CN110485258B - Full-assembly type steel structure approach bridge and construction method thereof - Google Patents
Full-assembly type steel structure approach bridge and construction method thereof Download PDFInfo
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- CN110485258B CN110485258B CN201910556233.2A CN201910556233A CN110485258B CN 110485258 B CN110485258 B CN 110485258B CN 201910556233 A CN201910556233 A CN 201910556233A CN 110485258 B CN110485258 B CN 110485258B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/24—Bridges or similar structures, based on land or on a fixed structure and designed to give access to ships or other floating structures
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
- E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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Abstract
The invention discloses a full-assembly type steel structure approach bridge, which comprises a pile foundation part, a pile cap sleeve part, a beam-pile cap connecting part, a steel beam part, a steel-concrete laminated panel part and an accessory facility part, wherein the pile foundation part is arranged on the pile cap sleeve part; all stressed parts of the full-assembly type steel structure approach bridge are standard steel members, the on-site splicing, mounting and construction of the members can be realized, and the assembly rate is close to 100%; the construction method greatly reduces the construction amount of the on-site concrete, has small weight of a single component, reduces the dependence degree of approach bridge construction on construction equipment, has high construction efficiency, and is suitable for quickly building various pile foundation approach bridges in areas with poor peripheral construction matching conditions; the invention has small self weight and low requirement on the bearing capacity of the pile foundation, and can reduce the engineering cost of the pile foundation; the main body stress structure can adopt a steel structure, the steel structure is light in weight, high in strength and small in earthquake inertia force, and the earthquake-resistant steel plate is very suitable for strong earthquake areas; the invention has low labor cost and greatly reduces the influence on the environment in the construction process.
Description
Technical Field
The invention relates to the technical field of port engineering, in particular to a fully assembled steel structure approach bridge and a construction method thereof.
Background
The offshore wharf is the most common arrangement form of the wharf on the ground, the wharf is arranged at a suitable water depth in the open sea and needs to be connected with a rear land area through an approach bridge, the approach bridge is an important component of a hydraulic structure of the wharf, and the investment is often large. The traditional approach bridge structure generally adopts an approach bridge structure type of 'pile foundation + cast-in-place concrete beam + prestressed or non-prestressed concrete beam'. The defects of the traditional approach bridge structure mainly comprise: (1) a large amount of cast-in-place concrete is needed, the maintenance difficulty is high, the construction efficiency is low, the construction period is long, and the erecting and dismantling work of the template with a lower water level is often involved; (2) the cast-in-place concrete has longer construction period, and in order to ensure the safety of the construction period, auxiliary measures such as pile clamping and the like are required to enhance the integrity of each pile foundation and ensure the safety of the construction period; (3) the self weight of the precast concrete beam is large, and large hoisting and transporting equipment is needed; (4) limited by concrete materials, the span of the concrete approach bridge is limited; (5) the traditional approach bridge structure has large field workload and high labor cost.
Disclosure of Invention
The invention aims to provide a full-assembly steel structure approach bridge and a construction method thereof, wherein the full-assembly steel structure approach bridge is composed of standardized basic components, the standardized components are transported to the site after being processed by a factory and assembled on the site, and only the assembly and connection work of steel structure components and a small amount of surface layer concrete pouring are carried out on the site, so that the overwater construction workload of concrete is greatly reduced, the labor cost is saved, the full-assembly steel structure approach bridge components are standardized, the construction and installation mechanization degree is high, and the construction efficiency is high; the pile foundations can be quickly connected into a whole through simple on-site assembly, so that the requirement on pile clamping is reduced; all components of the full-assembly steel structure approach bridge are light high-strength steel structural components, the dead weight is light, the requirement on the lifting capacity of construction equipment is low, the high-strength steel components are beneficial to realizing a large-span approach bridge, and the structure seismic performance is superior.
