The method of reconstruction girder bridge

 

The invention relates to a bridge and can be used in the reconstruction of small and medium-sized single-span bridges on existing Railways. The method of reconstruction beam bridge includes under construction spans unrelated with the foundations of the existing bridge Foundation for pipe and tube with tip, running water pipes, disassembly during the interval of movement of the upper track structure and the superstructure, the piping soil compaction and the formation of embankments and restore on the mound superstructure. What's new is that the Foundation for pipe perform along the transverse axis of the existing bridge tape, monolithic reinforced concrete with expansion joints along the length, and the length of the Foundation are taking in excess of the distance between the extreme points below the embankment foot of the existing bridge in a vertical plane parallel to the transverse axis of the bridge, on the upper surface of the Foundation for pipe install longitudinal Nakatomi path, and on the end parts of the Foundation are mounted traction device, and perform pipe along the length of the composite monolithic open in the middle across the width of the bottom zelezobetonove Foundation moreover, each section after a set of at least 70% strength raspalublivajut and consistently as manufacturing moves section Nakatomi paths set on continuous footing, using traction devices. The technical result of the invention consists in the reconstruction of single-track and double-track bridges with significantly worn spans and weak Foundation soils, with the least possible labor and material costs. 13 C.p. f-crystals, 8 ill.

The invention relates to a bridge and can be used in the reconstruction of small and medium-sized single-span bridges on existing Railways.

The known method of reconstruction girder bridge including temporary diversion of the stream and the erection of structures under the existing spans (SU 1310470 A1, on 15.05.87).

Closest to the invention in its essence and the achieved result is a way of reconstructing beam bridge, which includes the construction under the superstructure unrelated with the foundations of the existing bridge Foundation for pipe and tube with tip, running water pipes, disassembly during the interval of movement of the upper and recovery on the mound superstructure (EN 2146742 C1, E 01 D 22/00, 20.03.2000).

The disadvantages of this method of reconstruction of the bridge are certain difficulties when it is used in the presence of the existing bridge soils with low strength characteristics in the zone of the stream, especially during periodic flow.

The present invention is to provide opportunities for reconstruction of bridges, including heavily worn spans, in conditions of weak soils podmostovoe base, while reducing labor and material costs in the operations and ensuring the reliability and longevity of the reconstructed bridge.

The problem is solved due to the fact that the method of reconstruction beam bridge, which includes the construction under the superstructure unrelated with the foundations of the existing bridge Foundation for pipe and tube with tip, running water pipes, disassembly during the interval of movement of the upper track structure and the superstructure, the piping soil compaction and the formation of embankments and restore on the mound superstructure, according to the invention the Foundation for pipe perform along the transverse axis of the existing bridge tapes is the fact that the distance between the extreme points below the embankment foot of the existing bridge in a vertical plane, parallel to the transverse axis of the bridge, on the upper surface of the Foundation for pipe install longitudinal Nakatomi path, and on the end parts of the Foundation are mounted traction device, and perform pipe along the length of the composite monolithic, open in the middle across the width of the bottom concrete sections, which in turn concreted in the mold, which is mounted on one of the end sections of strip Foundation, and each section after a set of at least 70% strength raspalublivajut and consistently as manufacturing moves section Nakatomi paths set on continuous footing, using traction devices, and after installing all pipe sections perform the joints between the sections, and at least one expansion joint, and concreted middle parts of the bottoms of the sections simultaneously combining them with ribbon Foundation.

In this case, the reconstruction of the double track girder bridge with a much worn the superstructure superstructure and the existing superstructure can be disassembled before the construction of the pipe and replaced it with temporary metal batch spans, which are mounted along the longitudinal axis of the path with support W is urednik breaks movement, while the construction of the pipe sections in the areas of foundations of existing bridge was made under temporary protection of metal batch spans without interruption of the movement and temporary batch of the superstructure is removed after the erection of pipes and waterproofing.

Strip Foundation can do with a transverse projecting down the walls of the end sections.

Strip Foundation can form in the pit, which is performed along the transverse axis of the existing bridge, and at the bottom of the pit perform training of lean concrete, and after the construction of the Foundation produce backfill of the pit, preferably narcisista ground.

