CN-116104013-B - Shock-absorbing steel structure bridge construction method

CN116104013BCN 116104013 BCN116104013 BCN 116104013BCN-116104013-B

Abstract

The application relates to the technical field of steel structure bridges, in particular to a damping steel structure bridge construction method. The construction method comprises the following steps of S1, construction of a superposed beam, S2, construction of an earthquake-resistant structure, S2.1, S2.2, S3, construction of a main structure, S3.1, S3.2, S4 and construction of a deformation joint. The construction method is suitable for stress conditions and specific structures of different construction sections, and the lower parts of the different construction sections are provided with the corresponding foundation structures, so that the method has the effect of reducing the influence of subway passing on the upper steel structure bridge.

Inventors

WANG XIANGBAO
ZHANG ZHONGWEI
SONG YUHAI
DU ZHANGYONG
YANG ZHANJUN
XU CHUANLIANG
Sun Zibin
ZHANG ZEJIA
SHI MINGXING
ZHAO ZHE
MA ZHAO
FENG LIN
LI BAOSHAN
YIN HAOHAO
WANG GANG
DONG GAO
LI LU
ZHANG JIJUN
QU CHENG
ZHAO WENMING
Han Cunjin
LI WEIXING
WANG ZHENYU
ZHENG XIAOYING
Dong Qinfen
JIA TINGTING
LI YUE
LIU HONGZHI
WANG HONGLING
MAO GANG
HE XIANSHENG
WANG YUJI
WANG JIHE
XU XIAOHUANG
LIU HUIQING

Assignees

北京国际建设集团有限公司

Dates

Publication Date: 20260505
Application Date: 20230129

Claims (9)

