CN-224227627-U - Pile slab bridge suitable for underpass railway bridge

CN224227627UCN 224227627 UCN224227627 UCN 224227627UCN-224227627-U

Abstract

The utility model discloses a pile plate bridge suitable for a downward-penetrating railway bridge, which relates to the technical field of railway building construction and comprises pile plates, pile foundations and supporting rib cages, wherein the pile plates are provided with connecting holes, the upper ends of the connecting holes are provided with supporting rib nets, the upper ends of the pile foundations are fixedly arranged in the connecting holes and positioned below the supporting rib nets, the lower ends of the pile foundations are used for being buried in a foundation, the supporting rib cages comprise connecting ribs, inclined ribs, ring ribs and stirrups, the connecting ribs comprise first sections, second sections and third sections which are sequentially connected, the second sections and the third sections are positioned above the pile foundations, the third sections extend towards the direction close to the central axis of the pile foundations, the stirrups are connected to each second section, the two ends of the inclined ribs are respectively connected to the second sections and the third sections, and form a triangular structure, the supporting rib cages form a self-stabilizing structure, the ring ribs are connected to each third section, at least two third sections and the ring ribs form a supporting net, the supporting net is abutted to the lower part of the supporting rib net, the foundation is additionally loaded in the construction process, and the influence on the railway bridge structure is reduced.

Inventors

CAI XIANTANG
REN WEIFENG
FAN XUEMEI
HUANG JUNGUANG
LI LEI
WANG SONGFAN
HUANG LIWEI
XU ZHIJIE
PAN PENGYU

Assignees

广州市设计院集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250423

Claims (10)

1. A stake slab bridge suitable for use in a underpass railroad bridge, comprising: The pile plate is provided with a first direction, a second direction and a third direction which are perpendicular to each other, the third direction is the up-down direction, the pile plate is provided with a connecting hole, and the upper end of the connecting hole is provided with a top rib net; The upper end of the pile foundation is fixedly arranged in the connecting hole and positioned below the top rib net, and the lower end of the pile foundation is buried in the foundation; the support rib cage is arranged in the connecting hole and comprises connecting ribs, inclined ribs, ring ribs and stirrups, and the connecting ribs comprise a first section, a second section and a third section which are sequentially connected; The first section and the second section extend along the third direction respectively, the first section stretches into the pile foundation, the second section and the third section are located above the pile foundation, the third section extends towards the direction close to the central axis of the pile foundation, at least two connecting ribs are arranged around the central axis of the pile foundation at intervals, stirrups are connected to each second section, the number of diagonal ribs is consistent with that of the connecting ribs, each diagonal rib is connected with each connecting rib one by one, and two ends of each diagonal rib are correspondingly connected to the second section and the third section respectively and form a triangular structure, so that the supporting rib cage forms a self-stabilizing structure; The ring ribs are located above the third sections and connected to each third section, at least two third sections and the ring ribs form a supporting net, and the supporting net is abutted to the lower portion of the top rib net.
2. A pile-slab bridge suitable for a underpass railway bridge as set forth in claim 1, wherein one end of said diagonal rib is located at one end of said third section remote from said second section, the other end of said diagonal rib is located at one end of said second section near said first section, and said second section, said third section and said diagonal rib enclose said triangular structure.
3. The pile-sheet bridge for a underpass railway bridge as set forth in claim 2, wherein the diagonal ribs have a first bending portion and a second bending portion at each end, the first bending portion extending in the third direction and being connected to the second section, the second bending portion being located below the third section, and the second bending portion being connected to the third section.
4. A pile-slab bridge suitable for use in a underpass railway bridge as set forth in claim 1, wherein said stirrups are circumferentially enclosed about at least two of said second sections, and a stirrup is attached to each of said second sections, said stirrups being provided in at least two, at least two of said stirrups being spaced apart along said third direction to form a columnar structure.
5. A pile-sheet bridge suitable for a underpass railway bridge as set forth in claim 1, wherein said top reinforcement mesh comprises at least two top transverse ribs and at least two top longitudinal ribs, said top longitudinal ribs extending in said first direction, at least two said top longitudinal ribs being spaced apart in a second direction, said top transverse ribs extending in said second direction, at least two said top transverse ribs being spaced apart in said first direction, said top transverse ribs being located above said top longitudinal ribs.
6. A pile-slab bridge suitable for a downward passing railway bridge is characterized in that one end of the connecting hole, which is far away from the top rib net, is provided with at least two groups of bottom transverse rib groups and at least two groups of bottom longitudinal rib groups, wherein the bottom longitudinal rib groups extend along the first direction, the at least two groups of bottom longitudinal rib groups are arranged at intervals along the second direction, the bottom transverse rib groups extend along the second direction, and the at least two groups of bottom transverse rib groups are arranged at intervals along the first direction.
7. The pile-sheet bridge for a downward passing railway bridge of claim 6, wherein said bottom transverse rib group comprises a spliced transverse rib and two prefabricated transverse ribs, the two prefabricated transverse ribs are positioned at two ends of said connecting hole along said second direction, and two ends of said spliced transverse rib are respectively connected with the two prefabricated transverse ribs.
8. The pile-sheet bridge for a downward passing railway bridge of claim 6, wherein said bottom longitudinal bar set comprises a spliced longitudinal bar and two prefabricated longitudinal bars, the two prefabricated longitudinal bars are positioned at two ends of said connecting hole along said first direction, and two ends of said spliced longitudinal bar are respectively connected to the two prefabricated longitudinal bars.
9. A pile-slab bridge for a underpass railway bridge as set forth in claim 1, wherein said pile-slabs are provided in at least two sets, at least two sets of said pile-slabs being disposed at intervals along said second direction, and wherein a post-cast strip is formed between adjacent sets of said pile-slabs, said post-cast strip extending along said third direction.
10. The pile slab bridge applicable to the underpass railway bridge as set forth in claim 9, wherein post-cast rib nets are arranged in the post-cast strip, both ends of the post-cast strip along the third direction are respectively provided with post-cast rib nets, each post-cast rib net comprises at least two post-cast rib groups and at least two post-cast longitudinal ribs, the post-cast longitudinal ribs extend along the first direction, at least two post-cast longitudinal ribs are arranged at intervals along the second direction, the post-cast rib groups extend along the second direction, and at least two post-cast rib groups are arranged at intervals along the first direction.

