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Assembled waist rail

A prefabricated, waist-beam technology, applied in construction, excavation, infrastructure engineering, etc., can solve the problems of delaying construction period, affecting construction safety, easy deformation, etc., achieving good structural rigidity, convenient installation, and saving raw material costs.

Active Publication Date: 2012-10-03
SHANGHAI STRONG FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome many problems in the prior art, such as insufficient rigidity of the waist beam, easy deformation, removal of the steel waist beam will affect construction safety, delay the construction period, etc., and provide an assembled waist beam

Method used

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Embodiment Construction

[0027] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0028] see figure 1 and figure 2 , in this embodiment, the vertical retaining structure is a SMW construction method pile, and the steel 1 is inserted. The profile steel 1 has an "I"-shaped cross section, the assembled waist beam 3 rests on the side of the profile steel 1 as a whole, and the anchor bar 2 passes through the middle of the two parallel profile steel 1, and is locked on the side of the profile steel 1 through the waist beam.

[0029] see figure 2 , Figure 2a , Figure 2b , image 3 , Figure 4 , assembled waist beam 3, including a pair of channel steel 31, channel steel 31 is set back to back, one side of channel steel 31 is welded together with steel plate 32, the upper and lower length of steel plate 32 extends to the edg...

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Abstract

An assembled waist rail comprises section steel and reinforced concrete; two stressed surfaces of the waist rail are nonparallel to each other; a locking mechanism applying a prestressing force is arranged on one side of the waist rail; and a triangular cushion block is arranged on the other side of the waist rail, and is clamped between the waist rail and one side wall of a foundation pit. The stressing capacity, the shearing capacity and the bending capacity of the waist rail are improved considerably, cracks are eliminated, the waist rail is not deformed when the prestressing force is applied, the use amount of concrete is reduced, the mounting and the dismounting are convenient, the recycling is achieved, and the construction cost is lowered.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a waist beam used for connecting anchor rods or stiffening piles in foundation pit support construction. Background technique [0002] In foundation pit support, the waist beam is a beam arranged under the top of the support structure to transmit the fulcrum force of the support structure and the anchor rod. Waist beams are usually arranged horizontally at the middle height of the retaining wall, and one end of the brace supporting the retaining wall is fixed to the waist beam. In this way, the support of the diagonal brace to the retaining wall can be changed from a point to a line, thereby improving the stability of the retaining wall. [0003] Existing waist beams usually use shaped steel waist beams, and oblique anchor rods or reinforcements in stiffened piles are connected to the waist beams. Due to the limitation of beam stiffness, the waist beam often twists an...

Claims

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Application Information

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IPC IPC(8): E02D17/02
Inventor 刘全林宋伟民毕平均宋雪清虞佰先
Owner SHANGHAI STRONG FOUND ENG
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