CN109183614B - Cable trough main bearing T-beam composite sidewalk and installation method thereof - Google Patents

Abstract

The invention discloses a cable trough main bearing T-beam composite material sidewalk and an installation method thereof. When the device is installed, the bracket is connected to the T beam; the guardrail round tube directly penetrates into the round hole on the bracket to be connected; then the cable groove is connected with the bracket through an expansion screw; and then the walking plate and the walking plate boundary beam form a walking plate integrated block, and the walking plate integrated block is laid on the cable groove. According to the invention, the cable trough is directly placed on the support, and the walking plate is directly laid on the cable trough, so that a cable trough cover plate part is omitted, the material cost is saved, and the strength requirement of the walking plate is lower. The installation is more convenient and quicker. The invention is made of composite material, and has the advantages of corrosion resistance, maintenance free, long service life, etc.

Description

Cable trough main bearing T-beam composite sidewalk and installation method thereof

Technical Field

The invention relates to the technical field of railway bridge engineering.

Background

At present, in the construction of a simple T-beam of a high-speed railway in China, a pedestrian walkway plate is basically made of C30 concrete, brackets are made of angle steel through mutual welding, the welded brackets are fixed on an embedded steel plate inside a slag wall of the simple T-beam in a bolt anchoring mode, stand columns are welded on the brackets through the angle steel, and round steel is inserted in the middle of the stand columns to serve as railings. The materials used at present are heavy, increase the load of the bridge deck and improve the structural strength requirements on the beam body and the pier; the transportation is inconvenient, the construction is difficult, the construction efficiency is low, and a large amount of manpower and material resources are needed during the construction; meanwhile, the angle steel is easy to rust and needs a large amount of manpower and material resources for maintenance; the production efficiency of the materials is low, and the rejection rate is high; and the conditions of local damage and the like are easy to occur in the installation process, and the appearance is not beautiful after construction.

In the prior art, the invention with application number CN201610148405.9 discloses a passenger-cargo collinear railway simply supported T-beam sidewalk combined structure and a combined method, and the combined structure comprises: the prefabricated reinforced concrete slab comprises embedded parts, steel beams and prefabricated reinforced concrete slabs; the embedded parts are arranged in prefabricated ballast retaining walls of the passenger-cargo collinear railways, and the root parts of the steel beams are fixedly connected with the embedded parts; the upper surface of the steel beam and the upper surface of the prefabricated ballast retaining wall are coplanar; the upper surface of the steel beam is provided with a prefabricated reinforced concrete plate; the prefabricated reinforced concrete slab comprises a transverse branch and more than one vertical branch, the vertical branch is fixedly connected with the transverse branch and extends upwards from the upper surface of the transverse branch, and the root of the transverse branch is reserved with an extending reinforcing steel bar outwards; the upper surface of the vertical branch is provided with an active powder concrete RPC cover plate. The invention with the application number of CN201610148404.4 discloses a simple T-beam sidewalk combination structure and a combination method for an inter-city railway. It includes: the concrete slab comprises embedded parts, steel cross beams and cast-in-place concrete slabs; the embedded part is arranged in a prefabricated protective wall of an intercity railway beam body, and the root of the steel beam is fixedly connected with the embedded part; the upper surface of the steel beam and the upper surface of the prefabricated protective wall are coplanar; concrete is cast on the upper surface of the prefabricated protective wall and the upper surface of the steel beam to form a cast-in-place protective wall and a cast-in-place concrete slab respectively, and the cast-in-place protective wall and the cast-in-place concrete slab are of an integrated structure. The invention with the application number of CN201610263153.4 discloses a railway line simply-supported T beam and an installation method thereof, and the railway line simply-supported T beam comprises a plurality of T beam modules A, a plurality of T beam modules B, a car avoidance platform, a guardrail, a cable groove, a sidewalk step plate and a car avoidance platform ladder, wherein two adjacent T beam modules A or one T beam module A and one car avoidance platform are connected through the T beam module B by bolts, the sidewalk step plate is arranged on the upper plane of the car avoidance platform, the car avoidance platform ladder is arranged at the lower end of the car avoidance platform, a turnover cover plate leading to the ladder to be rotatable is arranged in the sidewalk step plate on the plane of the car avoidance platform, the sidewalk step plates are arranged on the T beam modules A and the T beam modules B, and guardrails are arranged on the T beam modules A, T beam modules B and the car avoidance platform. The above prior art needs further improvement.

Disclosure of Invention

The invention provides a cable trough main bearing T-beam composite sidewalk and an installation method thereof, which can solve the problems of non-corrosion resistance, inconvenience in transportation, difficulty in construction and low construction efficiency of metal and concrete sidewalks.