1. The construction method of the shock-absorbing steel structure bridge is characterized by comprising the following steps of: S1, constructing a superposed beam (1), namely planting steel bars of a lower foundation superposed beam (1), binding structural steel bars of the superposed beam (1), respectively positioning and paying off to determine pile position connection points of lower foundations of a first construction section (21) and a second construction section (22) and a subway structure, embedding a plurality of large-diameter bolts (23) at the determined pile position connection points, binding and fixing the large-diameter bolts with the structural steel bars of the superposed beam (1), and arranging cross-shaped shear steel plates (24) on the upper sides of the large-diameter bolts (23) at each pile position connection point; S2, construction of an anti-seismic structure: s2.1, the first construction section (21) is subjected to earthquake-resistant structure construction, wherein the first construction section (21) is divided into a section a and a section b according to structural functions; during construction of the section a, two-way anti-pulling supports (3) are arranged on the cross anti-shearing steel plates (24) of the lower foundation at the section a, and during construction of the section b, spherical hinge supports (4) are arranged on the cross anti-shearing steel plates (24) of the lower foundation at the section b; s2.2, the earthquake-resistant structure construction of a second construction section (22) is carried out, wherein spherical hinge supports (4) are arranged on cross shear steel plates (24) of the lower foundation at the higher end of the second construction section (22), and anti-slip supports (5) are arranged on cross shear steel plates (24) of the lower foundation at the lower end of the second construction section (22); S3, constructing a template, pouring concrete, and after the concrete reaches the design strength: s3.1, the construction of a main structure of the first construction section (21) comprises the steps of hoisting a steel structure column (25), connecting the lower end of the steel structure column (25) with a corresponding bidirectional anti-pulling support (3) or spherical hinge support (4), and hoisting a main steel structure beam (26) at the upper end of the steel structure column (25); S3.2, the construction of a main structure of the second construction section (22) comprises the steps of hoisting a main steel structure frame (28), connecting the higher end of the main steel structure frame (28) with a spherical hinge support (4), connecting the lower end of the main steel structure frame (28) with an anti-slip support (5), and arranging a support truss rod in the main steel structure frame (28); S4, deformation joint construction, wherein deformation joints are arranged at the joints of the first construction section (21) and the second construction section (22) and the subway large warehouse, and the width of the deformation joints is 100 mm-300 mm.
2. The method for constructing the shock-absorbing steel structure bridge according to claim 1, wherein in the step S3, concrete is poured below the cross shear steel plate (24) for the first time, after the concrete strength of the height portion of the large-diameter bolt (23) is ensured to reach the design strength, the steel structure column (25) and the main steel structure frame (28) are respectively hoisted and fixed, and secondary concrete pouring is performed until the cross shear steel plate (24) is completely covered.
3. The construction method of the shock absorption steel structure bridge according to claim 1 is characterized in that in the step S3, after the second concrete pouring reaches the design strength, backfilling is carried out below the section a laminated beam (1) until the distance from the lower side surface of the laminated beam (1) is 100-200 mm.
4. The method for constructing the shock-absorbing steel structure bridge according to claim 1, wherein the lower side face of the cross shear steel plate (24) is fixedly connected with structural steel bars of the superposed beam (1), and a plurality of large-diameter bolts (23) penetrate through four corner gaps of the cross shear steel plate (24).
5. The method for constructing the shock-absorbing steel structure bridge according to claim 4, wherein the bidirectional anti-pulling support (3) comprises a lower fixing plate (31), an upper fixing plate (32), a plurality of viscous dampers (33) and a plurality of anti-pulling spring mechanisms (34), the lower fixing plate (31) is horizontally arranged on the lower side of the upper fixing plate (32), the upper fixing plate (32) is parallel to the lower fixing plate (31), the lower fixing plate (31) is arranged on the cross shear steel plate (24), and a plurality of large-diameter bolts (23) penetrate through the lower fixing plate (31) towards one end of the cross shear steel plate (24); One end of each of the viscous dampers (33) is connected with the lower fixing plate (31), the other end of each of the viscous dampers (33) is connected with the upper fixing plate (32), one end of each of the anti-pulling spring mechanisms (34) is connected with the lower fixing plate (31), and the other end of each of the anti-pulling spring mechanisms (34) is connected with the upper fixing plate (32); The viscous dampers (33) and the anti-pulling spring mechanisms (34) are respectively arranged between the lower fixing plate (31) and the upper fixing plate (32) at intervals circumferentially.
6. The method for constructing the shock-absorbing steel structure bridge according to claim 5, wherein the viscous dampers (33) are obliquely arranged, and the inclination angle of the viscous dampers (33) is 10-30 degrees.
7. The method for constructing the shock-absorbing steel structure bridge according to claim 5, wherein the anti-pulling spring mechanism (34) comprises a first sleeve (341), an upper sealing plate (342) and a lower sealing plate (343) are arranged in the first sleeve (341) at intervals, and an elastic piece (344) is arranged between the upper sealing plate (342) and the lower sealing plate (343); Ports at two ends of the first sleeve (341) are respectively provided with an upper isolation plate (345) and a lower isolation plate (346); An upper connecting rod (347) is arranged on one side surface of the upper sealing plate (342) far away from the lower sealing plate (343), and one end of the upper connecting rod (347) far away from the upper sealing plate (342) slides through the upper separation plate (345) to be connected with the upper fixing plate (32); a lower connecting rod (348) is arranged on one side surface, far away from the upper sealing plate (342), of the lower sealing plate (343), and one end, far away from the lower sealing plate (343), of the lower connecting rod (348) slides through the lower isolation plate (346) to be connected with the lower fixing plate (31).
8. The method for constructing the shock-absorbing steel structure bridge according to claim 7, wherein a first cavity (35) is formed between the upper sealing plate (342) and the upper isolation plate (345), a second cavity (36) is formed between the upper sealing plate (342) and the lower sealing plate (343), a third cavity (37) is formed between the lower sealing plate (343) and the lower isolation plate (346), damping medium (38) is poured into the second cavity (36), and a plurality of connecting holes (3421) are formed in the upper sealing plate (342) and the lower sealing plate (343).
9. The method for constructing the shock-absorbing steel structure bridge according to claim 8, wherein a second sleeve (39) is sleeved on the outer side of the bidirectional anti-pulling support (3), a limiting ring (391) is arranged at a port of the upper end of the second sleeve (39), and an abutting plate (392) is arranged at a port of the lower end of the second sleeve (39).