The technical solution for realizing the purpose of the invention is as follows:
a full-assembly type steel structure approach bridge is characterized by comprising a pile foundation part, a pile cap sleeve part, a beam-pile cap connecting part, a steel beam part, a steel-concrete laminated panel part and an accessory facility part; the pile foundation part is provided with a pile cap sleeve part which is fixedly connected with the steel beam part through a beam-pile cap connecting part, and the steel beam part is fixedly connected with the steel longitudinal beam part; and the steel beam part and the steel stringer part are provided with steel-concrete laminated panel parts, and the steel-concrete laminated panel parts are provided with accessory facility parts.
Preferably, the pile foundation part adopts a steel pipe pile foundation or a shaped concrete pipe pile foundation, and the steel pipe pile foundation or the shaped concrete pipe pile foundation is arranged by adopting full-straight piles.
Preferably, the pile cap sleeve part is externally inserted or internally inserted at the top of the pile foundation part, and the pile cap sleeve part is fixedly connected with the pile foundation part through grouting connection; the bottom end of the pile cap sleeve part is a circular steel sleeve, a reinforcing plate is arranged on the side wall of the pile cap sleeve part, the top end of the pile cap sleeve part is sealed by a steel plate, the top end of the pile cap sleeve part is fixedly connected with the steel plate through welding, and a reinforcing rib is arranged at the connecting position of the top end of the pile cap sleeve part and the steel plate.
Preferably, the beam-pile cap connection part comprises an upper steel plate and a cross transition plate; the upper steel plate is provided with bolt holes corresponding to the beam bottom bolt holes of the steel beam part and is fixedly connected with the steel beam part through bolts; the cross transition plate is fixedly connected with the top end of the pile cap sleeve part through welding; and a reinforced rib plate is arranged on the cross transition plate.
Preferably, the steel beam part adopts a box-shaped or I-shaped section beam, the steel beam part is connected with an overhanging longitudinal beam at the steel longitudinal beam part to lay a connecting node, and the connecting node is in an orthogonal shape; when the box-shaped section beam is adopted, a U-shaped placing groove is arranged on the connecting node, a bolt hole is arranged on the U-shaped placing groove and corresponds to the bolt hole of the steel longitudinal beam part, and the steel cross beam part is fixedly connected with the steel longitudinal beam part through a bolt; the manhole is arranged at the top of the steel beam part, and the transverse reinforced rib plate is arranged inside the steel beam part.
Preferably, the steel longitudinal beam part adopts a box-shaped or I-shaped section beam, bolt holes are arranged at two ends of the steel longitudinal beam part, and the bolt hole positions correspond to the bolt holes of the connecting nodes of the steel transverse beam part; when the box-shaped section beam is adopted, the external prestressed steel strand bundle is arranged on the inner side of the longitudinal beam, and the prestressed steel strand fixing piece is arranged on the inner web wall of the longitudinal beam.
Preferably, the steel-concrete laminated panel part comprises orthotropic steel panels and cast-in-place concrete surface layers, and the cast-in-place concrete surface layers are paved on the orthotropic steel panels; the bottom end of the orthotropic steel panel is fixedly connected with the top of the steel beam and the top of the steel longitudinal beam respectively through welding; and shear resistant parts are arranged at the top and the side of the steel-concrete laminated panel part.
Preferably, the accessory facility portion includes railing and expansion joint, and the railing sets up railing basis sleeve and welds in the steel panel top, and the expansion joint sets up in the cast in situ surface layer.
