CN214401389U

CN214401389U - Longitudinal abutted seam structure of newly-built bridge and current bridge

Info

Publication number: CN214401389U
Application number: CN202023259441.3U
Authority: CN
Inventors: 刘书杰; 徐俊; 杨波; 刘鹏; 张金峰; 刘蔷
Original assignee: Hohhot Municipal Engineering Design And Research Institute Co ltd
Current assignee: Hohhot Municipal Engineering Design And Research Institute Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-15
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a longitudinal abutted seam structure of a newly-built bridge and a current bridge, which comprises a GD elastic concrete layer; high-modulus polyurethane sealant is filled in the splicing seams above and below the foamed PE backing plate; the bottom of the joining groove is horizontally paved with a rubber plate and a steel plate from bottom to top in sequence, and a GD elastic concrete layer is filled in the joining groove above the steel plate. The advantages are that: the foamed PE backing plate effectively prevents the water seepage phenomenon at the splicing seams; the GD elastic concrete layer has higher toughness and can effectively adapt to the uneven settlement phenomenon of a newly-built bridge at a splicing seam and a current bridge; the steel plate plays a role of a bottom die and can prevent downward seepage during GD elastic concrete construction; the rubber plate can play an effective role in buffering vibration and impact generated when a vehicle passes through a newly-built bridge and a current bridge; the utility model discloses a mosaic structure can effectively adapt to the height difference sudden change that the phenomenon and formation were not subsided to the concatenation seam crossing of newly-built bridge and current situation bridge inhomogeneous, guarantees the driving travelling comfort.

Description

Longitudinal abutted seam structure of newly-built bridge and current bridge

The technical field is as follows:

the utility model relates to a bridge construction technical field, in particular to vertical piece structure of newly-built bridge and current situation bridge.

Background art:

along with the development of cities, the development of commercial areas and industrial areas and the reconstruction and expansion of roads, the width of a bridge built in the city part does not meet the use requirement of the roads, so that the bridge needs to be correspondingly widened and reconstructed, namely a new bridge with a splicing structure is newly built on one side or two sides of the built bridge; according to the traditional splicing mode of the newly-built bridge and the existing bridge, a gap is directly reserved at the splicing position between the newly-built bridge and the existing bridge, then asphalt crack pouring is carried out, the newly-built bridge usually has a settlement phenomenon, for the existing splicing mode, after uneven settlement occurs between the newly-built bridge and the existing bridge, the newly-built bridge and the existing bridge form obvious height difference mutation, and the bridge deck of the newly-built bridge and the bridge deck of the existing bridge are dislocated to form a ladder, so that traffic safety is seriously influenced; moreover, the joints are easy to seep, so that the bridge structure is corroded by rainwater, and the durability of the structure is influenced; to the above problem, the utility model provides a vertical piece structure of newly-built bridge and current situation bridge can overcome inhomogeneous settlement and infiltration problem.

The utility model has the following contents:

an object of the utility model is to provide a can avoid appearing inhomogeneous settlement because of splice joint department and leading to the newly-built bridge of bridge floor dislocation and infiltration phenomenon and the vertical piece joint structure of current situation bridge.

The utility model discloses by following technical scheme implement: a longitudinal abutted seam structure of a newly-built bridge and a current bridge comprises a GD elastic concrete layer, a steel plate and a rubber plate; a splicing groove is reserved between an asphalt pavement layer of a newly-built bridge and an asphalt pavement layer of a current bridge, a foaming PE base plate is filled in a splicing seam below the splicing groove, and high-modulus polyurethane sealant is filled in the splicing seams above and below the foaming PE base plate; the bottom of the joining groove is sequentially and horizontally paved with the rubber plate and the steel plate from bottom to top, and the joining groove above the steel plate is filled with the GD elastic concrete layer.

Furthermore, GD type sealant is filled between the GD elastic concrete layer and the asphalt pavement layer of the newly-built bridge and between the GD elastic concrete layer and the asphalt pavement layer of the existing bridge.

And further, a stainless steel water receiving box is fixed between the newly-built bridge and the existing bridge below the splicing seam.

Furthermore, the bottom of the stainless steel water receiving box is communicated with a drain pipe.

The utility model has the advantages that: the utility model discloses a foaming PE backing plate keeps apart newly-built bridge and current situation bridge, plays effectual cushioning effect to newly-built bridge and current situation bridge thermal expansion deformation, can effectively prevent the infiltration phenomenon of concatenation seam department moreover, avoids the bridge construction to receive the rainwater corruption, guarantees the structural durability ability; the GD elastic concrete layer has higher toughness, can effectively adapt to the settlement deformation between a newly-built bridge and a current bridge, effectively avoids the formation of obvious height difference mutation between the newly-built bridge and the current bridge, ensures the smooth transition of a bridge deck of the newly-built bridge and a bridge deck of the current bridge, and ensures the traffic safety; the steel plate plays a role of a bottom die and can prevent downward seepage during GD elastic concrete construction; the rubber plate can play an effective role in buffering vibration and impact generated when a vehicle passes through a newly-built bridge and a current bridge; the high-modulus polyurethane sealant plays a role in sealing; therefore, the splicing structure of the utility model can effectively adapt to the height difference mutation caused by the uneven settlement phenomenon at the splicing seam of the newly-built bridge and the current bridge, and ensure the driving comfort; and the splicing seam is not easy to seep water, so that the durability of the bridge structure is ensured.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

The parts in the drawings are numbered as follows: the novel high-modulus GD bridge comprises a newly-built bridge 1, a current bridge 2, a GD elastic concrete layer 3, a steel plate 4, a rubber plate 5, a connecting groove 6, a splicing seam 7, a foamed PE base plate 8, a high-modulus polyurethane sealant 9, a GD type sealant 10, a stainless steel water receiving box 11 and a drain pipe 12.