Description

Shock-absorbing steel structure bridge construction method Technical Field The application relates to the technical field of steel structure bridges, in particular to a damping steel structure bridge construction method. Background At present, with the increasing decrease of urban land resources, the comprehensive utilization of land and the improvement of the utilization efficiency of land become the important concern of urban constructors. The subway vehicle section utilizes the upper space of the subway to develop properties due to larger occupied area, and combines planning and development into residential and public building facilities, so that the upper space of the subway can be fully developed to have commercial utilization value. In order to distinguish the steel structure bridges from different subway throat areas to the top surface of a large warehouse, the steel structure bridges 2 are divided into a first construction section 21 and a second construction section 22. The first construction section 21 is used for connecting the first throat area with the top surface of the big warehouse, the upper part of the first construction section 21 is used as a pedestrian overpass, the lower part of the first construction section 21 is used as a municipal road foundation, and the second construction section 22 is used for connecting the second throat area with the top surface of the big warehouse, and the second throat area has a larger height difference with the top surface of the big warehouse. However, when the subway passes, larger vibration can be generated, the vibration can be transmitted to the steel structure bridge at the upper part, so that the steel structure bridge can vibrate, uncomfortable feeling can be caused to resident passing on one hand, and potential safety hazards can be caused even to the steel structure bridge on the other hand. Disclosure of Invention The application provides a construction method of a shock-absorbing steel structure bridge in order to reduce the influence of subway passing on the upper steel structure bridge. The application provides a shock absorption steel structure bridge construction method which adopts the following technical scheme: a construction method of a shock-absorbing steel structure bridge comprises the following steps: S1, constructing a superposed beam, namely planting lower foundation superposed beam steel bars, binding superposed beam structural steel bars, respectively positioning and paying off to determine pile position connection points of lower foundations of a first construction section and a second construction section and a subway structure, embedding a plurality of large-diameter bolts at the determined pile position connection points, binding and fixing the large-diameter bolts with superposed beam structural steel bars, and arranging cross shear-resistant steel plates on the upper sides of the large-diameter bolts at each pile position connection point; S2, construction of an anti-seismic structure: S2.1, the earthquake-resistant structure construction of a first construction section comprises a section a and a section b according to the structural function, wherein during the construction of the section a, two-way anti-pulling supports are arranged on cross shear steel plates of a lower foundation at the section a, and during the construction of the section b, spherical hinge supports are arranged on cross shear steel plates of a lower foundation at the section b; S2.2, the earthquake-resistant structure construction of a second construction section, wherein spherical hinge supports are arranged on cross shear steel plates of the lower foundation at the higher end of the second construction section; s3, constructing a main structure, namely building a template, pouring concrete, after the concrete reaches the design strength, S3.1, constructing a main body structure of a first construction section, namely hoisting a steel structure column, connecting the lower end of the steel structure column with a corresponding bidirectional anti-pulling support or spherical hinge support, and hoisting a main body steel structure beam at the upper end of the steel structure column; s3.2, constructing a main body structure of a second construction section, namely hoisting a main body steel structure frame, wherein the higher end of the main body steel structure frame is connected with a spherical hinge support, the lower end of the main body steel structure frame is connected with an anti-slip support, and a support truss rod piece is arranged inside the main body steel structure frame; S4, deformation joint construction, namely setting deformation joints at the joints of the first construction section and the second construction section and the subway large warehouse, wherein the width of the deformation joints is 100-300 mm. In the construction of the upper covered house engineering of the subway, in order to reduce the influence of subway passin