A construction method of a full-assembly type steel structure approach bridge is characterized by comprising the following steps:
(1) the method comprises the following steps of (1) customizing and processing a pile foundation part, a pile cap sleeve part, a beam-pile cap connecting part, a steel beam part, a steel longitudinal beam part, an orthotropic steel panel and an accessory facility part standardized steel member in a factory, performing coating anticorrosion treatment, and then transporting to a construction site;
(2) performing pile foundation part construction, and completing pile foundation pile sinking construction by adopting a pile driving ship, erecting a steel platform or adopting a self-walking pile driving platform;
(3) accurately measuring actual pile sinking deviation, and performing on-site connection of a steel beam part, a beam-pile cap connecting part and a pile cap sleeve part, wherein the beam-pile cap connecting part and the pile cap sleeve part are constructed in a connection manner by adopting a penetration fillet weld, and the quality grade of the weld is required to meet the requirement;
(4) integrally hoisting the steel beam part, the beam-pile cap connecting part and the pile cap sleeve part, installing the steel beam part, the beam-pile cap connecting part and the pile cap sleeve part on a pile foundation part, and realizing the fixed connection of the steel beam part, the beam-pile cap connecting part and the pile cap sleeve part with grouting;
(5) installing a steel longitudinal beam part, and tensioning the prestressed steel strand bundle after the steel longitudinal beam part and the steel transverse beam part are connected through a bolt;
(6) installing orthotropic steel panels, assembling the steel panels, and connecting the steel panels with the steel beam parts and the steel wale parts;
(7) laying surface layer steel bars, and installing a concrete surface layer and an accessory facility part;
(8) and pilot running the approach bridge and putting into production for use.
Compared with the prior art, the invention has the following remarkable advantages:
(1) all stressed parts of the full-assembly type steel structure approach bridge are standard steel members, the on-site splicing, mounting and construction of the members can be realized, and the assembly rate is close to 100%.
(2) The invention greatly reduces the construction amount of on-site concrete, has small weight of a single component, reduces the dependence degree of approach bridge construction on construction equipment, has high construction efficiency, and is suitable for quickly building various pile foundation approach bridges in areas with poor peripheral construction matching conditions.
(3) The invention has small structure dead weight and low requirement on the bearing capacity of the pile foundation, and can reduce the engineering cost of the pile foundation.
(4) The main body stress structure can adopt a steel structure, and the steel structure has light weight, high strength and small earthquake inertia force, and is very suitable for strong earthquake areas.
(5) The invention has low labor cost, only needs assembly and a small amount of cast-in-place concrete on a construction site, and can greatly reduce the influence on the environment in the construction process; with the situation that the requirements for safety and environmental protection are increasingly enhanced along with the rising of labor cost in the future building market, the fully-assembled steel approach bridge structure has the remarkable competitive advantages of high working efficiency, high quality, low cost, environmental friendliness and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the fully-assembled steel structure approach bridge of the present invention.
Fig. 2 is a top view of the fully assembled steel approach bridge of the present invention.
FIG. 3 is a schematic structural view of a pile cap sleeve barrel part in the fully-assembled steel structure approach bridge of the invention.
Fig. 4 is a schematic structural view of a steel beam portion in the fully-assembled steel structure approach bridge of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a fully assembled steel structure approach bridge includes a pile foundation portion 100, a pile cap sleeve portion 200, a beam-pile cap connecting portion 300, a steel beam portion 400, a steel stringer portion 500, a steel-concrete laminated panel portion 600, and an ancillary facility portion 700; the pile foundation part 100 is provided with a pile cap sleeve part 200, the pile cap sleeve part 200 is fixedly connected with a steel beam part 400 through a beam-pile cap connecting part 300, and the steel beam part 400 is fixedly connected with a steel longitudinal beam part 500; the steel beam portion 400 and the steel stringer portion 500 are provided with a steel-concrete laminated panel portion 600, and the steel-concrete laminated panel portion 600 is provided with an ancillary facility portion 700.
The pile foundation part 100 adopts a steel pipe pile foundation or a shaped concrete pipe pile foundation, and the steel pipe pile foundation or the shaped concrete pipe pile foundation is arranged by adopting full-straight piles.
