阅读说明：本技术 一种用于锁扣钢管桩围堰锁扣的止水胶泥材料及止水方法 (Water-stopping daub material for locking steel pipe pile cofferdam and water-stopping method ) 是由 文常娟 张泽明 王渊 于 2020-06-23 设计创作，主要内容包括：本发明提供了一种用于锁扣钢管桩围堰锁扣的止水胶泥材料及止水方法,属于围堰施工领域,止水胶泥材料由粘土、膨润土、聚丙烯纤维添加水混合而成。止水方法包括步骤配置所述止水胶泥材料；向所述开缝钢管中填充所述止水胶泥材料所述锁扣插件采用振动插打的方式进入所述开缝钢管；压实所述止水胶泥材料。通过本发明提供的用于锁扣钢管桩围堰锁扣的止水胶泥材料及止水方法,可不受工程周边无良好的天然粘土限制,选取周边粘土,通过添加膨润土和聚丙烯纤维改良成性能良好的软塑状胶泥,使其粘聚力和遇水离散性能改善,确保锁扣钢管桩围堰封水成功率。该止水胶泥各原材料易于购买,且价格不高,具有较好的经济效益。(The invention provides a water-stopping daub material for locking steel pipe pile cofferdam locks and a water-stopping method, belonging to the field of cofferdam construction. The water stopping method comprises the steps of configuring the water stopping daub material; filling the water-stopping daub material into the slotted steel pipe, and enabling the lock catch insert to enter the slotted steel pipe in a vibration inserting and beating mode; and compacting the water stopping daub material. According to the water-stopping daub material and the water-stopping method for the lock catch of the lock catch steel pipe pile cofferdam, which are provided by the invention, the limitation of no good natural clay at the periphery of the engineering can be avoided, the peripheral clay is selected, and the bentonite and the polypropylene fiber are added to improve the soft plastic daub with good performance, so that the cohesive force and the water-encountering dispersion performance of the soft plastic daub are improved, and the success rate of water sealing of the lock catch steel pipe pile cofferdam is ensured. The water-stopping daub is easy to purchase raw materials, low in price and good in economic benefit.)

1. The water-stopping daub material for the lock catch of the steel pipe pile cofferdam is characterized by being prepared by adding water and mixing clay, bentonite and polypropylene fibers.

2. The water-stopping daub material for locking the steel-pipe pile cofferdam of claim 1, wherein the clay in the water-stopping daub material is granular clay formed by drying in the sun and crushing.

3. The water-stopping daub material for locking steel-pipe pile cofferdam of claim 2, wherein the weight ratio of clay, bentonite, polypropylene fiber and water in the water-stopping daub material is 100: 37-43: 2-2.5: 50-53.

4. The water-stopping daub material for locking steel-pipe pile cofferdam of claim 3, wherein the weight ratio of clay, bentonite, polypropylene fiber and water in the water-stopping daub material is 100: 39: 2-2.5: 50-53.

5. The water-stopping daub material for locking steel-pipe pile cofferdam of claim 4, wherein the weight ratio of clay, bentonite, polypropylene fiber and water in the water-stopping daub material is 100: 39: 2.27: 50-53.

6. The water-stopping daub material for locking steel-pipe pile cofferdam of claim 5, wherein the weight ratio of clay, bentonite, polypropylene fiber and water in the water-stopping daub material is 100: 39: 2.27: 51.4.

7. a water stopping method for locking steel pipe pile cofferdam lock, characterized in that the water stopping daub material according to any one of claims 1-6 is used for stopping water at the joint of two adjacent locking steel pipe piles, the joint of two adjacent locking steel pipe piles is provided with a slotted steel pipe and a locking plug-in inserted into the slotted steel pipe, comprising the following steps:

preparing the water-stopping daub material;

filling the slit steel pipe with the water-stopping daub material

The lock catch plug-in enters the slotted steel pipe in a vibration insertion mode;

and compacting the water stopping daub material.

8. The water stopping method for locking the steel pipe pile cofferdam of claim 7, further comprising the step of, after the step of disposing the water stopping mastic material:

Kneading the water-stopping cement material into a strip-shaped storage cement strip, and wrapping the storage cement strip by using plastic cloth.

9. The water stopping method for locking steel-pipe pile cofferdam of claim 8, wherein the length of the storage daub strip is 50cm, and the diameter is 2-3 cm.

Technical Field

The invention relates to the field of cofferdam construction, in particular to a water-stopping daub material for locking steel pipe pile cofferdam lock catches and a water-stopping method.

