Method for connecting adjacent basement pits

Abstract

The application discloses a basement connecting method for adjacent foundation pits, and the adjacent foundation pits are divided by row piles. The basement connecting method comprises the following steps: removing the part of the row pile which is higher than the elevation of the basement roof; connecting a crown beam to the top end of the row pile after the removal; drawing an inverted U-shaped contour line of a connecting opening for connecting two basements on the row pile; first, according to the horizontal line of the inverted U-shaped contour line, horizontally cutting the row pile, and then constructing a lintel at the position of the horizontal cutting; second, according to the two vertical lines of the inverted U-shaped contour line, vertically cutting the row pile at two positions, and then respectively constructing side columns at the positions of the two vertical cuttings, so that the two side columns are connected to the lintel; and removing the part of the row pile which is located within the range surrounded by the lintel and the two side columns, so as to form the connecting opening. Through the basement connecting method, the stability of the connecting opening is improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a method for connecting basements of adjacent foundation pits. Background Technology

[0002] Piling is a foundation pit support structure composed of piles arranged in a row of certain types. Piling can separate adjacent foundation pits. When adjacent foundation pits need to be connected, the traditional construction method is to directly chisel away from the piles, which can easily damage the overall structure and cause instability at the connection point. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for connecting basements of adjacent foundation pits, thereby improving the structural stability of the connection opening.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a method for connecting the basements of adjacent foundation pits, wherein adjacent foundation pits are separated by piles, and the connection method includes the following steps:

[0005] Remove the portion of the piles that is above the elevation of the basement roof slab;

[0006] Connect the capping beam to the top of the removed piles;

[0007] Draw an inverted U-shaped outline on the piles to form the connecting opening between the two basements;

[0008] First, following the horizontal line of the inverted U-shaped outline, make a horizontal cut on the pile while retaining the anchoring steel bars inside the pile, and then construct a lintel at the location of the horizontal cut.

[0009] Next, following the two vertical lines of the inverted U-shaped outline, vertical chisels are made at two locations on the pile, while retaining the anchoring steel bars inside the pile. Side columns are constructed at the two vertical chisel locations, so that both side columns are connected to the lintel.

[0010] The portion of the piles located within the area enclosed by the lintel and the two side columns is chiseled away to form the connecting opening.

[0011] A further improvement of the method for connecting basements of adjacent foundation pits in this invention is as follows:

[0012] When chiseling away the portion of the piles that is higher than the elevation of the basement roof slab, a certain length of anchoring steel bars should be reserved.

[0013] When connecting the capping beam to the top of the removed piles, the pre-reserved anchoring steel bars are anchored into the capping beam.

[0014] The basement communication method of adjacent foundation pits further improves that when the horizontal line according to the inverted U-shaped profile line is horizontally excavated on the pile row, a pile is excavated at each end, so that the bent beam extends out of the inverted U-shaped profile line.

[0015] The basement communication method of adjacent foundation pits further improves that when the vertical excavation position is constructed as a side column, waterproof paint is applied at the connection between the side column and the bent beam.

[0016] The basement communication method of adjacent foundation pits further improves that the inverted U-shaped profile line is located below the bent beam, and is 5-6 m away from the bent beam.

[0017] Compared with the prior art, the basement communication method of adjacent foundation pits has the following advantages:

[0018] 1. By pouring a new bent beam at the top of the basement, it is ensured that the pile row at the top of the horizontal excavation position will not fall due to gravity when the horizontal excavation is performed.

[0019] 2. By arranging the bent beam and the side column, the edge of the communication port is reinforced, and the stability of the communication port is improved.

[0020] 3. By extending the bent beam out of the inverted U-shaped profile line, the stress stability of the bent beam is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 The new and old bent beam structure of the basement communication method of adjacent foundation pits.

[0023] Figure 2 The inverted U-shaped profile line of the communication port of the basement communication method of adjacent foundation pits.

[0024] Figure 3 The bent beam construction schematic diagram of the basement communication method of adjacent foundation pits.

[0025] Figure 4 The side column construction schematic diagram of the basement communication method of adjacent foundation pits.

[0026] Figure 5 The communication port construction completed structure schematic diagram of the basement communication method of adjacent foundation pits.