As shown in fig. 3, the pile cap sleeve portion 200 is inserted or inserted externally to the top of the pile foundation portion 100, and the pile cap sleeve portion 200 is fixedly connected to the pile foundation portion 100 by grouting connection; the bottom end of the pile cap sleeve part 200 is a circular steel sleeve, the side wall of the pile cap sleeve part 200 is provided with a reinforcing plate, the top end of the pile cap sleeve part 200 is sealed by a steel plate, the top end of the pile cap sleeve part 200 is fixedly connected with the steel plate through welding, and a reinforcing rib is arranged at the connection position of the top end of the pile cap sleeve part 200 and the steel plate.
As shown in fig. 3, the beam-pile cap connection 300 includes an upper steel plate (3001) and a cross transition plate 3002; the upper steel plate 3001 is provided with bolt holes corresponding to the beam bottom bolt holes of the steel beam portion 400, and the upper steel plate 3001 is fixedly connected with the steel beam portion 400 through bolts; the cross transition plate 3002 is fixedly connected with the top end of the pile cap sleeve part 200 through welding; a reinforcement rib plate 3003 is arranged on the cross transition plate 3002.
As shown in fig. 4, the steel beam part 400 is a box-shaped or i-shaped section beam, and the connection joints of the steel beam part 400 and the steel longitudinal beam part 500 are extended outwards and placed in an orthogonal manner; when the box-shaped section beam is adopted, a U-shaped laying groove 4001 is arranged on the connecting node, bolt holes are formed in the U-shaped laying groove 4001 and correspond to the bolt holes of the steel longitudinal beam part 500, and the steel cross beam part 400 is fixedly connected with the steel longitudinal beam part 500 through bolts; manhole 4002 is provided with at steel beam portion 400 top, and steel beam portion 400 is inside to be provided with horizontal reinforcement floor 4003.
The steel longitudinal beam part 500 is a box-shaped or I-shaped section beam, bolt holes are formed in two ends of the steel longitudinal beam part 500, and bolt hole positions correspond to bolt holes of connecting nodes of the steel cross beam part; when a box-shaped section beam is adopted, an external prestress steel strand 5001 is arranged on the inner side of the longitudinal beam, and a prestress steel strand fixing piece is arranged on the inner web wall of the longitudinal beam.
The steel-concrete laminated panel part 600 comprises an orthotropic steel panel 6001 and a cast-in-place concrete surface layer 6002, wherein the cast-in-place concrete surface layer 6002 is laid on the orthotropic steel panel 6001; the bottom end of the orthotropic steel panel 6001 is fixedly connected with the top of the steel beam and the top of the steel longitudinal beam respectively through welding; shear resistant members 6003 are provided on the top and the side of the steel-concrete laminated panel 600.
Affiliated facilities portion 700 includes railing 7001 and expansion joint, and railing 7001 sets up railing basis sleeve and welds in the steel panel top, and the expansion joint sets up in the cast in situ surface layer.
A construction method of a full-assembly type steel structure approach bridge is characterized by comprising the following steps:
(1) the method comprises the following steps of (1) customizing and processing a pile foundation part 100, a pile cap sleeve part 200, a beam-pile cap connecting part 300, a steel beam part 400, a steel beam part 500, an orthotropic steel panel 6001 and an accessory facility part 700 standardized steel member in a factory, performing coating anti-corrosion treatment, and then transporting to a construction site;
(2) constructing a pile foundation part 100, and completing pile sinking construction of the pile foundation by adopting a pile driving ship, erecting a steel platform or adopting a self-walking pile driving platform;
(3) accurately measuring actual pile sinking deviation, and performing on-site connection of the steel beam part 400, the beam-pile cap connecting part 300 and the pile cap sleeve part 200, wherein the beam-pile cap connecting part 300 and the pile cap sleeve part 200 are constructed in a connection manner by adopting a penetration fillet weld, and the quality grade of the weld is required to meet the requirement;
(4) integrally hoisting the steel beam part 400, the beam-pile cap connecting part 300 and the pile cap sleeve part 200, installing the steel beam part on the pile foundation part 100, and realizing the fixed connection with a pile foundation by grouting;
(5) installing the steel longitudinal beam part 500, and tensioning the prestressed steel strand beam 5001 after the steel longitudinal beam part 500 and the steel transverse beam part 400 are connected through bolts;
(6) installing orthotropic steel panels 6001, assembling the steel panels, and connecting the steel panels with the steel beam part 400 and the steel longitudinal beam part 500;
(7) paving surface layer steel bars, and installing a concrete surface layer 6002 and an accessory facility part 700;
(8) and pilot running the approach bridge and putting into production for use.
