CN-121976462-A - Bridge tower structure and construction method

CN121976462ACN 121976462 ACN121976462 ACN 121976462ACN-121976462-A

Abstract

The invention discloses a bridge tower structure and a construction method, and relates to the technical field of bridges. The bridge tower structure comprises a tower column and a cross beam, wherein the cross beam is fixed between the upper parts of the tower columns at two sides, the cross beam comprises a solid part and a hollow part, the hollow parts are respectively arranged at two ends of the solid part, the solid part is respectively connected with the tower columns at two sides through the hollow parts at two ends, the height of the cross beam is gradually increased from the middle solid part to the hollow parts at two ends, and the width of the cross beam is gradually increased from the middle solid part to the hollow parts at two ends.

Inventors

WAN ZHIYONG
LI LIN
GAO QIANG
ZHU JINHONG
XIE PU
ZHU QING
Liang Quanzhang
LAN NAN
GUO WENHUA
WU XIAOHUI
CHEN ZHIXIANG
JIANG QIJUN

Assignees

广东省九域工程技术咨询有限公司
广东省交通规划设计研究院集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260309

Claims (10)

1. The bridge tower structure comprises a tower column (1) and a cross beam (2), wherein the cross beam (2) is fixed between the upper parts of the tower column (1) at two sides, the bridge tower structure is characterized in that the cross beam (2) comprises a solid part (201) and a hollow part (202), the hollow parts (202) are respectively arranged at two ends of the solid part (201), the solid part (201) is respectively connected with the tower column (1) at two sides through the hollow parts (202) at two ends, the beam height of the cross beam (2) is gradually increased from the middle solid part (201) to the hollow parts (202) at two ends, and the width of the cross beam (2) is gradually increased from the middle solid part (201) to the hollow parts (202) at two ends.
2. The bridge tower structure according to claim 1, wherein at least one side of the upper and lower sides of the cross beam (2) is in a gradual change structure, so that the beam height of the cross beam (2) gradually increases from the middle solid portion (201) to the hollow portions (202) at two ends, and at least one side of the front and rear sides of the cross beam is in a gradual change structure, so that the width of the cross beam (2) gradually increases from the middle solid portion (201) to the hollow portions (202) at two ends.
3. The pylon structure according to claim 2, wherein the gradual change of the upper, lower, front and/or rear sides of the cross beam (2) is of arc, inclined straight line or step.
4. A pylon structure according to claim 3, wherein the cross beams (2) are of an arcuate progression on both the upper and lower sides and the front and rear sides.
5. The pylon structure of claim 4 wherein the arcuate convexity of the arcuate gradation structure on the underside of the cross beam (2) faces the interior of the cross beam (2), the arcuate convexity of the arcuate gradation structure on the upper side of the cross beam (2) faces the exterior of the cross beam (2), and the arcuate convexities of the arcuate gradation structures on the front and rear sides of the cross beam (2) face the interior of the cross beam (2).
6. The bridge tower structure according to claim 1, wherein a plurality of transverse plates (2021) are distributed in sequence from top to bottom in the hollow portion (202), and the transverse plates (2021) of the uppermost layer and the lowermost layer are respectively matched with the upper side and the lower side of the cross beam (2).
7. The pylon structure of claim 6 wherein the thickness of the transverse plates (2021) in the middle of the hollow portion (202) is greater than the thickness of the transverse plates (2021) on the upper and lower sides of the hollow portion (202).
8. The bridge tower structure according to claim 1, wherein the lower parts of the tower columns (1) at two sides are symmetrically provided with corbels (3), the longitudinal section of Niu Tuibu (3) is gradually reduced towards the side far away from the tower columns (1), the side of Niu Tuibu (3) far away from the tower columns (1) is of a solid structure, the side of Niu Tuibu (3) close to the tower columns (1) is of a hollow structure, and a plurality of transverse supporting parts are sequentially distributed inside the hollow side of Niu Tuibu (3) from top to bottom.
9. A method of constructing a pylon structure as claimed in any one of claims 1 to 8, comprising the steps of: Dividing the tower column (1) into an upper tower column body (101), a middle tower column body (102) and a lower tower column body (103), and completing construction of a bridge tower foundation, the lower tower column body (103) and the middle tower column body (102) according to a construction flow; Constructing a steel-concrete combination section on the top surface of the middle tower column body (102), wherein the steel-concrete combination section is formed by combining a steel shell structure welded with shear nails with internal concrete; Installing an outer template, an inner template and a tower inner steel anchor box of the cross beam (2), hoisting the prefabricated upper tower column body (101) and the inner and outer steel templates and the tower inner steel anchor box of the cross beam (2) to corresponding positions, and welding the prefabricated upper tower column body and the inner and outer steel templates and the tower inner steel anchor box with the steel mixing section into a whole; binding the steel bars of the upper tower column body (101) and the cross beam (2), and uniformly pouring concrete between the upper tower column body (101) and the cross beam (2); Removing the inner template of the beam after the concrete reaches the strength, and tensioning the prestress; and continuing to construct until the bridge tower is capped, and finishing the construction.
10. The construction method of the bridge tower structure according to claim 9, wherein the beam (2) is internally provided with prestressed steel bundles (4), the prestressed steel bundles (4) sequentially pass through the tower column (1) and the hollow part (202) on the same side, and also the middle solid part (201) and extend to the hollow part (202) on the opposite side, and the prestressed steel bundles (4) on two sides are mutually crossed.