If available under the existing spans flow can produce a temporary diversion channel, and after the recovery on the mound superstructure flow is directed to the previous track.

Strip Foundation can do with release valve on the top surface in areas corresponding to the location of the average width of the bottoms of the pipe sections open their plots, and by combining the bottoms of the sections of the pipe with tape Foundation releases its armature is slid in the concrete areas of the bottoms of the pipe sections.

Pipe mogu on top with the institution on wall membrane waterproofing, for example from mastoplasty, over which is applied a protective layer of cement-sand mortar, and the outer surfaces of the walls are covered with two layers of the covering and waterproofing, while the joints between the pipe sections are made of two layers of mastoplasty, and around the perimeter of an expansion joint is placed an additional layer of mastoplasty with a minimum width of 50 cm

During backfilling pipe ground can pour both sides of horizontal layers with a thickness of 15-20 cm with compaction of each layer is preferably a light pneumotubograme.

Backfill pipe can be made in two stages, the first of which is carried out before removal of the temporary batch spans, and at this stage backfill produce to the bottom of the temporary batch spans in periods of interruption of the movement with the simultaneous creation of a reserve of soil in batch spans, with the observance of the envelope approximation buildings, and final backfill of the pipe after removal of the temporary batch superstructures made from the reserve and gondola with subsequent filling of the ballast section.

After backfilling of the pipe can produce the strengthening of input and output channels and embankment slopes.The bottom of the formwork can be done in the form of stocks of metal plates that before laying the concrete cover with parchment or plastic wrap.

Concreting pipe sections can produce by filing a concrete pumps with seal preferably deep vibrators with flexible shaft and a working body with a diameter not exceeding 75 mm, while the top of the concrete is compacted, preferably a vibrating beam, which sets slidable on the upper ends of the formwork panels, and after concreting an exposed surface of the concrete cover is preferably a polyethylene film, and after drying, moisturize.

The gap between the lower surface of the bottom of the pipe sections and the upper surface of the Foundation can fill dry cement in the process of moving sections, and lateral sinus between the walls of the pipe sections and the existing foundations of the bridge filled with cement-sand mortar, preferably with concrete.

Those who and reconstruction of single-track and double-track bridges with significantly worn spans and weak Foundation soils, with the least possible labor and material costs and minimal interruption of traffic, while ensuring the reliability and longevity of the reconstructed bridge.

The invention is illustrated by drawings, where

in Fig.1 shows the existing bridge, side view;

in Fig.2 is the same cross section;

in Fig.3 - stage reconstruction of the existing bridge with the Foundation for the pipe and installed temporary batch spans, top view;

in Fig.4 is a Foundation with reinforcement bars in the plan;

in Fig.5 - the Foundation for pipe installed formwork, longitudinal section;

in Fig.6 - move made section under the existing bridge, longitudinal section;

in Fig.7 - node Association section of pipe with the Foundation of the cross section;

in Fig.8 - rebuilt axle, longitudinal section.

The method of reconstruction girder bridge 1 includes the construction under the existing spans 2 is not correlated with foundations 3 existing bridge 1 Foundation under 4 pipe 5 pipe 5 with the end walls 6, the execution of waterproofing 7 pipe 5, disassembly during the interval of movement of the upper structure 8 ways and the superstructure 2 with postroeniya 8 ways. Foundation 4 for pipe 5 perform along the transverse axis 10 of the existing bridge 1 tape, monolithic reinforced concrete with expansion joints 11 in length. The length L of the Foundation 4 accept in excess of the distance I between the extreme points below the embankment foot 9 existing bridge 1 in a vertical plane parallel to the transverse axis 10 of the bridge 1. On the upper surface 12 of the Foundation 4 for pipe 5 establish longitudinal Nakatomi path (not shown), and the end parts 13 of the Foundation 4 is mounted traction device 14, and the pipe 5 perform along the length of the composite of reinforced concrete sections 15, open at the average width of the bottom 16. Reinforced concrete sections alternately concreted in the casing 17, which is mounted on one of the end sections 13 of strip Foundation 4. Each section 15 after a set of at least 70% strength raspalublivajut and consistently as manufacturing moves section 15 Nakatomi tracks mounted on the tape Foundation 4, using traction devices 14. After installing all of the sections 15 of the pipe 5 perform the joints 18 between the sections 15, and at least one expansion joint 19, and concreted middle sections 20 of the bottoms 16 of the sections simultaneously combining them with tape fu is the upper structure 8 ways and existing superstructure 2 assort before the construction of the pipe 5 and replace it with temporary metal batch spans 21, which are mounted along the longitudinal axis 22 of ways with resting in the sleeper support (not shown) which are built up under the protection of the hanging rail packages (not shown) installed in advance during regular breaks movement, while the construction of the sections 15 of the pipe in the areas of foundations of existing bridge was made under temporary protection of metal batch spans 21 without interruption of the movement and temporary batch spans 21 is removed after the erection of the pipe 5 and waterproofing 7.

