Prestressed cantilever support structure of large cantilever bent cap and construction method
A cantilever support and prestressing technology, applied in bridges, bridge parts, bridge construction and other directions, can solve problems such as affecting lane setting, increasing ground traffic pressure, interference, etc., and achieving a simple structure, easy erection and construction, and convenient construction. Effect
Pending Publication Date: 2020-07-10
ZHEJIANG COMM CONSTR GRP CO LTD
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Problems solved by technology
[0004] In the force cover beam support device and construction method disclosed above, steel pipe support columns of different heights are arranged on both sides of the cover beam, and the steel pipe support columns extend to the ground along the bottom of the cover beam, which makes the steel pipe support columns opposite to each other. The ground road under the cover beam brings interference, which affects the lane setting of the ground road under the cover beam, and increases the traffic pressure on the ground
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[0030] The embodiments of the present invention will be described in detail below in conjunction with the drawings.
[0031] Such as Figure 1-3 As shown, a prestressed cantilever support structure of a large cantilever cover beam includes a bridge pier 101, a cover beam 102 and a platform 103. The bridge pier 101 is located between the cover beam 102 and the platform 103; the bridge pier 101 is symmetrically arranged on the two platforms 103 At the end, the side of the bridge pier 101 is provided with a symmetrically arranged support column 201; the bottom of the support column 201 is supported on the platform 103, and a support beam 301 is provided above the support column 201, and a support beam 301 is provided with a bottom of the cover beam 102 Slope adjustment truss 303; bracket beam 301 is provided with bracket prestressed cables 402 and prestressed anchoring devices 401 adapted to the bracket prestressed cables 402, the bracket prestressed cables 402 are arranged along th...
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A prestress cantilever support structure of a large cantilever bent cap comprises piers, a bent cap and a bearing platform, and the piers are located between the bent cap and the bearing platform. Thestructure is characterized in that the piers are symmetrically arranged at the two ends of the bearing platform, and symmetrically-arranged support stand columns are arranged on the side faces of thepiers; the bottom of each support stand column is supported on the bearing platform, a support cross beam is arranged over the support stand column, and a slope adjusting truss abutting against the bottom of the bent cap is arranged on the support cross beam. A support prestressed cable and a prestressed anchoring device matched with the support prestressed cable are arranged on the support crossbeam. Compared with the prior art, the prestressed cable of the bent cap support is used for tensioning to realized a support large cantilever structure system, the support stand column arranged on aground road traffic lane is avoided from interfering in traffic, it is guaranteed that vehicles pass through the position below a bent cap cantilever smoothly, internal force control and displacementcontrol over the support cross beam can be achieved through tensioning of the support prestressed cable, construction is convenient, the structure is simple, and effectiveness and feasibility are achieved.
Description
Technical field [0001] The invention belongs to the technical field of road and bridge construction engineering structures, and particularly relates to a prestressed cantilever support structure of a large cantilever cover beam and a construction method. Background technique [0002] At present, the support form of the large cantilever cover beam mainly adopts a multi-column continuous beam system, that is, multiple columns are set as the beam support of the cover beam support to meet the force requirements of the support beam. However, the multi-pillar continuous beam system interferes with the maintenance of the ground road under the bridge. Vehicles must avoid the support pillars, and the ground road under the bridge must reduce the lanes and increase the traffic pressure on the ground. Therefore, it is necessary to develop a new type of large cantilever cover beam bracket to prevent the bracket column from invading the road lane on the ground, so as to solve the problem of th...
Claims
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IPC IPC(8): E01D21/10E01D19/00E01D19/02
CPCE01D21/10E01D19/00E01D19/02
Inventor 刘丰洲江甫王彬刘红雨余巍董泊宁杨启彪范凌峰吴勇成
Owner ZHEJIANG COMM CONSTR GRP CO LTD