CN216379542U

CN216379542U - Deep sand bed foundation pit self-stabilizing double-row enclosure structure

Info

Publication number: CN216379542U
Application number: CN202121811574.9U
Authority: CN
Inventors: 旷海涛; 程允贵; 杨忠刚; 熊柯; 王启超; 王东; 赵暑阳; 李林; 陈龙; 许黔
Original assignee: China Railway No 2 Engineering Group Co Ltd; Shenzhen China Railway Second Bureau Engineering Co Ltd
Current assignee: China Railway No 2 Engineering Group Co Ltd; Shenzhen China Railway Second Bureau Engineering Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-04-26
Anticipated expiration: 2031-08-04

Abstract

The application relates to the technical field of foundation pit bracing, in particular to a deep sand layer foundation pit self-stabilizing double-row bracing structure, which comprises upright piles, wherein a filling groove is formed in the bottom of the peripheral wall of a foundation pit, one end of each upright pile is installed in the filling groove, a plurality of upright piles are arranged on the filling groove and form a row pile, a reinforcing layer for fixing the row pile is arranged in the middle of the filling groove, a reinforcing component is arranged on one side of the row pile close to the soil layer of the side wall of the foundation pit, a transverse connecting plate is detachably arranged on one side of the row pile far away from the soil layer of the side wall of the foundation pit, a supporting member is arranged in the middle of the foundation pit and is used for supporting two transverse connecting plates which are arranged on two sides of the foundation pit, a crown beam is fixed at the top of the row pile, and in order to improve the stability of the peripheral wall of the foundation pit, the deep sand layer foundation pit self-stabilizing double-row bracing structure is provided and can protect the original soil layer of the foundation pit, and can provide an environment for safe construction for workers.

Description

Deep sand bed foundation pit self-stabilizing double-row enclosure structure

Technical Field

The application relates to the technical field of foundation pit bracing, in particular to a self-stabilizing double-row bracing structure for a deep sand layer foundation pit.

Background

The foundation pit refers to an underground pit excavated for constructing a building foundation and a basement, and the foundation pit needs to be enclosed in the construction of underground facilities in order to stabilize the peripheral wall of the pit and ensure the environmental safety of the underground structure.

Common excavation supporting has soil nail to strut and pile anchor to strut, wherein, traditional soil nail is strutted and pile anchor struts all need earlier to drill the foundation ditch soil layer before the installation, again in soil nail or stock injection hole, utilize the concrete to fix soil nail or stock at last, thereby reach the purpose that improves foundation ditch perisporium stability, however, it can destroy the original structural stability of the soil body to a certain extent to drill on the soil body, still can increase the cost, the extension time limit for a project.

Disclosure of Invention

In order to improve the stability of foundation ditch perisporium, this application provides two envelope of deep sand bed foundation ditch self-stabilization formula, can protect original foundation ditch soil layer to and can provide the environment of safe construction for the staff.

The application provides a double envelope of deep sand bed foundation ditch self-stabilization formula adopts following technical scheme:

double envelope of deep sand bed foundation ditch self-stabilizing formula, including the stand pile, the bottom of foundation ditch perisporium has been seted up and has been filled the groove, the one end of stand pile is installed fill in the groove, fill the stand pile that is provided with a plurality of roots on the groove, a plurality of the stand pile forms the campshed, the middle part of filling the groove is provided with and is used for carrying out the back up coat fixed to the campshed, one side that the campshed is close to foundation ditch lateral wall soil layer is provided with the reinforcement component, the campshed is kept away from one side detachable and is provided with transverse connection board on foundation ditch lateral wall soil layer, the middle part of foundation ditch is provided with support piece, support piece is used for supporting just to two transverse connection boards of laying in the foundation ditch both sides, the top of campshed is fixed with the guan liang.

Through adopting above-mentioned technical scheme, the staff installs a plurality of stand piles in filling the groove, make it form the campshed, can fix the campshed through the back up coat, strengthen the unit mount and can improve the structural stability of enclosure in the campshed one side that is close to foundation ditch lateral wall soil layer, when the staff pours into concrete mortar to the campshed, cooperation between transverse connection board and the bracing piece provides the holding power for the campshed pours into concrete mortar, and offset partial pressure, thereby can reduce the campshed and take place the collapse phenomenon because the campshed stability is not enough and take place, in addition, it can strengthen the marginal stability in foundation ditch top to be fixed with the hat beam at the top of campshed.