Example 1:
in the embodiment, taking a wharf approach bridge as an example, the approach bridge has a width of 10m and an approach bridge bent frame spacing of 25m, as shown in fig. 1-4, the fully-assembled steel structure approach bridge of the present invention includes a pile foundation portion 100, a pile cap sleeve portion 200, a beam-pile cap connecting portion 300, a steel beam portion 400, a steel beam portion 500, a steel-concrete laminated panel portion 600, and an ancillary facility portion 700; the pile foundation part 100 is provided with a pile cap sleeve part 200, the pile cap sleeve part 200 is fixedly connected with a steel beam part 400 through a beam-pile cap connecting part 300, and the steel beam part 400 is fixedly connected with a steel longitudinal beam part 500; the steel beam portion 400 and the steel stringer portion 500 are provided with a steel-concrete laminated panel portion 600, and the steel-concrete laminated panel portion 600 is provided with an ancillary facility portion 700.
The pile foundation part 100 adopts steel pipe piles with the diameter of 1000mm, and 3 piles are arranged in each bridge approach bent frame and are all straight piles.
The inner diameter of the pile cap sleeve part 200 is 1200mm, the pile cap sleeve part is in solid-phase connection with a pile foundation part through a high-pressure grouting material 2001, a grouting guide pipe 2003 is arranged on the outer side of the sleeve, a grouting sealing rubber block 2004 is arranged at the bottom of the sleeve, the top end of the pile cap sleeve part 200 is sealed by a steel plate, and the steel plate 2002 at the top of the sleeve plays a role in pile cap excessive connection.
The beam-pile cap connecting part 300 comprises an upper steel plate 3001, a cross transition plate 3002 and a stiffening rib plate 3003, wherein bolt holes are arranged on the upper steel plate, correspond to the bolt holes at the bottom of the steel beam part 400, and are connected with the steel beam by using bolts in a solid phase manner; the cross transition plate is connected with the sleeve top steel plate 2002 by welding, and the relative position of the cross transition plate is determined according to the measured pile position.
The steel beam part 400 is a box-shaped cross-section beam, a longitudinal beam laying connection node is extended out of a position where the cross beam is connected with the longitudinal beam, a U-shaped laying groove 4001 is arranged, a manhole 4002 is arranged at the top of the beam, and operations such as bolt fastening operation, prestressed beam tensioning, later maintenance and overhaul and the like are performed by utilizing the manhole and the inner space of the box beam; in order to meet the requirement of stable section, a transverse reinforced rib plate 4003 is arranged in the beam.
The steel longitudinal beam part 500 is a box-shaped section beam, and bolt holes are arranged at the beam end and correspond to the bolt holes of the U-shaped shelving groove 4001; after being connected with a steel beam by a bolt in a solid phase mode, an external prestress steel strand 5001 is arranged, the steel strand is anchored at the top of the steel beam, and in order to meet the requirement of section stability, a transverse reinforced rib plate 5002 is arranged in the beam.
The steel-concrete laminated panel part 600 and the orthotropic panel 6001 are standardized steel members and are assembled on site, the bottom of the steel-concrete laminated panel part is welded with the tops of steel beams and steel longitudinal beams, shear-resistant members 6003 are arranged on the top and the sides of the beams, and the upper cast-in-place concrete surface layer 6002 is connected into a whole.