The technical scheme of the invention is as follows: the utility model provides a cable duct owner bears T roof beam combined material pavement, is including connecting support, cable duct, the walking board integrated package on the T roof beam, the cable duct is placed on the support, and the walking board integrated package is laid on the cable duct.

Pre-buried metal pieces are pre-buried on the T beam, and the support is connected with the pre-buried metal pieces; the support comprises a T-beam connecting block, an upright post, a corner connecting piece and a cross beam, wherein the lower end of the upright post is connected to the right end of the cross beam through the corner connecting piece; the top and the bottom near the left end on the crossbeam are both provided with T beam connecting blocks, and the T beam connecting blocks are provided with through holes for bolts to pass through.

The cable trough main bearing T-beam composite sidewalk further comprises a guardrail round tube; the upright post is provided with a round hole for a guardrail round tube to pass through, and the guardrail round tube is connected with the bracket after being inserted into the round hole on the bracket; the guardrail round tube is made of a composite material.

The walking plate integrated block comprises a walking plate boundary beam and a walking plate, the two sides of the walking plate are clamped with the walking plate boundary beam, and the walking plate boundary beam and the walking plate are connected in a rivet, expansion screw, bolt or gluing mode; the support, the cable groove, the side beam of the walking plate and the walking plate are all made of composite materials.

The bracket is connected with the embedded metal piece through four bolts; the cable trough is connected with the bracket through an expansion screw, a bolt, a rivet or a pre-embedded threaded sleeve; the walking board integrated block is connected with the cable groove through a bolt, a rivet or an expansion screw.

The cable trough comprises a bottom plate, a left side plate, a right side plate and a middle isolation rib, wherein the left side plate and the right side plate are respectively connected to two sides of the upper surface of the bottom plate, and the middle isolation rib is arranged between the left side plate and the right side plate on the upper surface of the bottom plate; the top end of the left side plate is provided with a left flange extending horizontally to the right, the top end of the right side plate is provided with a right flange extending horizontally to the left, the top end of the middle isolation rib is provided with a middle flange extending horizontally to both sides, and the left flange, the right flange and the middle flange are respectively provided with a bolt hole for a bolt to pass through.

The cable trough is an integral structure formed by pultrusion integrally.

A method for installing a cable trough main bearing T-beam composite sidewalk comprises the following steps:

the method comprises the following steps: installing a support: connecting the support to the T beam by using a bolt, and roughly adjusting the support;

step two: installing a guardrail round pipe: penetrating a guardrail round tube into a round hole in the support, connecting the guardrail round tube with the support, and screwing a bolt to completely fix the support;

step three: installing a cable trough: placing the cable groove on the bracket, and connecting the cable groove with the bracket;

step four: assembling the walking board integrated block: assembling the walking plate and the walking plate boundary beam into a walking plate integrated block;

step five: installing the walking board integrated block: laying the walking board integrated block on a cable groove, and fixedly connecting the walking board integrated block with the cable groove;

step six: and (5) inspecting and trying to finish the installation of the cable trough main bearing T-beam composite sidewalk.

Pre-burying a pre-buried metal piece on the T beam, and connecting the bracket with the pre-buried metal piece on the T beam through four bolts; the side beam of the walking plate is connected with the walking plate through rivets, expansion screws, bolts or glue joint; the cable trough is connected with the bracket through an expansion screw, a bolt, a rivet or a pre-embedded threaded sleeve; the walking plate is connected with the cable groove through a bolt, a rivet or an expansion screw.

When the walking board integrated block is assembled, a single walking board is transversely placed, more than two walking boards are horizontally placed and are sequentially connected into a rectangular unit board from front to back, then the two sides of the rectangular unit board are clamped by the walking board boundary beams to be connected into the walking board integrated block, and the walking board boundary beams and the walking boards are connected together through rivets.

The invention overturns the traditional cable trough installation mode, directly places the cable trough on the bracket, and directly lays the walking plate on the cable trough, thereby saving the cable trough cover plate part, saving the material cost and having lower requirement on the strength of the walking plate. The installation of the whole structure (the connection of the cable trough and the bracket, the installation of the walking board integrated package and the cable trough, the assembly of the walking board integrated package and the like) is more rapid and convenient. The lug boss structure (comprising the left flange, the right flange and the middle flange) of the cable groove is arranged, and the lug boss structure of the cable groove can prevent the walking board integrated circuit block placed on the lug boss structure from moving left and right. The cable trough main bearing T-beam composite sidewalk is made of composite materials and has the advantages of corrosion resistance, maintenance free, long service life and the like.

