Connecting structure of section steel support and concrete support, and construction method

A technology for connecting structures and construction methods, which is applied in basic structure engineering, excavation, construction, etc., can solve problems such as difficulty in laying out supports, insufficient support rigidity, and support materials that cannot be reused during the construction period, so as to shorten the construction period and resist shearing. The effect of high strength, convenient and fast connection

Active Publication Date: 2012-10-03
SHANGHAI STRONG FOUND ENG
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Problems solved by technology

[0003] In order to overcome the single supporting structure material of the existing foundation pit support in the irregularly shaped and large-area deep foundation pit support project, either the support material cannot be reused and the construction period is long, or the support rigidity is

Method used

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  • Connecting structure of section steel support and concrete support, and construction method
  • Connecting structure of section steel support and concrete support, and construction method

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[0025] In order to make it easy to understand the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further explained below in conjunction with the drawings and specific embodiments.

[0026] See figure 1 with figure 2 , Set multiple pre-embedded connecting bolts 4 in the reinforced concrete support 2. On both sides flanges of the H steel structure connector 3, rows of bolt holes are distributed at a certain interval, and one end of the pre-embedded connecting bolt 4 is in the reinforced concrete support 2. The steel bar 5 is connected, the other end is connected with the H steel structure connector 3, and then the concrete in the reinforced concrete support 2 is poured. After a certain period of curing, the H-shaped steel support 1 and the H steel structure connector 3 can be connected by bolts 6. .

[0027] The structure combines H-shaped steel support 1 and reinforced concrete support 2 in a foundation pit su...

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Abstract

The invention provides a connecting structure of a section steel support and a concrete support. The connecting structure comprises an H section steel support, an H steel structure connecting piece and a reinforced concrete support, and is characterized in that the steel structure connecting piece and the reinforced concrete support are stacked together horizontally; a pre-buried connecting bolt is arranged on the reinforced concrete support; one side of the steel structure connecting piece is connected with the reinforced concrete support through the pre-buried connecting bolt in a detachable manner; and the other side of the steel structure connecting piece is connected with the section steel support through a detachable high-strength bolt. The section steel support and the reinforced concrete support are combined in a foundation pit supporting plane, reinforced concrete structures are adopted in longer diagonal braces or angle braces and irregular rim positions, and section steel structures are adopted in regular rims and the positions of shorter diagonal braces or angle braces. Connection contacts have the advantages of high shear strength, recycling and reusing of section steel and the like, are convenient and fast to connect, and can achieve the purposes of construction period reduction, construction cost reduction and low carbon and environmental protection of the foundation pit supporting engineering.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an internal support structure and a construction method for foundation pit support, and the recycling and utilization of section steel materials. Background technique [0002] In the development process of urban underground space, as the development intensity and area increase, the plane shape of the underground space will change with the surrounding environment, such as irregular polygons or arcs, and large plane sizes. Many problems have been brought to the foundation pit support engineering. Compared with a rectangular foundation pit with a small plane size, irregular polygonal large-scale foundation pits, the force of the supporting structure and the difficulty of its layout are very high, often causing uneven force and deformation, and deformation is difficult to control Difficulties. For the support of smaller-sized rectangular plane foundation pits, the commonl...

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Application Information

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IPC IPC(8): E02D17/02
Inventor 刘全林宋伟民范君宇张涵
Owner SHANGHAI STRONG FOUND ENG
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