Preferably, the upright post pile comprises a steel pipe pile and anchoring angle steels, the anchoring angle steels are symmetrically installed at one end of the steel pipe pile, and the steel pipe pile is partially fixed in the reinforcing layer and provided with the anchoring angle steels.

Through adopting above-mentioned technical scheme, the staff has anchor angle steel part to fix in the back up coat with the steel-pipe pile, and pour into the concrete mortar in the steel-pipe pile middle part, form the concrete column after waiting that the concrete mortar solidifies, can improve the stability of foundation ditch perisporium, and anchor angle steel directly fixes through the back up coat, the condition that the drilling inserted soil nail or stock has been reduced takes place, thereby can reduce the destruction to original foundation ditch soil layer structure, the setting up of anchor angle steel can provide the effect of bearing the tension when taking place to warp for the foundation ditch soil body, foundation ditch soil layer self intensity is not enough, and can reduce the emergence of concentrated stress, thereby can disperse the pressure that the building brought for the basic unit, the stability of foundation ditch perisporium has been strengthened to a certain extent.

Preferably, the reinforcing component is a reinforcing transverse bar, and the reinforcing transverse bar is welded and fixed with the row piles.

By adopting the technical scheme, the reinforced transverse rib has good tensile property and mechanical property, has a lower thermal expansion coefficient, is less cracked and corroded under the protection of a foundation pit soil layer, and effectively prolongs the service life of the enclosure.

Preferably, it is same on the campshed strengthen horizontal muscle has a plurality of, strengthen horizontal muscle evenly to be laid one side that the campshed is close to foundation ditch lateral wall soil layer.

By adopting the technical scheme, the reinforcing transverse ribs are uniformly distributed on one side of the row piles close to the soil layer of the side wall of the foundation pit, so that the pressure of the deformation of the soil body of the side wall of the foundation pit and the extrusion on the row piles can be dispersed, and the service life of the enclosure is prolonged to a certain extent.

Preferably, the cross section of the transverse connecting plate is U-shaped, and the supporting piece is clamped in the middle of the transverse connecting plate.

Through adopting above-mentioned technical scheme, the cross-section of transverse connection board is "U" type and makes support piece be difficult for dropping from transverse connection board, can provide sufficient holding power for the campshed when penetrating concrete mortar.

Preferably, a release agent is coated on the assembly part of the support member and the transverse connecting plate.

Through adopting above-mentioned technical scheme, the separant has good drawing of patterns performance, and after the construction was accomplished, the setting up of separant made support piece and transverse connection board can separate conveniently to, through retrieving support piece, transverse connection board, can practice thrift manufacturing cost.

Preferably, the reinforcing layer is a concrete mortar layer.

By adopting the technical scheme, the reinforcing layer is the concrete mortar layer and can stably install the row pile in the filling groove, so that the installation process of the row pile is simplified, and the installation efficiency of the enclosure is improved.

Preferably, the crown beam is a concrete crown beam.

By adopting the technical scheme, the concrete crown beam has good compressive strength, row piles arranged at the bottom of the crown beam are protected to a certain extent, and the service life of enclosure is prolonged.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when workers pour concrete mortar into the row piles, the transverse connecting plates and the supporting rods are matched to provide supporting force for the row piles to penetrate the concrete mortar, collapse caused by insufficient stability of the row piles can be reduced, and stability of the top edge of a foundation pit can be enhanced due to the arrangement of the crown beams;

2. the steel pipe pile is fixed in the reinforcing layer by the worker, concrete mortar is poured into the middle of the steel pipe pile, and a concrete column is formed after the concrete mortar is solidified, so that the stability of the peripheral wall of the foundation pit can be improved, the anchoring angle steel is directly fixed through the reinforcing layer, the situation that a drill hole is inserted into a soil nail or an anchor rod is reduced, the damage to the original foundation pit soil layer structure can be reduced, the anchoring angle steel can provide a tensile force bearing effect when the foundation pit soil body is deformed, the self-strength deficiency of the foundation pit soil layer is made up, the occurrence of concentrated stress can be reduced, the pressure brought to a base layer by a building can be dispersed, and the stability of the peripheral wall of the foundation pit is enhanced to a certain extent;

3. the setting up of separant makes support piece and transverse connection board can separate conveniently, and support piece, transverse connection board have the advantage of recycling to can practice thrift manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of a building envelope in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a stud pile in the embodiment of the present application.