Drawings

FIG. 1 is a schematic cross-sectional view of a cable trough main load-bearing T-beam composite sidewalk in accordance with the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of a stent according to the present invention;

FIG. 4 is a schematic cross-sectional view of a cable trough according to the present invention;

FIG. 5 is a cross-sectional view of a walking board edge beam of the present invention;

FIG. 6 is a longitudinal cross-sectional view of the footplate of the present invention;

fig. 7 is an isometric view of a cable trough primary load-bearing T-beam composite walkway (partial) of the present invention;

in the figure: the device comprises a support 1, a cable groove 2, a walking plate side beam 3, a walking plate 4, a guardrail circular tube 5, rivets 6, bolt bolts 7, a T-beam connecting block 8, a stand column 9, a corner connecting piece 10, a cross beam 11, a bottom plate 12, a left side plate 13, a right side plate 14, a middle isolation rib 15, a left flange 16, a right flange 17 and a middle flange 18.

Detailed Description

Referring to fig. 1 to 7, a cable trough main bearing T-beam composite sidewalk includes a bracket 1, a cable trough 2, a walking plate edge beam 3, a walking plate 4, and a guardrail circular tube 5. The support 1, the cable groove 2, the walking plate boundary beam 3, the walking plate 4, the guardrail round tube 5 and the like are all made of composite materials. The support comprises a T-beam connecting block 8, an upright post 9, a corner connecting piece 10 and a cross beam 11, wherein the lower end of the upright post is connected to the right end of the cross beam through the corner connecting piece; near top and the bottom of left end all are equipped with T roof beam connecting block on the crossbeam, are equipped with the through-hole that can supply the bolt to pass on the T roof beam connecting block for through the pre-buried metalwork on the bolted connection T roof beam. The stand is provided with round holes for the guardrail round tubes to pass through, generally and uniformly arranged about three, and the round holes are vertically arranged on the stand and are communicated front and back. The cable duct includes bottom plate 12, left side board 13 and right side board 14, middle isolation muscle 15, and both sides above the bottom plate are connected respectively to left side board and right side board, and middle isolation muscle is connected above the bottom plate and is located between left side board and the right side board. The top end of the left side plate is provided with a left flange 16 extending horizontally to the right, the top end of the right side plate is provided with a right flange 17 extending horizontally to the left, the top end of the middle isolation rib is provided with middle flanges 18 extending horizontally to both sides, and the left flange, the right flange and the middle flange are all provided with bolt holes for bolt bolts to pass through. The single cable trough is an integral structure formed by pultrusion in one piece.

The walking board integrated package includes walking board boundary beam and walking board, and walking board both sides all press from both sides tightly have the walking board boundary beam. When the integrated blocks of the walking boards are assembled, a single walking board is transversely placed, more than two (preferably three) walking boards are horizontally placed (positioned on the same plane) and sequentially connected front and back to form a rectangular unit board, two sides of the rectangular unit board are respectively clamped by two walking board boundary beams to form the integrated blocks of the walking boards, and the boundary beams of the walking boards and the walking boards are connected together through rivets.

When the cable trough main bearing T-beam composite material sidewalk is installed, firstly, a support is connected to the T-beam, and the support is connected with a pre-buried metal piece on the T-beam through four bolts; the guardrail round tube directly penetrates into the round hole on the bracket to be connected; then the cable groove is connected with the bracket through an expansion screw; and then the walking plate and the walking plate boundary beam form a walking plate integrated block, the walking plate integrated block is placed on the cable groove, and the whole walking plate integrated block is fixedly connected with the cable groove through a bolt 7. The installation method of the cable trough main bearing T-beam composite sidewalk specifically comprises the following steps:

the method comprises the following steps: installing a support: firstly assembling a bracket, then preliminarily connecting the bracket to the T beam by using bolts, and roughly adjusting the bracket; a plurality of brackets are sequentially arranged at intervals in front and back according to requirements;

step two: installing a guardrail round pipe: penetrating a guardrail round tube into a round hole on the bracket, and connecting the guardrail round tube with the bracket; screwing the bolt to completely fix the bracket;

step three: installing a cable trough: placing the cable grooves on the bracket, connecting the cable grooves with the bracket, and sequentially installing a plurality of cable grooves in a front-back connection manner according to requirements;

step four: assembling the walking board integrated block: assembling the walking plate and the walking plate boundary beam into a walking plate integrated block;

step five: installing the walking board integrated block: placing the walking board integrated block on the cable groove, and fixedly connecting the walking board integrated block with the cable groove; sequentially mounting a plurality of walking board integrated blocks in a front-back connection manner according to requirements;

step six: and (5) inspecting and trying to finish the installation of the cable trough main bearing T-beam composite sidewalk.

