CN205012352U - Sheet pile supporting construction with stagnant water function - Google Patents

Abstract

The utility model discloses a sheet pile supporting structure with water-stopping function, which is used for soil-retaining and water-stopping on the peripheral wall of a foundation pit, and comprises sheet piles arranged at intervals along the positioning line of the foundation pit support, and the two sides of the sheet piles are All have grooves, between the grooves of adjacent sheet piles there is a concrete strapping board for retaining soil and water, the two ends of the concrete strapping board are embedded in the groove, and the connection between the two ends of the concrete strapping board and the groove is set There are rubber waterstops for waterproofing. The utility model adopts prefabricated construction, which is convenient and quick. The concrete board plays the role of retaining soil and water, and the rubber waterstop plays a waterproof and sealing role. The integrity of the support structure can effectively improve the rigidity of the support structure, and finally realize the safety and stability of the foundation pit project, especially suitable for relatively regular small and medium-sized foundation pit projects.

Description

Sheet pile support structure with waterproof function

technical field

The utility model relates to the technical field of construction engineering, in particular to a sheet pile support structure with a water-stop function.

Background technique

In recent years, with the rise of high-rise buildings, the scale of foundation pit engineering has also become larger and larger. At the same time, with the rapid development of underground transportation and the continuous construction of underground shopping malls and municipal facilities, simple grading and excavation can no longer meet the engineering reality, and various forms of enclosure structures have followed. The core issue in the foundation pit engineering is the rational design of the enclosure system. The system should not only play the role of retaining soil, but also prevent water and soil loss outside the foundation pit, so that the ground settlement and horizontal displacement around the foundation pit can be controlled within the allowable range. At present, prefabricated sheet piles are mostly used for foundation pit support in projects. Due to the soil and water retaining effect of the support structure, the pile spacing is small, the amount of material used is large, and the lifting capacity of a single hoisting is relatively heavy. High standard.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies in the prior art, to provide a sheet pile support structure that can make full use of the support stiffness, enhance the stability of the foundation pit, have a good waterproof effect and have a water-stop function.

The technical scheme adopted by the utility model to solve the technical problem is: a sheet pile support structure with water-stop function, which is used for retaining soil and water-stop on the surrounding wall of the foundation pit, including plates arranged at intervals along the foundation pit support positioning line piles, the two sides of the sheet piles have grooves, the grooves of adjacent sheet piles are provided with concrete lapping boards for retaining soil and water, the two ends of the concrete lapping boards are embedded in the grooves, and the concrete lapping boards There is a rubber waterstop for waterproofing at the connection between the two ends of the board and the groove.

Preferably, the grooves are in the shape of square strips.

Preferably, the depth of the sheet pile extending into the soil layer at the bottom of the foundation pit is 50% to 80% of the depth of the foundation pit.

The depth of the rubber waterstop extending into the soil layer at the bottom of the foundation pit is 10% of the depth of the foundation pit.

The beneficial effects of the utility model are: the utility model adopts assembly construction, which is convenient and fast, and has strong engineering practicability. The distance between the sheet piles can be appropriately increased to make full use of the rigidity of the support structure to ensure the integrity of the support structure and effectively improve the safety and stability of the foundation pit project, especially suitable for relatively regular small and medium-sized foundation pit projects.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the construction facade structure schematic diagram of the utility model.

Fig. 2 is a schematic plan view of the present invention.

In the figure 1. Sheet pile 2. Groove 3. Concrete board 4. Rubber waterstop 5. Foundation pit

detailed description

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

As shown in Figure 1 and Figure 2, a sheet pile support structure with water-stopping function is used for retaining and water-stopping the 5 surrounding walls of the foundation pit with an effective depth less than or equal to 10m, including the distance along the 5 support positioning lines of the foundation pit Arranged sheet piles 1, both sides of the sheet piles 1 have square strip-shaped grooves 2, between the grooves 2 of adjacent sheet piles 1, there are concrete lapping boards 3 for retaining soil and water. Both ends of the board 3 are embedded in the groove 2, and a rubber waterstop 4 for waterproofing is provided at the connection between the two ends of the board 3 and the groove 2.

Wherein the depth of sheet pile 1 extending into the bottom soil layer of foundation pit 5 is 80% of the depth of foundation pit 5; the depth of rubber waterstop 4 extending into the bottom soil layer of foundation pit 5 is 10% of the depth of foundation pit 5.

The construction steps for foundation pit support using the above-mentioned sheet pile support structure with water-stop function are as follows:

a. According to the support design parameters of foundation pit 5, prefabricate or purchase sheet pile 1 and concrete lap slab 3;

b. Embed rubber waterstop 4 along the inner peripheral wall of groove 2 of sheet pile 1;

c. Along the 5 support positioning lines of the foundation pit, three-axis stirring piles are used to form grooves;

d. Position through the guide groove, insert sheet piles 1 in sequence, and the grooves 2 of adjacent sheet piles 1 are opposite to each other;

e. Align the position of the groove 2 of the sheet pile 1, insert the concrete strap 3, and the top surface and both sides of the concrete strap 3 are closely attached to the rubber waterstop 4 respectively;

f. Repeat steps b to e above to continuously connect the sheet pile 1 and the concrete lap 3 to form a sheet pile support structure with a water-stop function.

In this embodiment, the sheet pile 1 is made of reinforced concrete, the depth of the foundation pit 5 is 10m, the depth of the sheet pile 1 extending into the bottom soil layer of the foundation pit 5 is 8m, and the depth of the rubber waterstop 4 extending into the bottom soil layer of the foundation pit 5 1m.

The utility model adopts assembled construction, which is convenient and quick. The concrete board 3 plays the role of retaining soil and water, and the rubber waterstop 4 plays the role of waterproof sealing, and the distance between the sheet piles 1 can be appropriately increased, so that the foundation pit 5 The support form is extended from the conventional plane mode to the space mode, which strengthens the integrity of the support structure, effectively improves the stiffness of the support structure, and makes full use of the stiffness of the support structure to ensure the integrity of the support structure and effectively improve The safety and stability of the foundation pit 5 project is especially suitable for relatively regular small and medium-sized foundation pit 5 projects.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model. Equivalent changes or modifications made by the spirit of the present utility model shall be covered within the protection scope of the present utility model.

Claims (4)

1. one kind has the sheet pile supporting and protection structure of water stopping function, for the gear soil sealing of foundation ditch (5) perisporium, it is characterized in that: comprise along the spaced sheet pile of foundation ditch (5) supporting position line (1), described sheet pile (1) two sides all have groove (2), the concrete attachment strap (3) for keeping off native sealing is provided with between the groove (2) of adjacent sheet pile (1), the two ends of concrete attachment strap (3) embed in described groove (2), and concrete attachment strap (3) two ends and groove (2) junction are provided with the rubber fastening band (4) for waterproof.

2. the sheet pile supporting and protection structure with water stopping function according to claim 1, is characterized in that: described groove (2) is square ribbon.

3. the sheet pile supporting and protection structure with water stopping function according to claim 1, is characterized in that: described sheet pile (1) stretch into that foundation ditch (5) the bottom solum degree of depth is foundation ditch (5) degree of depth 50% ~ 80%.

4. the sheet pile supporting and protection structure with water stopping function according to claim 3, is characterized in that: described rubber fastening band (4) stretch into that foundation ditch (5) the bottom solum degree of depth is foundation ditch (5) degree of depth 10%.