Affiliated facilities 700, including railing 7001 and expansion joint, the railing sets up railing basis sleeve and welds in the steel panel top, and the expansion joint sets up in the cast in situ surface layer.
A construction method of a full-assembly type steel structure approach bridge comprises the following steps:
(1) standardized steel components such as a pile foundation part 100, a pile cap sleeve part 200, a beam-pile cap connecting part 300, a steel beam part 400, a steel beam part 500, an orthotropic steel panel 6001, an accessory facility part 700 and the like are customized and processed in a factory, are subjected to coating anticorrosion treatment, and are transported to a construction site;
(2) pile foundation construction, adopting a pile driving boat, erecting a steel platform or adopting a self-walking pile driving platform to finish pile foundation pile sinking construction;
(3) accurately measuring the actual pile sinking deviation, and performing on-site connection of a steel beam part 400, a beam-pile cap connecting part 300 and a pile cap sleeve part 200, wherein the beam-pile cap connecting part and the pile cap sleeve part are constructed in a connection mode by adopting a penetration fillet weld, and the quality grade of the weld is one grade;
(4) integrally hoisting the steel beam part 400, the beam-pile cap connecting part 300 and the pile cap sleeve part 200, installing the steel beam part on the pile foundation part 100, and realizing the fixed connection with a pile foundation by grouting;
(5) installing a steel longitudinal beam 500, and tensioning a prestressed steel strand beam 5001 after the longitudinal beam 500 is connected with the steel cross beam 400 through bolts;
(6) installing orthotropic steel panels 6001, assembling the steel panels, and welding the connection of the steel panels with the top of the longitudinal beams 500 and the top of the cross beams 400 on site;
(7) paving surface layer steel bars, and pouring surface layer concrete 6002 and installing the accessory facility part 700;
(8) and pilot running the approach bridge and putting into production for use.
In conclusion, all stressed parts of the full-assembly type steel structure approach bridge are standard steel members, the on-site splicing installation construction of the members can be realized, and the assembly rate is close to 100%. The invention greatly reduces the construction amount of on-site concrete, has small weight of a single component, reduces the dependence degree of approach bridge construction on construction equipment, has high construction efficiency, and is suitable for quickly building various pile foundation approach bridges in areas with poor peripheral construction matching conditions. The invention has small structure dead weight and low requirement on the bearing capacity of the pile foundation, and can reduce the engineering cost of the pile foundation. The main body stress structure can adopt a steel structure, and the steel structure has light weight, high strength and small earthquake inertia force, and is very suitable for strong earthquake areas. The invention has low labor cost, only needs assembly and a small amount of cast-in-place concrete on a construction site, and can greatly reduce the influence on the environment in the construction process; with the situation that the requirements for safety and environmental protection are increasingly enhanced along with the rising of labor cost in the future building market, the fully-assembled steel approach bridge structure has the remarkable competitive advantages of high working efficiency, high quality, low cost, environmental friendliness and the like.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A full-assembly type steel structure approach bridge is characterized by comprising a pile foundation part (100), a pile cap sleeve part (200), a beam-pile cap connecting part (300), a steel beam part (400), a steel beam part (500), a steel-concrete laminated panel part (600) and an accessory facility part (700); the pile foundation part (100) is provided with a pile cap sleeve part (200), the pile cap sleeve part (200) is fixedly connected with a steel beam part (400) through a beam-pile cap connecting part (300), and the steel beam part (400) is fixedly connected with a steel longitudinal beam part (500); a steel-concrete laminated panel part (600) is arranged on the steel beam part (400) and the steel beam part (500), and an accessory facility part (700) is arranged on the steel-concrete laminated panel part (600); the pile cap sleeve part (200) is externally inserted or inserted into the top of the pile foundation part (100), and the pile cap sleeve part (200) is fixedly connected with the pile foundation part (100) through grouting connection; the bottom end of the pile cap sleeve part (200) is a circular steel sleeve, a stiffened plate is arranged on the side wall of the pile cap sleeve part (200), the top end of the pile cap sleeve part (200) is sealed by a steel plate, the top end of the pile cap sleeve part (200) is fixedly connected with the steel plate through welding, and a stiffened rib is arranged at the connection part of the top end of the pile cap sleeve part (200) and the steel plate; the beam-pile cap connection part (300) comprises an upper steel plate (3001) and a cross transition plate (3002); the upper steel plate (3001) is provided with bolt holes corresponding to the beam bottom bolt holes of the steel beam part (400), and the upper steel plate (3001) is fixedly connected with the steel beam part (400) through bolts; the cross transition plate (3002) is fixedly connected with the top end of the pile cap sleeve part (200) through welding; and a reinforced rib plate (3003) is arranged on the cross transition plate (3002).