Strip Foundation 4 perform with transverse protruding down walls 23 on the end parts 13.

Strip Foundation 4 form in the pit (not shown), which carry along the transverse axis 10 of the existing bridge 1, and at the bottom of the pit (not shown) carry out training of lean concrete, and after the construction of the base 4 produce backfill excavation preferably narcisista ground.

If available under the existing spans 2 watercourse produce a temporary diversion channel, and after the recovery on the embankment of the upper structure 8 the way of the flow is directed to the previous track.

Strip Foundation 4 perform with reinforcement bars 25 on the upper surface 12 on teaching is the Association of the bottoms 16 of the pipe sections 5 tape Foundation 4 releases its armature is slid in the concrete areas of the bottoms 16 of the pipe sections 5.

Pipe 5 is performed in the cross-section is rectangular, and waterproofing pipe 7 is performed by coating the pipe sections 5 on top with the institution on wall membrane waterproofing 7, for example, from mastoplasty, over which is applied a protective layer of cement-sand mortar, and the outer surfaces of the walls are covered with two layers of covering waterproofing, if the seams 18 between the pipe sections 5 are made of two layers of mastoplasty, and around the perimeter expansion joint 19 stack additional layer of mastoplasty with a minimum width of 50 cm

During backfilling of the pipe 5 soil occiput both sides of horizontal layers with a thickness of 15-20 cm with compaction of each layer is preferably a light pneumotubograme.

Backfill pipe 5 is produced in two stages, the first of which is carried out before removal of the temporary batch spans 21, and at this stage backfill produce to the bottom of the temporary batch spans 21 during periods of interruption of the movement with the simultaneous creation of a reserve of soil in batch spans 21, with the observance of the envelope approximation buildings, and final backfill pipe 5 after removal of the temporary batch spans s 5 produce the strengthening of input and output channels and embankment slopes 9.

The casing 17 for concrete pipe sections 5 are made of inner and outer shields (not shown), and initially mounted internal shields, then install the valve sections, then assembled billboards, with slits at the dock seal shields, and smooth out irregularities, for example, silicone, the surface of the casing 17, in contact with concrete, covered with grease.

The bottom of the casing 17 can be performed in the form of stocks (not shown) of metal plates that before laying the concrete cover with parchment or plastic wrap.

Concreting sections of the tube 15 is produced by filing a concrete pumps (not shown) seal, preferably deep vibrators with flexible shaft and a working body with a diameter not exceeding 75 mm, while the top of the concrete is compacted, preferably a vibrating beam (not shown), which sets slidable on the upper ends of the formwork panels 17, and after concreting an exposed surface of the concrete cover is preferably a polyethylene film, and after drying, moisturize.

The gap between the lower surface of the bottom 16 of the pipe sections and the top surface of Fundamenta fill the dry cement in the process perampanel a cement-sandy solution preferably with a concrete pump.

Claims

1. The method of reconstruction beam bridge, which includes the construction under the superstructure unrelated with the foundations of the existing bridge Foundation for pipe and tube with tip, running water pipes, disassembly during the interval of movement of the upper track structure and the superstructure, the piping soil compaction and the formation of embankments and restore on the mound superstructure, characterized in that the Foundation for pipe perform along the transverse axis of the existing bridge tape, monolithic reinforced concrete with expansion joints along the length, and the length of the Foundation are taking in excess of the distance between the extreme points below the embankment foot of the existing bridge in a vertical plane, parallel to the transverse axis of the bridge, on the upper surface of the Foundation for pipe install longitudinal Nakatomi path, and on the end parts of the Foundation are mounted traction device, and perform pipe along the length of the composite monolithic open in the middle across the width of the bottom concrete sections, which in turn concreted in the mold, which is mounted on one of the end sections of the tape foundatoin move sections Nakatomi ways, set on continuous footing, using traction devices, and after the installation of all pipe sections perform the joints between the sections and at least one expansion joint and concreted middle parts of the bottoms of the sections simultaneously combining them with ribbon Foundation.