As an alternative: the cable trough and the bracket can be connected through expansion screws, bolts, rivets, embedded thread sleeves and the like; the side beam of the walking board and the walking board can be assembled integrally through rivets, or can be connected through expansion screws, bolts, glue joint and other modes; the walking plate and the cable groove can be connected through a bolt of a lock tongue, a bolt, a rivet, an expansion screw and the like; the number of the isolation ribs in the middle of the cable trough structure can be increased or decreased. The upright columns in the bracket can be spliced.

The existing T-beam sidewalk structure is a concrete and angle steel structure, the composite material T-beam sidewalk generally refers to the concrete angle steel structure, the cable trough is mainly placed on the upper edge or the outer edge of the upright post, and the cable trough is mainly used for placing cables. The invention overturns the traditional cable trough installation mode, the cable trough can be used for placing cables and pedestrian path plates, the bearing capacity is stronger, the functions are more, and a plurality of designed structures and structural connections are pioneered. The invention can solve the problems of non-corrosion resistance of metal and concrete sidewalks, inconvenient transportation, difficult construction and low construction efficiency, and replaces the traditional concrete angle steel sidewalk with a composite material; meanwhile, the problem that a cable trough in an existing composite material structure is generally suspended on the extension of a support or the upper edge of a support upright post is solved, the requirement on the mechanical property of the support is higher, and the installation process is increased.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (1)

1. A method for installing a cable trough main bearing T-beam composite sidewalk is characterized in that the cable trough main bearing T-beam composite sidewalk comprises a support connected to a T beam, a cable trough and a walking board integrated block, wherein the cable trough is placed on the support, and the walking board integrated block is laid on the cable trough; pre-buried metal pieces are pre-buried on the T beam, and the support is connected with the pre-buried metal pieces; the support comprises a T-beam connecting block, an upright post, a corner connecting piece and a cross beam, wherein the lower end of the upright post is connected to the right end of the cross beam through the corner connecting piece; the top and the bottom near the left end of the beam are both provided with T beam connecting blocks, and the T beam connecting blocks are provided with through holes for bolts to pass through; the walking plate integrated block comprises a walking plate boundary beam and a walking plate, the two sides of the walking plate are clamped with the walking plate boundary beam, and the walking plate boundary beam and the walking plate are connected in a rivet, expansion screw, bolt or gluing mode; the bracket, the cable groove, the side beam of the walking plate and the walking plate are all made of composite materials; the bracket is connected with the embedded metal piece through four bolts; the cable trough is connected with the bracket through an expansion screw, a bolt, a rivet or a pre-embedded threaded sleeve; the walking board integrated block is connected with the cable groove through a bolt of a lock tongue; the cable trough comprises a bottom plate, a left side plate, a right side plate and a middle isolation rib, wherein the left side plate and the right side plate are respectively connected to two sides of the upper surface of the bottom plate, and the middle isolation rib is arranged between the left side plate and the right side plate on the upper surface of the bottom plate; the top end of the left side plate is provided with a left flange extending horizontally to the right, the top end of the right side plate is provided with a right flange extending horizontally to the left, the top end of the middle isolation rib is provided with a middle flange extending horizontally to both sides, and the left flange, the right flange and the middle flange are respectively provided with a bolt hole for a bolt to pass through; the cable trough is an integral structure formed by integral pultrusion;

the installation comprises the following steps:

the method comprises the following steps: installing a support: connecting the support to the embedded metal piece of the T-shaped beam by using a bolt, and roughly adjusting the support;

step two: installing a guardrail round pipe: penetrating a guardrail round tube into a round hole on the bracket, and connecting the guardrail round tube with the bracket; screwing the bolt to completely fix the bracket;

step three: installing a cable trough: placing the cable groove on the support, and connecting the cable groove and the support through expansion screws, bolts, rivets or pre-embedded threaded sleeves;

step four: assembling the walking board integrated block: assembling the walking plate and the walking plate boundary beam into a walking plate integrated block; when assembling the walking board integrated block, a single walking board is transversely placed, more than two walking boards are horizontally placed and are sequentially connected into a cuboid unit board from front to back, then the two sides of the cuboid unit board are clamped by the walking board boundary beams to be connected into the walking board integrated block, and the walking board boundary beams and the walking boards are connected together in a rivet, expansion screw, bolt or gluing mode;

step five: installing the walking board integrated block: laying the walking board integrated block on a cable groove, and fixedly connecting the walking board integrated block with the cable groove through a bolt, a rivet or an expansion screw;

step six: and (5) inspecting and trying to finish the installation of the cable trough main bearing T-beam composite sidewalk.

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