2. The full-assembly steel structure approach bridge of claim 1, wherein the pile foundation part (100) adopts a steel pipe pile foundation or a shaped concrete pipe pile foundation, and the steel pipe pile foundation or the shaped concrete pipe pile foundation adopts a full-vertical pile arrangement.
3. The full-assembly type steel structure approach bridge of claim 1, wherein the steel beam part (400) is a box-shaped or I-shaped section beam, and the overhanging longitudinal beam laying connection node is arranged at the position where the steel beam part (400) is connected with the steel longitudinal beam part (500) and is in an orthogonal shape; when the box-shaped section beam is adopted, a U-shaped placing groove (4001) is arranged on the connecting node, bolt holes are formed in the U-shaped placing groove (4001) and correspond to the bolt holes of the steel longitudinal beam part (500), and the steel transverse beam part (400) is fixedly connected with the steel longitudinal beam part (500) through bolts; the top of the steel beam part (400) is provided with a manhole (4002), and a transverse reinforced rib plate (4003) is arranged inside the steel beam part (400).
4. The full-assembly type steel structure approach bridge of claim 1, wherein the steel longitudinal beam part (500) is a box-shaped or I-shaped section beam, bolt holes are formed in two ends of the steel longitudinal beam part (500), and the bolt hole positions correspond to the positions of the bolt holes of the connecting nodes of the steel transverse beam part; when the box-shaped section beam is adopted, an external prestressed steel strand bundle (5001) is arranged on the inner side of the longitudinal beam, and a prestressed steel strand fixing piece is arranged on the web wall in the longitudinal beam.
5. The bridge approach of claim 1, wherein the steel-concrete laminated panel (600) comprises orthotropic steel panels (6001) and cast-in-place concrete panels (6002), and the cast-in-place concrete panels (6002) are laid on the orthotropic steel panels (6001); the bottom end of the orthotropic steel panel (6001) is fixedly connected with the top of the steel beam and the top of the steel longitudinal beam respectively through welding; shear resistant pieces (6003) are arranged on the top and the side of the steel-concrete laminated panel part (600).
6. The full assembly type steel structure approach bridge of claim 1, wherein the auxiliary facility part (700) comprises a railing (7001) and an expansion joint, the railing (7001) is provided with a railing base sleeve welded on the top of the steel panel, and the expansion joint is arranged in a cast-in-place surface layer.