Description

Bridge tower structure and construction method Technical Field The invention relates to the technical field of bridges, in particular to a bridge tower structure and a construction method. Background Along with the progress of science and technology and the sustainable development of socioeconomic and cultural level, people put higher demands on bridge construction. For large-span cable-stayed bridges and suspension bridges, the bridge tower modeling is a core window for showing the building aesthetics of the bridge. The adoption of a proper structural form to adapt to the shapes of the bridge towers with more and more complicated and various shapes, the unification of mechanics and aesthetics is achieved, and the bridge tower is one of the important challenges of current bridge engineers. The bridge tower cross beam is a key bearing part in the bridge structure and is usually connected at the transverse position of the main tower, so that the bridge tower cross beam plays important roles in load transmission, stability enhancement and bridge deck support. The structural design between the tower column and the cross beam directly influences the reliability and stability of the whole structure of the bridge tower, and the bridge tower is novel in structure, but the whole cross beam of the bridge tower is generally of a uniform solid structure, is not attractive, even is unreasonable in structure, loses innovation significance, and brings potential safety hazards to the structure. Disclosure of Invention The invention aims to provide a bridge tower structure and a construction method, wherein the structural design between a tower column and a cross beam is reasonable, the force flow is smooth, and the structure is safer and more reliable. To achieve the purpose, the invention adopts the following technical scheme: The bridge tower structure comprises a tower column and a cross beam, wherein the cross beam is fixed between the upper parts of the tower columns at two sides, the cross beam comprises a solid part and a hollow part, the hollow parts are respectively arranged at two ends of the solid part, the solid part is respectively connected with the tower columns at two sides through the hollow parts at two ends, the height of the cross beam is gradually increased from the middle solid part to the hollow parts at two ends, and the width of the cross beam is gradually increased from the middle solid part to the hollow parts at two ends. As a preferable scheme of the bridge tower structure, at least one side of the upper side and the lower side of the cross beam is in horizontal height gradual change, so that the beam height of the cross beam is gradually increased from the middle solid part to the hollow parts at the two ends, and at least one side of the front side and the rear side of the cross beam is in gradual change structure, so that the width of the cross beam is gradually increased from the middle solid part to the hollow parts at the two ends. As a preferred scheme of the bridge tower structure, the gradual change structure of the upper side, the lower side, the front side and/or the rear side of the cross beam is arc, inclined straight line or step. As a preferable scheme of the bridge tower structure, the upper side, the lower side, the front side and the rear side of the cross beam are arc gradual change structures. As a preferable scheme of the bridge tower structure, the arc convex surface of the arc gradual change structure at the lower side of the cross beam faces the inner part of the cross beam, the arc convex surface of the arc gradual change structure at the upper side of the cross beam faces the outer part of the cross beam, and the arc convex surfaces of the arc gradual change structures at the front side and the rear side of the cross beam face the inner part of the cross beam. As a preferable scheme of the bridge tower structure, a plurality of transverse plates are sequentially distributed in the hollow part from top to bottom, and the transverse plates at the uppermost layer and the lowermost layer are respectively matched with the upper side and the lower side of the cross beam. As a preferable scheme of the bridge tower structure, the thickness of the transverse plates in the middle of the hollow part is larger than that of the transverse plates on the upper side and the lower side of the hollow part. As a preferable scheme of the bridge tower structure, the lower part symmetry of the tower column on both sides is provided with the bracket, the longitudinal section of bracket is far away from one side of tower column reduces gradually, the bracket is kept away from one side of tower column is solid structure, the bracket is close to one side of tower column is hollow structure, just the hollow side inside of bracket from top to bottom distributes a plurality of horizontal supporting parts in proper order. The invention also provides a construction method of the bridge tower structu