An optimization method for closed steel frame of arched structure with thick roof
A technology of arched structure and steel frame, which is used in earth-moving drilling, shaft equipment, shaft lining, etc., can solve the problems of unfavorable pouring of concrete, tying of stirrups, small density, etc. The effect of bearing capacity and speeding up the construction progress
Active Publication Date: 2020-10-09
BEIJING URBAN CONSTR GROUP
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[0003] However, due to the different site environment, upper bearing, geological conditions, and application functions, sometimes an arched structure with a large-thickness roof is used. It is not conducive to the binding of pouring concrete and stirrups, and the load bearing of the thick roof should also be designed specifically. Therefore, how to reduce the amount of steel bars under the condition of ensuring the force, it is necessary to provide an arched structure of the thick roof Optimal method for the application of lower closed steel frame
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[0051] Such as figure 1 As shown, taking the arched structure of the thick roof as an example, it is made of reinforced concrete, including the roof 1, the partition wall 2 connected to the two ends of the roof 1, and the bottom plate 3 connected to the bottom ends of the two partition walls 2, wherein the thickness of the roof 1 is 2.0m-3.0m; if figure 2As shown, the closed reinforcement frame of the arched structure includes the roof reinforcement frame 4 located on the roof 1 of the arched structure, the partition wall reinforcement frame 5 connected to the two ends of the roof reinforcement frame 4, and the floor reinforcement frame connected to the bottom of the two partition wall reinforcement frames 5 Frame 6; the roof reinforcement frame 4 is arranged in layers, and each layer includes circumferential ribs along the arched structure and axial ribs along the long direction of the arched structure, and the circumferential ribs and axial ribs are arranged alternately to ...
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The invention discloses a closed steel bar framework of a thick-roof arch structure and an optimization method. The closed steel bar framework comprises a roof steel bar framework positioned on a roofof the arch structure, partition steel bar frameworks connected to two end parts of the roof steel bar framework, and bottom plate steel bar frameworks connected to the bottoms of the two partition steel bar frameworks, wherein the top plate steel bar frames are arranged in a layered mode, and the interlayer steel bar meshes are connected through top plate single-limb stirrups and are connected to a group of steel bar supports. The method mainly adopts the methods of upright post bearing, single-limb stirrup replacement and the like during the steel bar optimization. According to the closed steel bar framework of the thick-roof arch structure and the optimization method, the roof steel bar frameworks are arranged in the layered mode, so that the layered pouring, vibrating and stress of the roof are conveniently carried out; vertical steel bar frameworks and cross beams among the steel bar frameworks are arranged, so that the force bearing performance of roof structure after pouring isimproved; according to the equal strength method and the equal area method, closed stirrups are replaced by the single-limb stirrups, so that the stress of the top plate structure is ensured, the steel bar using amount of the whole arch-shaped structure closed steel bar framework is further optimized, and the construction is convenient, and the working efficiency is improved.
Description
technical field [0001] The invention relates to the field of steel bar engineering for arched structures, in particular to an optimization method for a closed steel bar frame of an arched structure with a thick roof. Background technique [0002] At present, due to the increasingly common application of underground structures such as tunnels, culverts, and pipelines, the arched structure used in the design of underground structures is one of the important forms. In the arch structure, the reinforced concrete frame structure is the most common application. The layout of this structure is flexible, it is convenient for standardized construction, and its materials are easy to obtain, and its mechanical performance is good. Therefore, the reinforced concrete frame structure has been widely implemented. [0003] However, due to the different site environment, upper bearing, geological conditions, and application functions, sometimes an arched structure with a large thickness roof...
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IPC IPC(8): E21D11/18E21D11/15E21D11/10E21D11/28
CPCE21D11/10E21D11/152E21D11/18E21D11/28
Inventor 李鹏卢喜成毛杰谢会雪李红涛张凯赵书东于越马锋锋肖平芳
Owner BEIJING URBAN CONSTR GROUP