Background

The lock catch steel pipe pile cofferdam is more and more common to be applied to construction of bridge deep water foundation bearing platforms, and has the advantages of mature processing technology, simple construction method, short construction period and the like. The lock catch steel pipe pile cofferdam consists of single steel pipe pile units, each unit consists of a main steel pipe, I-shaped steel welded on two sides and a slotted steel pipe, and the units are connected in a meshing manner through the I-shaped steel and the slotted steel pipe. The water stopping material is filled in the slotted steel pipe to solve the problem of water stopping among units, the water stopping material mainly used at present is natural clay with low sand content and strong cohesiveness, and the natural clay has high cohesiveness, is not easy to disperse when meeting water and has a good water stopping effect. However, no natural clay with good performance exists near the actual engineering, most of the natural clay is not strong in cohesiveness, the sand content is high, so that the natural clay is easy to disperse when meeting water, the water stopping effect is poor, and the natural clay is easy to lose efficacy in the process. The lock catch steel pipe pile cofferdam is composed of units, the positions needing water stopping treatment are more, the success of water sealing of the whole cofferdam can be guaranteed only by guaranteeing the success of water stopping among all the units, if the clay with low reliability of water stopping performance is used for the lock catch steel pipe pile cofferdam, the success rate of water sealing of the cofferdam cannot be guaranteed, and no efficient treatment method exists.

Disclosure of Invention

The invention provides a water-stopping daub material for locking steel pipe pile cofferdam lock catches and a water-stopping method, and aims to solve the problems of the water-stopping daub material and the water-stopping method for locking steel pipe pile cofferdam lock catches in the prior art.

The invention is realized by the following steps:

a water-stopping daub material for locking steel pipe pile cofferdam is prepared by adding water into clay, bentonite and polypropylene fiber and mixing.

In an embodiment of the present invention, the clay in the water-stopping daub material is granular clay formed by drying in the sun and then crushing.

In one embodiment of the present invention, the weight ratio of the clay, the bentonite, the polypropylene fiber and the water in the water-stopping cement material is 100: 37-43: 2-2.5: 50-53.

In one embodiment of the present invention, the weight ratio of the clay, the bentonite, the polypropylene fiber and the water in the water-stopping cement material is 100: 39: 2-2.5: 50-53.

In one embodiment of the present invention, the weight ratio of the clay, the bentonite, the polypropylene fiber and the water in the water-stopping cement material is 100: 39: 2.27: 50-53.

In one embodiment of the present invention, the weight ratio of the clay, the bentonite, the polypropylene fiber and the water in the water-stopping cement material is 100: 39: 2.27: 51.4.

A water stopping method for locking steel pipe pile cofferdam lock catches, water stopping is carried out on the joints of two adjacent locking steel pipe piles by using the water stopping daub material, a slotted steel pipe and a locking plug-in inserted into the slotted steel pipe are arranged at the joints of the two adjacent locking steel pipe piles, and the water stopping method comprises the following steps:

preparing the water-stopping daub material;

filling the slit steel pipe with the water-stopping daub material

The lock catch plug-in enters the slotted steel pipe in a vibration insertion mode;

and compacting the water stopping daub material.

In an embodiment of the present invention, after the step of disposing the water-stopping mastic material, the method further includes the steps of:

kneading the water-stopping cement material into a strip-shaped storage cement strip, and wrapping the storage cement strip by using plastic cloth.

In one embodiment of the invention, the storage mastic strip is 50cm in length and 2-3cm in diameter.

The invention has the beneficial effects that: according to the water-stopping daub material and the water-stopping method for the lock catch of the lock catch steel pipe pile cofferdam, which are provided by the invention, the limitation of no good natural clay at the periphery of the engineering can be avoided, the peripheral clay is selected, and the bentonite and the polypropylene fiber are added to improve the soft plastic daub with good performance, so that the cohesive force and the water-encountering dispersion performance of the soft plastic daub are improved, and the success rate of water sealing of the lock catch steel pipe pile cofferdam is ensured. The water-stopping daub is easy to purchase raw materials, low in price and good in economic benefit.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a first view angle for locking a steel pipe pile cofferdam in a second embodiment of the invention;

fig. 2 is a schematic structural diagram of a second view angle for locking the steel pipe pile cofferdam according to the second embodiment of the invention.

Icon: 001-locking steel pipe piles; 010-slotting steel pipes; 030 Snap-fastener insert

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.