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Underground structure crack control construction method by adding inducing joints

A technology of underground structure and construction method, applied in underwater structures, infrastructure engineering, artificial islands, etc., can solve problems such as wall cracking, achieve easy operation, increase the scope of limiting cracking and deformation, and have good social and economic benefits Effect

Active Publication Date: 2014-09-10
中建五局第三建设有限公司
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Problems solved by technology

But even here, the problem of wall cracking has not been completely solved

Method used

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  • Underground structure crack control construction method by adding inducing joints
  • Underground structure crack control construction method by adding inducing joints

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] see figure 1 with figure 2 The anti-cracking construction method for adding induced joints to underground structures, including the design of induced joints, binding of steel bars at induced joints, pre-embedded formwork support, concrete pouring, external waterproof reinforcement layer and internal filling of permeable crystalline waterproof materials, the steps are as follows:

[0034] (1), induced seam design:

[0035] Through in-depth design, through the calculation and approval of the design institute, the position and spacing of the induced joints are determined. The width of the pre-cracked cracks after checking and calculation must meet the requirements of use. It is determined by the design and specification requirements that the induced joints cannot replace the expansion joints but can reduce the number of expansion joints ...

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Abstract

The invention discloses an underground structure crack control construction method by adding inducing joints. The method includes inducing joint design, inducing joint part steel bar binding, embedded formwork setting up, concrete pouring, outer waterproof reinforcing layer construction and inner permeable crystalline waterproof material filling. The inducing joints are arranged on a concrete structure to form pre-cracking parts, stress concentration is reduced in a releasing manner, stress is relieved, further wall crack expansion is reduced and controlled, and range of cracking and deformation is limited. Water proofing is enhanced on pre-cracking parts, waterproof effect is guaranteed, and project quality is improved. The method can be widely applied to exterior wall construction of basement concrete structures in the fields of industrial and civil buildings.

Description

technical field [0001] The invention relates to an anti-crack construction method for induction joints, in particular to an anti-crack construction method for adding induction joints to underground structures. Background technique [0002] Reinforced concrete structures often have cracks due to concrete drying shrinkage and thermal expansion and contraction, which will affect building functions, structural durability, and structural bearing capacity. In order to reduce the occurrence of cracks, measures such as reserving post-casting strips, adding fibers to concrete, increasing and densifying reinforcement, etc. are usually adopted. But even at this, the problem of wall cracking still cannot be completely solved. In response to this situation, the method of adding induced cracks to prevent cracking is adopted to form a pre-cracking part, to reduce stress concentration and release stress in a "release" manner, thereby reducing and controlling the development of cracks on th...

Claims

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Application Information

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IPC IPC(8): E02D29/16E02D29/045E02D31/02
Inventor 廖飞何昌杰谢小红任自力邓小军
Owner 中建五局第三建设有限公司
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