Fig. 3 is a schematic view of the entire structure in the embodiment of the present application.

Description of reference numerals: 1. a foundation pit; 11. filling the groove; 2. pile arrangement; 21. a vertical column pile; 211. steel pipe piles; 212. anchoring angle steel; 3. a transverse connecting plate; 31. a support bar; 4. reinforcing the transverse ribs; 5. a crown beam; 6. and a reinforcing layer.

Detailed Description

In order to make the purpose, technical solution and advantages of the present application more clear, the present application is further described in detail below with reference to fig. 1-3 and the embodiments.

The embodiment of the application discloses double envelope of deep sand bed foundation ditch self-stabilization formula.

Referring to fig. 1 and 2, the double-row self-stabilizing enclosure structure for the deep sand foundation pit comprises a vertical column pile 21, wherein the vertical column pile 21 is installed at the side wall of the foundation pit 1, specifically, the vertical column pile 21 comprises a steel pipe pile 211 and anchoring angle steel 212, the steel pipe pile 211 and the anchoring angle steel 212 are both made of steel materials, and the anchoring angle steel 212 is symmetrically welded at the outer wall of one end of the steel pipe pile 211.

Filling grooves 11 are formed in the bottom of the peripheral wall of the foundation pit 1, the upright piles 21 are vertically inserted into the filling grooves 11, the number of the upright piles 21 in the same filling groove 11 depends on the situation, the row piles 2 can be formed by the upright piles 21 installed on the same filling groove 11, a reinforcing layer 6 for fixing the upright piles 21 can be formed by pouring concrete mortar into the filling groove 11, the concrete mortar does not pass through the steel pipe piles 211 with the anchoring angle steel 212, so that the connection between the row piles 2 and the bottom soil layer of the foundation pit 1 is more stable, the situation that soil nails or anchor rods are inserted into drilled holes is reduced, namely, the damage to the soil layer structure of the original foundation pit 1 can be reduced, and meanwhile, the pouring of the concrete mortar can reinforce the bottom of the foundation pit 1.

Because the end of the steel pipe pile 211 close to the filling groove 11 is the end with the anchor angle 212, the arrangement of the anchor angle 212 can improve the structure of the upright pile 21, and the anchor angle 212 can bear the action of tension when the soil body of the foundation pit 1 deforms by means of the interface bonding force and the friction force between the reinforcing layers 6.

In order to make the overall structure of campshed 2 more stable, be provided with in one side that campshed 2 is close to foundation ditch 1 lateral wall soil layer and strengthen horizontal muscle 4, the quantity of strengthening horizontal muscle 4 on same campshed 2 is decided according to the circumstances, strengthen horizontal muscle 4 and evenly lay in one side that campshed 2 is close to foundation ditch 1 lateral wall soil layer, it is mutually perpendicular with the extending direction of stand pile 21 to strengthen the extending direction of horizontal muscle 4, it is fixed mutually through the welding between horizontal muscle 4 and the campshed 2 to strengthen, the other end of strengthening horizontal muscle 4 then supports to press on foundation ditch 1 lateral wall soil layer.

Referring to fig. 1 and 3, one side of keeping away from foundation ditch 1 lateral wall soil layer at stand pile 21 is provided with transverse connection board 3, it is fixed mutually through bolted connection between transverse connection board 3 and the stand pile 21, transverse connection board 3 is "U" type in this application implementation, transverse connection board 3's extending direction is unanimous with the extending direction who strengthens transverse bar 4, transverse connection board 3's opening direction is outside to the outside, be provided with bracing piece 31 between two relative campshed 2, the middle part department of transverse connection board 3 of bracing piece 31 joint on two campshed 2, retrieve transverse connection board 3 and bracing piece 31 after accomplishing for the convenience of construction, position department of assembling mutually at transverse connection board 3 and bracing piece 31 is scribbled the isolating agent.