[0027] Fig. 1 basement roof; 2 old corbel; 3 corbel; 4 row pile; 5 inverted U-shaped contour line; 6 lintel; 7 side column. DETAILED DESCRIPTION

[0028] The present application is herein described, by way of example only, with the assistance of the accompanying drawings in which:

[0029] The basement connecting method of adjacent foundation pits of the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0030] Referring to Figures 1-5 , the basement connecting method of adjacent foundation pits, the adjacent foundation pits are divided by a row pile 4, and the connecting method comprises the steps of:

[0031] S1: chiseling off the part of the row pile 4 above the elevation of the basement roof 1;

[0032] S2: connecting a corbel 3 to the top end of the chiseled row pile 4;

[0033] S3: drawing an inverted U-shaped contour line 5 for the connecting port of the two basements on the row pile 4;

[0034] S4: first chiseling horizontally on the row pile 4 according to the horizontal line of the inverted U-shaped contour line 5 and retaining the anchoring steel bars in the row pile 4, and constructing a lintel 6 at the position of the horizontal chiseling;

[0035] S5: then chiseling vertically at two positions on the row pile 4 according to the two vertical lines of the inverted U-shaped contour line 5 and retaining the anchoring steel bars in the row pile 4, and constructing side columns 7 at the positions of the vertical chiseling, respectively, so that the two side columns 7 are both connected to the lintel 6;

[0036] S6: chiseling off the part of the row pile 4 within the range surrounded by the lintel 6 and the two side columns 7 to form the connecting port.

[0037] Specifically, when chiseling off the part of the row pile 4 above the elevation of the basement roof 1, the old corbel 2 at the top of the row pile 4 is also chiseled off.

[0038] Preferably, when chiseling off the part of the row pile 4 above the elevation of the basement roof 1, a certain length of anchoring steel bars is reserved;

[0039] When connecting the corbel 3 to the top end of the chiseled row pile 4, the reserved anchoring steel bars are anchored into the corbel 3.

[0040] By connecting the crown beam 3 at the top end of the row piles 4 after being chiseled, it is ensured that the row piles 4 at the top of the transversely chiseled position will not fall due to self-weight when subsequent transverse chiseling is performed. In addition, by anchoring the reserved anchor steel into the crown beam 3, the connection strength is strengthened.

[0041] Preferably, when transverse chiseling is performed on the row piles 4 according to the horizontal line of the inverted U-shaped profile line 5, a pile is chiseled at each end, so that the bent cap 6 extends out of the inverted U-shaped profile line 5.

[0042] Specifically, the two ends of the bent cap 6 extending out of the inverted U-shaped profile line 5 are embedded in piles.

[0043] By extending the bent cap 6 out of the inverted U-shaped profile line 5, the stress stability of the bent cap 6 is enhanced.

[0044] Preferably, when the side columns 7 are constructed at the positions of the two vertical chiseling, waterproof paint is applied at the connection between the side column 7 and the bent cap 6.

[0045] Specifically, a water stop steel plate is further connected at the connection between the side column 7 and the bent cap 6, and the opening of the water stop steel plate faces the opposite outer side of the communication opening.

[0046] By setting the water stop steel plate and the waterproof paint, the waterproof capability of the joint between the bent cap 6 and the side column 7 is improved, so as to avoid water seepage from the joint into the communication opening.

[0047] Preferably, the inverted U-shaped profile line 5 is located below the bent cap 6, and is about 5m-6m away from the crown beam 3.

[0048] It should be noted that the structure, proportion, size, etc. shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and purpose that can be achieved by the present application, should still fall within the scope of the disclosed technology. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application. Changes or adjustments of relative relationship without substantial changes in technical content are also considered as the scope of the present application.

[0049] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above disclosed technical contents to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not depart from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A method for connecting basements of adjacent foundation pits, wherein adjacent foundation pits are separated by a row of piles, characterized in that, The connectivity method includes the following steps: Remove the portion of the piles that is higher than the elevation of the basement roof slab, and leave a certain length of anchoring steel bars when removing the portion of the piles that is higher than the elevation of the basement roof slab. A capping beam is connected to the top of the removed piles. When connecting the capping beam to the top of the removed piles, the pre-reserved anchoring steel bars are anchored into the capping beam. Draw an inverted U-shaped outline on the piles to form the connecting opening between the two basements; First, following the horizontal line of the inverted U-shaped outline, make a horizontal cut on the pile while retaining the anchoring steel bars inside the pile, and then construct a lintel at the location of the horizontal cut. Next, following the two vertical lines of the inverted U-shaped outline, vertical chisels are made at two locations on the pile, while retaining the anchoring steel bars inside the pile. Side columns are constructed at the two vertical chisel locations, so that both side columns are connected to the lintel. The portion of the piles located within the area enclosed by the lintel and the two side columns is chiseled away to form the connecting opening.

2. The method for connecting basements of adjacent foundation pits as described in claim 1, characterized in that, When making transverse excavations on the piles according to the horizontal line of the inverted U-shaped outline, an additional pile is excavated at each end, so that the lintel extends out of the inverted U-shaped outline.

3. The method for connecting basements of adjacent foundation pits as described in claim 1, characterized in that, When constructing the side columns at the two vertically excavated locations, apply waterproof coating to the connection between the side columns and the lintel.

4. The method for connecting basements of adjacent foundation pits as described in claim 1, characterized in that, The inverted U-shaped outline is located below the lintel and is 5 m to 6 m away from the cap beam.

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