Water stop belt and deformation joint waterproof structure

Abstract

The invention relates to the field of building waterproofing and discloses a water stop belt and a pipe gallery deformation joint waterproof structure. The water stop belt comprises a waterproof layerand a lining layer in the thickness direction and an extending-and-retracting portion and connection portions in the width direction, wherein the waterproof layer is arranged on one or more faces ofthe lining layer in a covering manner; and the extending-and-retracting portion is located in the middle, and the connection portions are located at the two sides. The extending-and-retracting portionis folded, so that an extendable-and-retractable structure is formed. The strength and rigidity of the material of the lining layer are greater than those of the waterproof layer. The waterproof layer and the lining layer are compounded in the water stop belt; the stress generated by the vast majority of self weight on the extending-and-retracting portion of the water stop belt is borne by the lining layer, and thus the fatigue and aging problems of the waterproof layer are avoided to a great extent; the service life of the water stop belt can be prolonged; by means of physical deformation ofthe extending-and-retracting portion of the water stop belt, deformation, caused by differential settlement, of a pipe gallery can be resisted against; after deformation is generated, the strength, sealing performance and material performance are not affected; the waterproof effect can be achieved better; and the water stop belt is particularly applicable to deformation joint waterproofing of thecomprehensive pipe gallery.

Description

technical field [0001] The invention relates to the field of building waterproofing, in particular to a waterproof structure for deformation joints of waterstops and pipe galleries. Background technique [0002] Whether it is tunnels, bridges, embankments, roads, buildings or the houses we live in, waterproofing cannot be ignored, especially in the construction of underground comprehensive pipe corridors, waterproofing is an essential process. The design service life of the general pipe gallery is 100 years, which can be called a century-old project in the true sense, 30 years longer than the service life of the housing construction project. How to do a good job of waterproofing the deformation joints of the pipe gallery for a long time is of great significance to the long-term use of the urban underground comprehensive pipe gallery. [0003] Waterstops are currently the most widely used waterproofing facilities for engineering gaps. Commonly used waterstops include traditi...

AI Technical Summary

Problems solved by technology

The rubber itself is not strong in resistance to stretching and twisting. Long-term stretching and deformation will cause permanent fatigue deformation, and the elasticity and plasticity will deteriorate. Coupled with natural aging, it is easy to crack and break, and loses the waterproof effect.

[0006] 2. High requirements for construction control

[0008] 3. High risk of leakage

[0009] Due to the difference in thermal expansion coefficient between the rubber and concrete of the traditional mid-buried rubber waterstop, micro gaps will appear over time. The improved steel edge rubber waterstop adds steel edges, and although it is more tightly bonded to the concrete, the rubber There will still be micro gaps on the contact surface with the concrete, and the intrusion of water vapor will cause corrosion to the steel edge, which will also affect the airtightness of the steel edge after a long time, resulting in a decrease in the overall airtightness and leakage

[0010] 4. It is difficult to replace

However, this kind of waterstop has an obvious defect: the material of the waterstop is mostly rubber, the stretchable structure is suspended on the deformation joint, and the folding structure has a large self-weight, which makes it always in a stretched state. It has been in a state of high stress, and the rubber is prone to fatigue and aging. Therefore, the service life of this waterstop is very short, and the actual application is far less than that of the buried rubber waterstop.

This is the reason why the mid-buried rubber waterstop adopts anti-deformation round holes instead of folding structures, but it still cannot completely solve the fatigue aging problem of rubber

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