load contains steel prestressed Octavia thrust 1, intended to pull the wooden frame to the base 2 by fastening their upper ends to the top frame, namely to the top of the rafters 3, for example, by a steel four-petalled clamp 4 covering the top of the rafters 3 to transmit compressive efforts through the rafters 3 wall 5 of the frame, and fastening their lower ends by anchors 6, zamonolichennymi Foundation 7.

Octavia thrust 1 with a spring clutch 8, creating and regulating the tension in ostovich rods 1, and made of chains 9 to change the length of pull 1 on the size of the chain link 9.

Spring sleeve 8 made of a steel tubular body 10, provided with a lever 11 manual adjustment and contains holes 12 in the Tinqueux housing 10 for mounting of the lever 11. Inside the tubular housing 10 coaxially placed a set of Belleville spring washers 13, which has the thrust bearing 14 to facilitate rotation of the coupling lever 8 11 manual adjustment, the bottom 15 and top 16 plugs, lower the rod 17 and the upper rod 18 with the outer screw thread.

The lower shaft 17 fixed to its upper end within the coupling 8 and passes it through the holes on the bottom of the stub 15, a thrust bearing 14 and a set of Belleville spring washers 13. The upper rod 18 to its lower end with an external screw thread screwed into the internal thread of the upper stub 16 and the upper end is connected with the chain link 9 by means of hinges 19. The number and size of the Belleville spring washers chosen taking into account the efforts stretching in Mostovoi deadlift 1 and depends on wind load in this area. Pretensioning Mostovoy thrust 1 generated by the spring clutch 8 is transmitted to the wall 5 of the frame through the heel 20 of the frame legs and squeezes them.

Octavia thrust 1 is installed in the corners of the room and not interfere with functional activities facilities.

When exposed to wind Octavia thrust 1 work on stretching to leeward, and the wooden wall 5 of the frame on compression side opposite to the wind effect. Because the wooden frame has a settling effect of the shrinkage of wood is oberek fibers, thrust 1 must always be pre-stressed and pull crown frame between them. Without pre-tension thrust 1 weaken and do not prevent the disclosure of the gaps between the crowns of the framework and the blowing off of the wall 5 to leeward. This tension is created by a spring clutch 8, comes with a set of Belleville spring washers 13 installed inside the tubular body 10, so that deformation of the frame - precipitation or lift - were commensurate with the yielding of the springs of this clutch.

Device for ensuring the sustainability of the wooden frame to wind load works in the following way. Using the lever 11 manual adjustment, inserted into the holes 12, the spring clutch 8 is rotated around its axis and moves along the screw thread of the upper stub 16. This set of Belleville spring washers 13 is compressed or rassipaetsja depending on the direction of rotation of the lever 11 by changing the tension force in Mostovoi deadlift 1. Thrust bearing 14 facilitates manual rotation of the spring clutch 8 around its axis by the lever 11.

When you compress a set of Belleville spring washers 13 creates tension Mostovoy thrust 1. The tension force in ostovich rods 1 is passed through the retaining clamp 4 to the rafters 3 and then through the heel 20 of the rafters on the wall 5 of the frame, squeezing them.

In terms of lateral wind load and in rods 1, located by the wind there is an additional tension, and in rods 1 with opposite wind side of the force stretching decreases or completely disappears. After some time frame gives the draught, but due to pre-stressing of the springs of the clutch 8, the last few are attenuated, but continue to compress the wall 5. If required, the spring can be tightened or released at the intervals specified in the operating rules.

Thus, the use of the claimed invention ensures the stability of the wooden frame from tipping over and density of abutment crowns log to each other at high wind loads and natural draft frame, caused by shrinkage of the wood.

1. Device for ensuring the sustainability of the wooden frame to wind load containing steel prestressed thrust intended for drawing the buildings to the ground by anchoring their lower ends to the base and the attachment of the upper ends to the top of the structure, characterized in that the steel Octavia thrust with a spring coupling for generating and regulating the tension in ostovich rods, and are made from chains to change the length of pull on the size of the chain link is attached at upper ends to the top of the rafters of the wooden frame.

2. Device is about to claim 1, characterized in that it is provided with a retaining collar, covering the top of the rafters of the wooden frame to transmit compressive efforts through the rafters to the walls of the cabin.



 

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