CN114934516A - Connecting device for joint positions of SMW construction method pile and Larsen steel sheet pile and construction method - Google Patents

Abstract

The invention provides a connection device and a construction method for the joint position of an SMW construction method pile and a Larsen steel sheet pile, and relates to the technical field of foundation pit support. The device includes a construction method pile connection plate and a steel sheet pile connection plate, the end of the construction method pile connection plate is fixedly connected with one end of the steel sheet pile connection plate, and the other end of the steel sheet pile connection plate is bent to form a slot structure. The connection plate of the construction method pile is vertically extended into the cement mixing pile of the SMW construction method pile system, and the slot on the connection plate of the steel sheet pile is clamped with the end of the Larsen steel sheet pile. The device has simple structure and convenient operation, can quickly realize the connection between the steel sheet pile and the construction method pile, effectively solve the problems of water seepage, quicksand and quick mud at the joint position between the steel sheet pile and the SMW construction method pile, and ensures the construction quality of the supporting pile. , improve the safety of the foundation pit. At the same time, the manual use for dealing with leakage problems is reduced, the work efficiency is improved, and good economic and social benefits are created.

Description

Connection device and construction method of joint position of SMW construction method pile and Larsen steel sheet pile

technical field

The invention relates to the technical field of foundation pit support, in particular to a connection device and a construction method for the joint position of an SMW construction method pile and a Larsen steel sheet pile.

Background technique

SMW construction method piles and Larsen steel sheet piles have the characteristics of green environmental protection, fast construction speed and low construction cost, and are widely used in bridge cofferdam construction, large-scale pipeline laying, and temporary trench excavation for soil, water and sand retention. And foundation pit support and other projects. In traditional foundation pit support engineering, steel sheet piles are often used in sections with SMW construction method piles. Construction method piles are mostly used for deep foundation pits, and steel sheet piles are mostly used for shallow foundation pits. However, because the two types of supporting piles cannot be effectively and tightly connected, water seepage and mud flow often occur at the joint of the construction method pile and the steel sheet pile, which adversely affects the safety of the foundation pit and the construction of other processes in the foundation pit. Therefore, how to deal with the joint between the SMW construction method pile support system and the Larsen steel sheet pile support system has become a major problem in foundation pit support engineering.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a connection device and a construction method for the joint position of the SMW construction method pile and the Larsen steel sheet pile, so as to solve the above problems.

Based on the above purpose, the present invention provides a connection device for the joint position of SMW construction method pile and Larsen steel sheet pile, including: construction method pile connection plate and steel sheet pile connection plate; One end is fixedly connected, and the other end of the steel sheet pile connecting plate is bent to form a slot structure; the construction method pile connecting plate extends vertically into the cement mixing pile of the SMW construction method pile system, and the slot on the steel sheet pile connecting plate is connected to the Larsen steel plate. The end of the pile is snapped.

Further, the angle between the pile connecting plate and the steel sheet pile connecting plate is 135 degrees; it is suitable for the structure of the steel sheet pile.

Further, the construction method pile connecting plate is a rectangular steel plate; it is used to insert into the cement mixing pile to ensure the stability of the supporting structure.

The construction method of the joint position of the SMW construction method pile and the Larsen steel sheet pile is carried out according to the following steps:

S1. Carry out the construction of the construction method pile support wall in the SMW construction method pile support system of the foundation pit;

S2. When the cement mixing pile of the SMW construction method pile supporting system is not completely hardened, connect the connecting device to the end of the SMW construction method pile supporting system, and insert the construction method pile connecting plate on the connecting device into the cement mixing pile;

S3. Carry out the construction of the steel sheet pile support wall in the Larsen steel sheet pile support system of the foundation pit, and hook the end of the steel sheet pile connecting plate on the connecting device to the end of the Larsen steel sheet pile.

