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Prestressed rod core bag grouting combined anti-floating component and construction method

A technology of prestressed rods and construction methods, which is applied in the direction of infrastructure engineering, construction, protection devices, etc., can solve problems such as hidden water leakage in basements, achieve the effects of improving pullout resistance, solving hidden dangers of water leakage, and shortening the construction period

Pending Publication Date: 2022-05-24
ZHEJIANG PROVINCE INST OF ARCHITECTURAL DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method that can not only effectively shorten the construction period, but also effectively solve the hidden danger of water leakage in the basement when using the prestressed rod core in the prior art; Prestressed Rod Core Capsule Bag Grouting Combination Anti-floating Component and Construction Method for Effectively Improving the Pullout Capability of Anchor Rods

Method used

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  • Prestressed rod core bag grouting combined anti-floating component and construction method
  • Prestressed rod core bag grouting combined anti-floating component and construction method
  • Prestressed rod core bag grouting combined anti-floating component and construction method

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specific Embodiment 1

[0033] Specific embodiment one: as figure 1 , figure 2 , image 3 As shown, a prestressed rod core bladder bag grouting combined anti-floating component construction method includes the following steps:

[0034] First, the pile hole construction, drill holes at the bottom of the foundation pit to form the pile hole 2.

[0035] Second, the prefabricated prestressed anchor rod 1 is installed, the prefabricated prestressed anchor rod is lowered into the pile hole, and the lower end of the prefabricated prestressed anchor rod is supported at the bottom of the pile hole. The prefabricated prestressed anchor rod includes a squeeze and expansion device, a prefabricated anchor pile 1.1 and a vertical prestressed steel bar 1.2 embedded in the prefabricated anchor pile. The upper end of the vertical prestressing steel bar protrudes above the prefabricated anchor pile and forms a reserved steel bar 1.3 above the prefabricated anchor pile. The extrusion and expansion device includes...

specific Embodiment 2

[0048] Specific embodiment two: as figure 1 , figure 2 , image 3 As shown, a prestressed rod core bladder grouting combined anti-floating component includes a prefabricated prestressed anchor rod 1 . The prefabricated prestressed anchor rod includes a squeeze and expansion device, a prefabricated anchor pile 1.1 and a vertical prestressed steel bar 1.2 embedded in the prefabricated anchor pile. The upper end of the vertical prestressing steel bar protrudes above the prefabricated anchor pile and forms a reserved steel bar 1.3 above the prefabricated anchor pile. The extrusion and expansion device includes a bladder 1.4 sleeved outside the prefabricated anchor pile, a grouting cavity 1.9 formed between the bladder and the outer wall of the prefabricated anchor pile, and a grouting set in the prefabricated anchor pile and communicated with the grouting cavity. Channel 1.6. The upper end of the grouting channel communicates with the upper end of the prefabricated anchor pi...

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Abstract

The invention discloses a prestressed rod core bag grouting combined anti-floating component and a construction method, and aims at providing the prestressed rod core bag grouting combined anti-floating component which can effectively shorten the construction period and effectively solve the problem that when a prestressed rod core in the prior art is used, a basement has the hidden danger of water leakage. According to the prestressed rod core bag grouting combined anti-floating component and the construction method, the anti-pulling capacity of an anchor rod can be effectively improved under the condition that a bottom expanding and hole forming process is omitted. The construction method of the prestressed rod core bag grouting combined anti-floating component comprises the following steps that firstly, a pile hole is constructed; secondly, prefabricated prestressed anchor rods are installed, and the prefabricated prestressed anchor rods are lowered into the pile holes; thirdly, pile hole grouting is conducted, specifically, anchoring slurry is poured into the pile hole, and a gap between the inner wall of the pile hole and the prefabricated pre-stressed anchor rod is filled; fourthly, an anchor rod expanded head is formed in the pile hole; and fifthly, basement bottom plate construction is conducted, and concrete is poured at the bottom of the foundation pit to form a basement bottom plate.

Description

technical field [0001] The invention relates to the technical field of basement anti-floating, in particular to a prestressed rod core bladder bag grouting combined anti-floating component and a construction method. Background technique [0002] With the development of urban underground space, the problem of basement anti-floating has become more and more common. As an effective measure for anti-floating of underground structures, bolts have been widely used. Ordinary concrete bolts are in tension during service. Due to the relatively low tensile bearing capacity of concrete, ordinary concrete bolts are prone to cracks. When the site soil and water are corrosive, cracks in ordinary concrete anchors will cause corrosion of steel bars and reduce their bearing capacity, and in severe cases will cause structural safety problems. [0003] In order to solve the above problems, the technology of applying prestress to the steel bars in the concrete bolts is generally used to contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/54E02D5/74E02D15/04E02D31/12
CPCE02D5/54E02D5/74E02D15/04E02D31/12Y02E10/727
Inventor 杨学林祝文畏沈米钢叶甲淳吕峰
Owner ZHEJIANG PROVINCE INST OF ARCHITECTURAL DESIGN & RES