2. The method according to p. 1, characterized in that the reconstruction of the double track girder bridge with a much worn the superstructure superstructure and the existing superstructure dismantled before the construction of the pipe and replace it with temporary metal batch spans, which are mounted along the longitudinal axis of ways with resting in the sleeper supports, which are erected under the protection of the hanging rail packages installed in advance during regular breaks movement, while the construction of the pipe sections in the areas of foundations of existing bridge was made under temporary protection of metal batch spans without interruption of the movement, and temporary batch of the superstructure is removed after the erection of pipes and waterproofing.

3. The method according to any of paragraphs.1 and 2, characterized in that the tape Foundation operates with a transverse projecting down the walls of the end sections.

along the transverse axis of the existing bridge, and at the bottom of the pit perform training of lean concrete, and after the construction of the Foundation produce backfill of the pit, preferably narcisista ground.

5. The method according to any of paragraphs.1-4, characterized in that in the presence of the existing spans watercourse produce a temporary diversion channel, and after the recovery on the mound superstructure flow is directed to the previous track.

6. The method according to any of paragraphs.1-5, characterized in that the tape Foundation operates the release valve on the top surface in areas corresponding to the location of the average width of the bottoms of the pipe sections open their plots, and by combining the bottoms of the sections of the pipe with tape Foundation releases its armature is slid in the concrete areas of the bottoms of the pipe sections.

7. The method according to any of paragraphs.1-6, characterized in that section of the tubes have a cross-section is rectangular, and the waterproofing of the pipe is accomplished by coating the pipe sections on top with the institution on wall membrane waterproofing, for example, from mastoplasty, over which is applied a protective layer of cement-sand mortar, and the outer surfaces of the walls are covered with two layers of covering waterproofing, if the seams between the Council of Europe is sustained fashion layer mastoplasty with a minimum width of 50 cm

8. The method according to any of paragraphs.1-7, characterized in that during backfilling of pipe soil occiput both sides of horizontal layers with a thickness of 15-20 cm with compaction of each layer, preferably a light pneumotubograme.

9. The method according to p. 8, characterized in that the backfill pipe is produced in two stages, the first of which is carried out before removal of the temporary batch spans, and at this stage backfill produce to the bottom of the temporary batch spans in periods of interruption of the movement with the simultaneous creation of a reserve of soil in batch spans with respect envelope approximation buildings, and final backfill of the pipe after removal of the temporary batch superstructures made from the reserve and gondola with subsequent filling of the ballast section.

10. The method according to any of paragraphs.1-9, characterized in that after backfilling of the pipe to produce the strengthening of input and output channels and embankment slopes.

11. The method according to any of paragraphs.1-10, characterized in that the formwork for the concrete pipe sections are made of inner and outer shields, and initially mounted internal shields, then install the valve sections, and then mount the Nar is the surface of the casing, in contact with concrete, covered with grease.

12. The method according to any of paragraphs.1-11, characterized in that the bottom of the casing is performed in the form of stocks of metal plates that before laying the concrete cover with parchment or plastic wrap.

13. The method according to any of paragraphs.1-12, characterized in that the pouring pipe sections produced by supplying concrete pumps with seal preferably deep vibrators with flexible shaft and a working body with a diameter not exceeding 75 mm, while the top of the concrete is compacted, preferably a vibrating beam, which sets slidable on the upper ends of the formwork panels, and after concreting an exposed surface of the concrete cover is preferably a polyethylene film and, when dry, moisturize.

14. The method according to any of paragraphs.1-13, characterized in that the gap between the lower surface of the bottom of the pipe sections and the upper surface of the Foundation is filled with dry cement in the process of moving sections, and lateral sinus between the walls of the pipe sections and the existing foundations of the bridge filled with cement-sand mortar preferably with a concrete pump.

 

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