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Split bolt assembly and application thereof in water conservancy pouring formwork system

A technology of pulling bolts and components, which is applied to the preparation of building components on site, the connectors of formwork/formwork/work frame, construction, etc., which can solve the failure of secondary grouting, technical difficulties, and the inability to fully realize the closure of microscopic channels and other problems to achieve the effect of solving the plug hole plugging leakage, eliminating the need for treatment process, and avoiding the effect of water seepage in the bolt hole

Active Publication Date: 2018-06-12
浙江省正邦水电建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is fatal for water conservancy dams and coastal defense engineers. When rainwater, oil stains, etc. are eroded, they will enter between the secondary grouting and the bolt hole along the microscopic channel, and corrode the location of the secondary grouting. If it encounters seawater, acid rain, etc. situation, this corrosion will accelerate and eventually render the secondary grouting ineffective
[0006] That is to say, there are technical defects in the existing secondary grouting for plugging the bolt holes. The applicant found through research that no matter how the existing bolt holes are treated, the microscopic channel closure after plugging cannot be completely realized in theory. Phenomenon, that is to say, in the existing construction technology, the overall service life of the bolt hole is less than that of the pouring body, which is the weak link of pouring
[0007] In addition, the existing technology basically stays on the idea of ​​how to use the idea of ​​plugging the bolt hole for anti-seepage water treatment, such as using mortar or resin material, perhaps due to technical difficulty or technical prejudice, it is considered that plugging The bolt hole has become the technical trend and technical status

Method used

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  • Split bolt assembly and application thereof in water conservancy pouring formwork system
  • Split bolt assembly and application thereof in water conservancy pouring formwork system
  • Split bolt assembly and application thereof in water conservancy pouring formwork system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] refer to Figure 1 to Figure 3 , The structure of the pull bolt assembly, including the fastener 10, the pull rod 20, the connecting rod 30 and the lead screw 40, will be described in detail below.

[0034] Fastener 10, using existing M18 steel bolts, can be disassembled and reused.

[0035] The tie rod 20 is made of injection-molded engineering plastics, the diameter is about 25 mm, and one end of the tie rod is provided with a thread 21, and the thread is used to fix the fastener. The threaded end is provided with an enlarged shape, which is convenient to provide space for the thread. The other end of the pull rod is the hinge end 22, which is provided with a notch for hinge, and a pin hole for hinge is preset in the notch.

[0036] There are four connecting rods 30 in total, which are symmetrically arranged on the upper part and the lower part of the pulling rod. Both ends of the connecting rod 30 are provided with pin holes. The other ends of the upper two connec...

Embodiment 2

[0044] refer to Figure 4 , to further improve, before pouring concrete, put a blocking sheet 60 on the tie rod in advance, the blocking sheet is made of rubber film, has a certain elasticity, including elastic film and elastic sleeve, wherein the elastic sleeve and the tie rod cooperate, And for the tight fit, the fit is tight. After the pouring is completed, the plugging sheet forms a better waterproof effect, which is suitable for the underwater environment with a certain pressure, such as the waterproof occasions in water conservancy projects and river engineering, and has more positive significance.

[0045] According to actual needs, the above-mentioned blocking sheet can be designed into multiple channels to form multi-level waterproofing. In actual use of this design, the waterproofing level of the pull-bolt hole is better than the waterproofing performance of the building itself.

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Abstract

The invention discloses a split bolt assembly and application thereof in a water conservancy pouring formwork system. The split bolt assembly comprises fastening pieces, pull rods, connecting rods anda lead screw, one ends of the pull rods are provided with threads and connected with the fastening pieces through the threads, and the other ends of the pull rods are hinging ends. Every two connecting rods are symmetrically arranged on the upper portions and the lower portions of the pull rods, and the connecting rods are connected with the hinging ends of the pull rods in a hinged mode. The other ends of the two connecting rods on the upper side are hinged into an upper block, and the two connecting rods on the lower side are hinged into a lower block, so that a parallelogram structure is formed. By rotating the lead screw, the shape of the parallelogram structure is adjusted. Through the application of the split bolt assembly in a formwork technology, pull bolt holes cannot be reservedin a pouring body after formwork dismounting, the treatment technique to the pull bolt holes in the later period is omitted, the problems of water permeating and leaking, caused by subsequent blockage and grouting techniques, of the pull bolt holes are further avoided, and the problems of blocking and water leaking of the pull bolt holes in the prior art are fundamentally solved.

Description

technical field [0001] The invention relates to the technical field of concrete pouring engineering. Background technique [0002] In civil construction projects such as construction and transportation, the formwork technology is generally used in the concrete pouring process, that is, the use of molds for pouring and forming. During the pouring process, pull bolts must be used to tightly pull the formwork on both sides to form a reliable connection. [0003] Take the common steel-wood formwork as an example. Usually, when using the steel-wood formwork, it is necessary to drill the formwork and fix it with the tie bolts. The tie bolts are steel bolts, and the two ends are claw nuts. Afterwards, ensure that the formwork does not shift during the pouring process. In order to facilitate the removal of the pull bolts, PVC pipe fittings are usually sleeved on the pull bolts in the pouring area. According to the amount of pouring works, the common spacing between the tie bolts i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G17/065
CPCE04G17/0657
Inventor 孔金河
Owner 浙江省正邦水电建设有限公司