7. The construction method of the full-assembly type steel structure approach bridge according to claim 1, characterized by comprising the following steps:
(1) the method comprises the following steps that a pile foundation part (100), a pile cap sleeve part (200), a beam-pile cap connecting part (300), a steel beam part (400), a steel beam part (500), an orthotropic steel panel (6001) and an accessory facility part (700) standardized steel member are customized and processed in a factory, and are subjected to coating anti-corrosion treatment and then transported to a construction site;
(2) constructing a pile foundation part (100), and completing pile sinking construction of the pile foundation by adopting a pile driving ship, erecting a steel platform or adopting a self-walking pile driving platform;
(3) accurately measuring actual pile sinking deviation, and performing on-site connection of a steel beam part (400), a beam-pile cap connecting part (300) and a pile cap sleeve part (200), wherein the beam-pile cap connecting part (300) and the pile cap sleeve part (200) are constructed in a connection manner, a penetration fillet weld is adopted, and the quality grade of the weld is required to meet the requirement;
(4) integrally hoisting the steel beam part (400), the beam-pile cap connecting part (300) and the pile cap sleeve part (200), installing the steel beam part, the beam-pile cap connecting part and the pile cap sleeve part on a pile foundation part (100), and realizing the fixed connection of the steel beam part, the beam-pile cap connecting part and a pile foundation by grouting;
(5) installing a steel longitudinal beam part (500), and tensioning a prestressed steel strand bundle (5001) after the steel longitudinal beam part (500) is connected with the steel transverse beam part (400) through a bolt;
(6) installing orthotropic steel panels (6001), splicing the steel panels, and connecting the steel panels with the steel beam parts (400) and the steel beam parts (500);
(7) paving surface layer steel bars, and installing a concrete surface layer (6002) and an accessory facility part (700);
(8) and pilot running the approach bridge and putting into production for use.
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| CN112962471A (en) * | 2021-03-30 | 2021-06-15 | 中建三局基础设施建设投资有限公司 | Assembled horizontal limiting sand box supporting device and construction method thereof |
| CN113481930A (en) * | 2021-07-07 | 2021-10-08 | 中交第三航务工程勘察设计院有限公司 | Installation type high-pile wharf structure and construction method |
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| JP4484100B2 (en) * | 2003-11-17 | 2010-06-16 | 五洋建設株式会社 | Installation method of steel pipe sheet pile assembly for well formation |
| JP4286737B2 (en) * | 2004-07-12 | 2009-07-01 | 株式会社竹中土木 | Construction method of pier |
| CN102425088B (en) * | 2011-09-14 | 2014-07-16 | 孙亮 | Elevated multilayer stereo steel structure traffic bridge |
| CN103015364A (en) * | 2012-12-18 | 2013-04-03 | 刘张雄 | Fully-assembled steel-structure wading basic platform |
| CN103321237B (en) * | 2013-06-04 | 2016-05-25 | 中交第二航务工程勘察设计院有限公司 | A kind of pile tube combining structure and for the method for construction of Wharf Engineering |
| CN104480850A (en) * | 2014-11-20 | 2015-04-01 | 富阳新鼎机械有限公司 | Non-foundation steel-structure express overpass |
| CN205856949U (en) * | 2016-08-05 | 2017-01-04 | 曹文龙 | A kind of modularity steel structure viaduct |
| CN206706804U (en) * | 2017-03-21 | 2017-12-05 | 沈阳建筑大学 | A kind of bridge pier column structure |
| CN107012828B (en) * | 2017-05-16 | 2019-06-07 | 中交上海三航科学研究院有限公司 | Full assembled dock structure and its installation method |
| CN107034842A (en) * | 2017-06-09 | 2017-08-11 | 中交第三航务工程勘察设计院有限公司 | A kind of modular assembly formula pile foundation wharfs structural system and its construction method |
| CN107858993A (en) * | 2017-10-16 | 2018-03-30 | 中交第三航务工程局有限公司 | A kind of prefabrication and assembly construction component and its assembly method for long piled wharf |
| CN207739128U (en) * | 2018-01-18 | 2018-08-17 | 刘计武 | Removable support equipment for road construction |
| CN108252170B (en) * | 2018-03-26 | 2024-03-22 | 中国人民解放军陆军军事交通学院 | Level crossing bridge applied to level crossing at road center |
| CN108221527B (en) * | 2018-03-26 | 2024-03-22 | 中国人民解放军陆军军事交通学院 | Level crossing bridge applied to left-turning road in road center |
| CN108797513A (en) * | 2018-06-12 | 2018-11-13 | 中交第三航务工程勘察设计院有限公司 | A kind of normalized assembled pile foundation wharfs structure and its method of construction |
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