The specific implementation mode is as follows:

as shown in fig. 1, a longitudinal abutted seam structure of a newly-built bridge and a current bridge comprises a GD elastic concrete layer 3, a steel plate 4 and a rubber plate 5; a connecting groove 6 is reserved between an asphalt pavement layer of the newly-built bridge 1 and an asphalt pavement layer of the current bridge 2, a foaming PE backing plate 8 is filled in a splicing seam 7 below the connecting groove 6, the foaming PE backing plate 8 has good buffering and abrasion resistance, can change along with the expansion and contraction changes of the newly-built bridge 1 and the current bridge 2 at two sides, avoids extrusion damage caused by direct contact of the newly-built bridge 1 and the current bridge 2 due to expansion, has small water absorption, can effectively prevent the water seepage phenomenon at the splicing seam 7, avoids the bridge structure from being corroded by rainwater, and ensures the durability of the structure; the foamed PE backing plate 8 is good in chemical stability, not prone to corrosion and long in service life; high-modulus polyurethane sealant 9 is filled in the splicing seams 7 above and below the foamed PE backing plate 8; the sealing effect on the splicing seam 7 is good; the rubber plates 5 and the steel plates 4 are horizontally laid at the bottom of the connecting groove 6 from bottom to top in sequence, vibration and impact generated when a vehicle passes through the newly-built bridge 1 and the existing bridge 2 can be effectively buffered through the rubber plates 5, and the rubber plates 5 have good ageing resistance, cold resistance and heat resistance and can well protect the splicing seams 7; the GD elastic concrete layer 3 is filled in the joining groove 6 above the steel plate 4, the steel plate 4 plays a role of a bottom die and can prevent downward seepage during GD elastic concrete construction, the GD elastic concrete layer 3 is used for connecting a bridge deck pavement layer of the newly-built bridge 1 and the current bridge 2, the GD elastic concrete layer has high toughness and can effectively adapt to deformation between the newly-built bridge 1 and the current bridge 2, the uneven settlement phenomenon at the splicing seam 7 of the newly-built bridge 1 and the current bridge 2 is effectively reduced, obvious height difference mutation between the newly-built bridge 1 and the current bridge 2 is avoided, smooth transition of a bridge deck of the newly-built bridge 1 and a bridge deck of the current bridge 2 is ensured, and traffic safety is ensured; meanwhile, the GD elastic concrete is good in crack resistance and energy dissipation, and can effectively reduce shrinkage creep and uneven settlement; the splicing structure of the utility model can effectively reduce the height difference mutation caused by the uneven settlement phenomenon at the splicing seams 7 of the newly-built bridge 1 and the current bridge 2, and ensure the driving comfort; and splice seam 7 department is difficult to the infiltration moreover, guarantees bridge structures durability.

GD type sealant 10 is filled between the GD elastic concrete layer 3 and the asphalt pavement layer of the newly-built bridge 1 and the asphalt pavement layer of the existing bridge 2, so that an effective sealing effect is achieved, and water seepage is avoided; a stainless steel water receiving box 11 is fixed between the newly-built bridge 1 below the splicing seam 7 and the existing bridge 2, and the bottom of the stainless steel water receiving box 11 is communicated with a drain pipe 12; along with life's increase, the waterproof performance of concatenation seam 7 weakens gradually, can effectively collect the water from concatenation seam 7 seepage through setting up stainless steel water receiving box 11, finally along the orderly discharge of drain pipe 12, avoids influencing peripheral traffic.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A longitudinal abutted seam structure of a newly-built bridge and a current bridge is characterized by comprising a GD elastic concrete layer, a steel plate and a rubber plate; a splicing groove is reserved between an asphalt pavement layer of a newly-built bridge and an asphalt pavement layer of a current bridge, a foaming PE base plate is filled in a splicing seam below the splicing groove, and high-modulus polyurethane sealant is filled in the splicing seams above and below the foaming PE base plate; the bottom of the joining groove is sequentially and horizontally paved with the rubber plate and the steel plate from bottom to top, and the joining groove above the steel plate is filled with the GD elastic concrete layer.

2. The longitudinal abutted seam structure of the newly-built bridge and the existing bridge according to claim 1, wherein GD type sealant is filled between the GD elastic concrete layer and the asphalt pavement layer of the newly-built bridge and the asphalt pavement layer of the existing bridge.

3. The longitudinal splicing structure for the newly-built bridge and the existing bridge according to claim 1, wherein a stainless steel water receiving box is fixed between the newly-built bridge and the existing bridge below the splicing seam.

4. The longitudinal splicing structure of the newly-built bridge and the existing bridge according to claim 3, wherein a drain pipe is communicated with the bottom of the stainless steel water receiving box.