Description

Pile slab bridge suitable for underpass railway bridge Technical Field The utility model relates to the technical field of railway building construction, in particular to a pile slab bridge suitable for a underpass railway bridge. Background With the continuous development of urban construction and railway traffic, a new road adopts a scheme of passing through construction from the lower part of a railway bridge, so that the three-dimensional intersection is realized, and the traffic conflict is reduced. The pile slab bridge is one of the modes of passing through the railway bridge under the road, at present, the pile slab bridge has two construction modes of full cast-in-situ and full prefabrication, the pile foundation of the full prefabrication pile slab bridge adopts a soil squeezing mode to pile, the soil body is transversely extruded and raised, and the like, so that the safety of a railway bridge structure is threatened, the pile foundation is directly placed on the foundation when the precast pile slab and the precast pile foundation are spliced on site, the additional load born by the foundation is increased, the operation safety of a railway is further influenced, and the construction loads such as a bracket, a template and the like adopted in the construction process of the full cast-in-situ pile slab bridge directly act on the foundation, the additional load of the foundation is increased, and the safety of the railway bridge structure is further influenced. Disclosure of utility model The utility model aims to at least solve one of the technical problems in the prior art, and provides a pile-slab bridge suitable for a down-passing railway bridge, which reduces the additional load born by a foundation in the construction process and reduces the influence on the structure of the railway bridge. According to the embodiment of the utility model, a pile slab bridge suitable for a downward passing railway bridge is provided, and comprises pile slabs, pile foundations and support rib cages, wherein the pile slabs are provided with a first direction, a second direction and a third direction which are perpendicular to each other, the third direction is the up-down direction, the pile slabs are provided with connecting holes, the upper ends of the connecting holes are provided with top rib nets, the upper ends of the pile foundations are fixedly arranged in the connecting holes and are positioned below the top rib nets, the lower ends of the pile foundations are used for being buried in foundations, the support rib cages are arranged in the connecting holes, each support rib cage comprises connecting ribs, inclined ribs, annular ribs and hooping ribs, the connecting ribs comprise a first section, a second section and a third section which are sequentially connected, the first section and the second section extend in the third direction respectively, the first section stretches into the pile foundations, the second section and the third section are positioned above the pile foundations, the third section extends towards the direction close to the central axis of the pile foundations, the third section is provided with at least two connecting ribs which are arranged in the direction of the central axis, the number of the connecting ribs corresponds to the third section, the number of the connecting ribs is equal to that of the third section, each supporting rib cage is formed by the number of the connecting ribs, each connecting section is formed by the two corresponding to the third section, and the three supporting ribs are respectively, and each supporting rib is connected with the two sections, and the three supporting ribs are respectively, and the connecting sections are in a triangular structure. The pile slab bridge suitable for the underpass railway bridge has the advantages that the third section of the connecting rib extends from one end of the second section to the central axis close to the preset hole, two ends of the inclined rib are respectively connected with the second section and the third section, the second section, the third section and the inclined rib form a triangular structure, a triangular structure is formed between each inclined rib and each connecting rib, and the stirrups are connected with each connecting rib, so that the supporting rib cage forms a self-stabilizing structure. Because the first section stretches into the pile foundation, when pouring the pile foundation, place the first section in the downthehole of pouring of pile foundation, because the supporting rib cage forms from steady structure, need not to set up extra device in order to stabilize the supporting rib cage on the ground, the additional load of ground reduces in the work progress, reduces the influence to current railway bridge structure. The annular ribs are located above the third sections and connected to each third section, at least two third sections and the annular ribs form a supporting net, the