Concrete combined cushion wedge for supporting waist beam for pile anchoring system, and its constrection method

Abstract

The invention relates to a foundation pit engineering of constructing by pile-anchor timbering system. And the invention provides a concrete combined padding wedge, mainly comprising inner and outer parts, where the inner part is composed of bores, reinforcing steel bars and cement mortar, where the reinforcing steel bars are inserted in bores on the wall protection pile and the cement mortar is poured for anchoring; and the outer part is composed of concrete and steel padding plate, where the outer and inner steel plates are located and welded together, and the concrete is poured so that the reinforcing steel bars, steel padding plates and cast-in-site concrete form the combined padding wedge. At the time of concrete construction, firstly locating reinforcing steel bars, cutting holes and then anchoring the reinforcing steel bars with cement mortar and welding with the steel padding plates and moulding the cast-in- site concrete to form the concrete combined padding wedge. And its beneficial effects: effectively reducing wale section size and reducing engineering cost; assuring the whole wale stability, having stronger vertical load bearing ability and improving safety and stability of constructing course.

Description

technical field [0001] The invention belongs to the technical field of foundation engineering, and relates to a deep foundation pit engineering constructed with a pile-anchor support system. Background technique [0002] At present, in deep foundation pit projects constructed with pile-anchor support systems, the horizontal position of the same row of anchor cables (rods) should be guaranteed to be on a straight line. The structure is an important part of the entire support system. The connection method between the waist beam and the retaining pile not only affects the strength and stability of the waist beam, but also affects the transmission of the vertical component force of the anchor cable (rod), and finally directly affects the entire support system. The supporting effect and the safety and stability of deep foundation pit. The inner side and outer side of the completed wall protection piles are often irregular, forming a situation of "inside out", the traditional wai...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a concrete joint pad wedge supporting the waist beam in the pile-anchor system and its construction method, so as to solve the situation that the traditional waist beam is easy to lose stability or fall off, and at the same time weaken the peak value of the bending moment that the waist beam bears And bear the vertical component force of the anchor cable (rod) to improve the overall stability of the waist beam and achieve the purpose of maintaining the stability of the foundation pit support

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