In order to improve the structural stability of the enclosure, concrete mortar is poured into the middle of the upright pile 21 by workers, the transverse connecting plate 3 and the supporting rod 31 are matched to provide supporting force for the row pile 2 to penetrate the concrete mortar and offset partial pressure, so that the phenomenon of collapse caused by insufficient stability of the row pile 2 when the row pile 2 is poured into the concrete mortar can be reduced, a concrete column can be formed after the concrete mortar is solidified in the row pile 2, and the stability of the peripheral wall of the foundation pit 1 can be improved.

In addition, be provided with guan liang 5 in the one end that anchor coat 6 was kept away from to campshed 2, in this application embodiment, guan liang 5 is concrete guanliang, and the bottom of guanliang 5 is fixed mutually with the campshed 2 top surface of 1 homonymy in foundation ditch, has consolidated the stability at 1 top edge in foundation ditch for 1 top edge in foundation ditch is difficult for taking place to collapse.

The implementation principle of the double envelope of deep sand bed foundation ditch self-stabilization formula of this application embodiment is:

the staff is earlier with a plurality of stand piles 21 vertical insert in filling groove 11, pour into concrete mortar in filling groove 11, make same stand pile 21 on filling groove 11 form campshed 2, will strengthen the welding of horizontal muscle 4 and be close to one side of foundation ditch 1 lateral wall soil layer at campshed 2, install transverse connection board 3 in one side that foundation ditch 1 lateral wall soil layer was kept away from to campshed 2, 31 joint bracing piece joint between two transverse connection board 3 of relative setting, then pour into concrete mortar at campshed 2 middle parts, hat roof beam 5 is installed on campshed 2 top surfaces, can improve the stability of 1 perisporium of foundation ditch.

The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. Deep sand bed foundation ditch is double envelope of self-stabilizing formula, its characterized in that, including upright post stake (21), the bottom of foundation ditch (1) perisporium has been seted up and has been filled groove (11), the one end of upright post stake (21) is installed fill in groove (11), fill and be provided with a plurality of upright post stakes (21) on groove (11), a plurality of upright post stake (21) form campshed (2), the middle part of filling groove (11) is provided with and is used for carrying out fixed back up coat (6) to campshed (2), one side that campshed (2) is close to foundation ditch (1) lateral wall soil layer is provided with the reinforcement component, one side that campshed (2) kept away from foundation ditch (1) lateral wall soil layer is detachable is provided with horizontal connecting plate (3), the middle part of foundation ditch (1) is provided with support piece, support piece is used for supporting just to laying two horizontal connecting plate (3) in foundation ditch (1) both sides, and a crown beam (5) is fixed at the top of the row pile (2).

2. The deep sand foundation pit self-stabilizing double-row building envelope structure as claimed in claim 1, wherein the vertical column pile (21) comprises a steel pipe pile (211) and anchoring angle steels (212), the anchoring angle steels (212) are symmetrically installed at one end of the steel pipe pile (211), and the steel pipe pile (211) with the anchoring angle steels (212) is partially fixed in the reinforcing layer (6).

3. The deep sand layer foundation pit self-stabilizing double-row building envelope structure of claim 1, characterized in that the reinforcing component is a reinforcing transverse bar (4), and the reinforcing transverse bar (4) is welded and fixed with the row piles (2).

4. The double-row self-stabilizing building envelope for the deep sand foundation pit as claimed in claim 3, wherein the same row pile (2) has a plurality of reinforcing transverse ribs (4), and the reinforcing transverse ribs (4) are uniformly distributed on one side of the row pile (2) close to the soil layer on the side wall of the foundation pit (1).

5. The self-stabilizing double-row building envelope of deep sand foundation pit according to claim 2, wherein the cross-section of the transverse connecting plate (3) is "U" shaped, and the support member is clamped in the middle of the transverse connecting plate (3).

6. The deep sand foundation pit self-stabilizing double-row building envelope structure as claimed in claim 5, wherein the assembling part of the support member and the transverse connecting plate (3) is coated with an isolating agent.

7. The deep sand foundation pit self-stabilizing double-row building envelope structure of claim 1, characterized in that the reinforcing layer (6) is a concrete mortar layer.

8. The deep sand foundation pit self-stabilizing double-row building envelope structure of claim 1, characterized in that the crown beam (5) is a concrete crown beam.