Further, the specific process of S1 is carried out according to the following steps:

S11. Open a construction method pile trench outside the foundation pit;

S12. Construct cement mixing piles in the construction method pile trench;

S13. Insert a profiled steel frame into the cement mixing pile.

Further, in S3, the construction of the steel sheet pile supporting wall in the Larsen steel sheet pile supporting system of the foundation pit is carried out according to the following steps:

S31. Open a steel sheet pile groove on the outside of the foundation pit;

S32, inserting a Larsen steel sheet pile into the steel sheet pile groove.

Compared with the prior art, the beneficial effect of the present invention is: using the device to connect the steel sheet pile and the construction method pile, inserting the construction method pile connecting plate into the cement mixing pile, and then connecting the end of the steel sheet pile connecting plate to the Larsen steel sheet pile. The ends are hooked together to complete the connection between the two support systems. The device has simple structure and convenient operation, can quickly realize the connection between the steel sheet pile and the construction method pile, effectively solve the problems of water seepage, quicksand and quick mud at the joint position between the steel sheet pile and the SMW construction method pile, and ensures the construction quality of the supporting pile. , which improves the safety of the foundation pit. At the same time, the manual use for dealing with leakage problems is reduced, the work efficiency is improved, and good economic and social benefits are created.

Description of drawings

FIG. 1 is a schematic diagram of a connection device for a joint position of an SMW construction method pile and a Larsen steel sheet pile provided by an embodiment of the present invention;

Fig. 2 is the top view of the connection device of the joint position of the SMW construction method pile and the Larsen steel sheet pile provided by the embodiment of the present invention;

3 is a schematic diagram of the SMW construction method pile construction of the connection device at the joint position of the SMW construction method pile and the Larsen steel sheet pile provided by the embodiment of the present invention;

4 is a schematic diagram of the installation of the construction method pile connecting plate of the connection device at the joint position of the SMW construction method pile and the Larsen steel sheet pile provided by the embodiment of the present invention;

Fig. 5 is the installation schematic diagram of the connection device at the joint position of the SMW construction method pile and the Larsen steel sheet pile provided by the embodiment of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5 .

Description of the drawings: 1. Construction method pile connecting plate; 2. Steel sheet pile connecting plate; 3. Larsen steel sheet pile; 4. Cement mixing pile; 5. Profiled steel frame.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments.

As shown in FIG. 1 , a connection device for the joint position of the SMW construction method pile and the Larsen steel sheet pile proposed by the present invention is composed of a construction method pile connecting plate 1 and a steel sheet pile connecting plate 2 and the like. As shown in Figure 2, the construction method pile connecting plate 1 is a rectangular steel plate, the end of the construction method pile connecting plate 1 is fixedly connected to one end of the steel sheet pile connecting plate 2, and the other end of the steel sheet pile connecting plate 2 is bent to form a slot structure. The construction method pile connecting plate 1 is vertically extended into the cement mixing pile 4 of the SMW construction method pile system.

In use, the construction method pile connecting plate 1 is made of steel plates, and the size of the construction method pile connecting plate 1 is set to be 9 to 12 m in length, 0.3 m in width, and 4 mm in thickness. The steel sheet pile connecting plate 2 is made of steel sheets. The size of the steel sheet pile connecting plate 2 is set to be 9 to 12 m long, 0.2 m wide, and 4 mm thick. The slot at the end of the steel sheet pile connecting plate 2 is 3 cm high and 3 cm wide. The construction method pile connecting plate 1 and the steel sheet pile connecting plate 2 are welded together to form a connection device, which is used for the connection of the joint position between the SMW construction method pile and the Larsen steel sheet pile 3 .

The construction method of the joint position of the SMW construction method pile and the Larsen steel sheet pile is carried out according to the following steps:

S1. Carry out the construction of the construction method pile supporting wall in the SMW construction method pile support system of the foundation pit, which specifically includes the following steps:

S11. Open construction method pile trenches at positions outside the foundation pit where SMW construction method piles need to be used for support.

S12. Use a drilling mixer to construct the cement mixing pile 4 in the construction method pile groove, and fully mix the cement and soil evenly.

S13 , as shown in FIG. 3 , insert the shaped steel frame 5 into the cement mixing pile 4 .

S2. When the cement mixing pile 4 of the SMW construction method pile supporting system is not completely hardened, as shown in Figure 4, connect the connecting device to the end of the SMW construction method pile supporting system, and insert the construction method pile connecting plate 1 on the connecting device. to the cement mixing pile 4.

S3, carry out the construction of the steel sheet pile support wall in the Larsen steel sheet pile 3 support system of the foundation pit, which specifically includes the following steps;

S31, opening a steel sheet pile groove on the outside of the foundation pit.

S32. As shown in Figure 5, insert the Larsen steel sheet pile 3 into the steel sheet pile groove, and hook the end of the steel sheet pile connecting plate 2 on the connecting device to the end of the Larsen steel sheet pile 3, as shown in Figure 6 The connection between the SMW construction method pile and the Larsen steel sheet pile 3 is completed. All joints between SMW piles and Larsen steel sheet piles 3 can be connected by this device, which effectively solves the problems of water seepage, quicksand and flowing mud at the joints between steel sheet piles and SMW piles, and ensures the support of the supporting piles. The construction quality is improved, and the safety of the foundation pit is improved.

Embodiments of the present invention are intended to cover all such alternatives, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A connecting device for joint positions of SMW construction method piles and Larsen steel plate piles comprises: a construction method pile connecting plate and a steel sheet pile connecting plate; it is characterized in that the preparation method is characterized in that,

the end part of the pile connecting plate in the construction method is fixedly connected with one end of the steel sheet pile connecting plate, and the other end of the steel sheet pile connecting plate is bent to form a clamping groove structure; the construction method pile connecting plate vertically extends into a cement mixing pile of the SMW construction method pile system, and a clamping groove in the steel sheet pile connecting plate is clamped with the end part of the Larsen steel sheet pile.

2. The apparatus of claim 1, wherein the construction method pile connecting plate and the steel pile connecting plate form an angle of 135 degrees with each other.

3. The connecting device for a joint position of an SMW construction method pile and a Larsen steel plate pile as claimed in claim 1, wherein the construction method pile connecting plate is a rectangular steel plate.

4. A construction method of a joint position of a SMW method pile and a larsen steel sheet pile using the connecting device of a joint position of a SMW method pile and a larsen steel sheet pile according to any one of claims 1 to 3, comprising the steps of:

s1, constructing a construction method pile supporting wall in the SMW construction method pile supporting system of the foundation pit;

s2, when a cement mixing pile of the SMW-method pile support system is not completely hardened, connecting a connecting device to the end of the SMW-method pile support system, and inserting a construction-method pile connecting plate on the connecting device into the cement mixing pile;

and S3, constructing a steel sheet pile supporting wall in the Larsen steel sheet pile supporting system of the foundation pit, and hooking the end part of the steel sheet pile connecting plate on the connecting device at the end part of the Larsen steel sheet pile.

5. The SMW construction method pile and Larsen steel sheet pile joint position construction method according to claim 4, wherein the specific process of S1 is performed as follows:

s11, forming a pile groove of the construction method on the outer side of the foundation pit;

s12, constructing a cement mixing pile in the pile groove of the construction method;

and S13, inserting a steel skeleton into the cement mixing pile.

6. The construction method of the joint position of the SMW construction method pile and the Larsen steel sheet pile according to claim 4, wherein the construction of the steel sheet pile supporting wall in the Larsen steel sheet pile supporting system of the foundation pit in S3 is carried out according to the following steps:

s31, forming a steel sheet pile groove on the outer side of the foundation pit;

and S32, inserting Larsen steel sheet piles into the steel sheet pile grooves.

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