CN215715342U

CN215715342U - Supporting structure with prestressing force pressure components

Info

Publication number: CN215715342U
Application number: CN202120385283.1U
Authority: CN
Inventors: 竹相; 胡琦; 徐晓兵; 黄星迪; 黄天明; 王涛; 朱海娣; 方华建; 李健平; 娄泽峰; 邓以亮
Original assignee: Dongtong Geotechnical Science And Technology Inc
Current assignee: Dongtong Geotechnical Science And Technology Inc
Priority date: 2021-02-21
Filing date: 2021-02-21
Publication date: 2022-02-01
Anticipated expiration: 2031-02-21

Abstract

The application provides a bearing structure with prestressing force pressurization subassembly, through setting up first tie-beam, the second tie-beam, reinforcement connection spare and the prestressing force pressurization subassembly of setting between first tie-beam and second tie-beam, prestressing force pressurization subassembly is including keeping power device and the mutual first bracing piece and the second bracing piece that props mutually, connect between the one end of first bracing piece and second bracing piece and keep power device, the other end of first bracing piece and second bracing piece is connected with first tie-beam and second tie-beam respectively, and the junction does not be equipped with reinforcement connection spare and is used for strengthening the connection between bracing piece and the tie-beam, thereby bearing structure's stress loss has been reduced, tie-beam to the bearing capacity of foundation ditch has been guaranteed, and foundation ditch system's safety and stability has been guaranteed, construction process has been simplified, construction cost is reduced.

Description

Supporting structure with prestressing force pressure components

Technical Field

The utility model relates to the field of building foundation pit support, in particular to a supporting structure with a prestress pressurizing assembly.

Background

Along with the continuous development of urban underground spaces, the burial depth of basements is continuously increased. The areas around the deep foundation pits are often close to subways, houses and roads. The surrounding environment puts high requirements on the deformation control of the foundation pit. In order to ensure the safety of the underground structure and the surrounding environment of the foundation pit, measures such as supporting and reinforcing need to be adopted on the side wall and around the foundation pit. At present, a foundation pit supporting system generally comprises a foundation pit supporting peripheral guard pile or retaining wall, a purlin beam in the guard pile and an inner supporting beam between the purlin beams so as to form foundation pit supporting.

The support beam is one of important supporting structures in a foundation pit supporting system. In order to ensure that the support beam can reliably bear the pressure from the soil outside the foundation pit, a jack is usually used to apply a pre-pressure on the support beam, thereby effectively controlling the displacement of the foundation pit. In order to apply pre-tightening force to the jack in the actual construction process, a pre-stressed compression member is usually arranged at the end part of the supporting beam. The pre-stressed compression member has two support members that support each other. In the actual construction process, the jack can be placed between the two supporting members to apply pretightening force; when the jack applies pretightening force, the two supporting members are not vertically supported, so that the supporting members connected with the supporting beam sink under the action of the gravity of the supporting beam, the height difference of the two supporting members of the prestressed compression member is inconsistent, the axial force of the whole composite supporting beam is not on the same horizontal line, and the supporting capability of the supporting beam on the foundation pit is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a supporting structure with a prestress pressurizing assembly, which is simple in structure and convenient to use.

According to the application, a supporting structure with a prestress pressurizing assembly is provided, which comprises a first connecting beam, a second connecting beam, a reinforcing connecting piece and the prestress pressurizing assembly arranged between the first connecting beam and the second connecting beam, wherein the prestress pressurizing assembly comprises a force-keeping device and a first supporting part and a second supporting part which are oppositely supported with each other, the force-keeping device is connected between one ends of the first supporting part and the second supporting part, the other ends of the first supporting part and the second supporting part are respectively connected with the first connecting beam and the second connecting beam, and the joint is respectively provided with the reinforcing connecting piece for reinforcing the connection between the supporting part and the connecting beam. The force-retaining device is arranged in the middle of the two connecting beams, so that the connecting beams can be reliably supported between the two opposite sides of the winged sandal beams, and a powerful support is provided for a foundation pit supporting system; and has simple to operate, characteristics that the installation effectiveness is high.

Furthermore, the force protection device comprises a jack and a force protection box, the jack and the force protection box are arranged between the first connecting beam and the second connecting beam at intervals, and the first connecting beam and the second connecting beam are placed into the force protection box to apply prestress after being tensioned by the jack. The prestress is applied after the tensioning by the jacks, so that the prestress can be unloaded after the support component is unfolded by the jacks.

Furthermore, the force-keeping device also comprises through holes which are arranged along the length extension of the first connecting beam and the second connecting beam, and first bolts which penetrate through the through holes and are connected with the first connecting beam and the second connecting beam.

Furthermore, the reinforced connecting piece is arranged on the connecting beam and is respectively connected with the connecting beam in the supporting part, the reinforced connecting piece comprises a first reinforced connecting piece and a second reinforced connecting piece, the first supporting part and the first connecting beam are respectively connected with the first reinforced connecting piece through a second bolt, and the second supporting part and the second connecting beam are respectively connected with the second reinforced connecting piece through a third bolt.

Furthermore, the first connecting beam is formed by connecting first H-shaped steel, one end of the first H-shaped steel is connected with the first reinforcing connecting piece, the second connecting beam is formed by connecting second H-shaped steel, and one end of the second H-shaped steel is connected with the second reinforcing connecting piece.

Further, the first support member is connected with the first H-shaped steel through a fourth bolt.

Further, the second support member is connected with the second H-shaped steel through a fifth bolt.

Further, the first support member is composed of a third H-section steel, and the second support member is composed of a fourth H-section steel.

Further, still include the crossbeam, be provided with the first crossbeam that plays the reinforcing effect between the first tie-beam, be provided with the second crossbeam that plays the reinforcing effect between the second tie-beam. The number of the connecting beams on the two sides of the force-keeping device can be set according to specific conditions, the connecting beams can be fixed through the cross beams, and the reliability of the whole body is enhanced.

According to the technical scheme, the first connecting beam, the second connecting beam, the reinforcing connecting piece and the prestress pressurizing assembly arranged between the first connecting beam and the second connecting beam are arranged, so that the stress loss of a supporting structure is reduced, the bearing capacity of the supporting beam on a foundation pit is ensured, the safety and the stability of a foundation pit system are ensured, the construction process is simplified, and the construction cost is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic diagram of the overall structure of a support structure having a pre-stressed compression assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of a portion of a connection structure of a support structure having a pre-stressed compression assembly according to an embodiment of the present application;

FIG. 3 is an enlarged view of a portion A of a support structure having a pre-stressed compression assembly according to an embodiment of the present application.

Reference numerals: 1-a first connecting beam; 11-first H-section steel; 2-reinforcing the connecting piece; 3-a pre-stressed compression assembly; 4-a second connecting beam; 41-second H-shaped steel; 5-a first beam; 6-a second beam; 31-a first support member; 311-third H-shaped steel; 32-a force retention device; 321-a force-keeping box; 322-a jack; 33-a second support member; 331-fourth H-section steel; 51-a first bolt; 52-a second bolt; 53-third bolt; 54-a fourth bolt; 55-fifth bolt.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

A support structure having a pre-stressed pressing assembly according to the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 to 3, a supporting structure with a pre-stressed pressing assembly according to an embodiment of the present invention is shown.

As shown in fig. 1, according to the present application, there is provided a support structure with a prestressed compression assembly, comprising a first connection beam 1, a second connection beam 4, a reinforcing connection member 2 and a prestressed compression assembly 3 disposed between the first connection beam 1 and the second connection beam 4, wherein the prestressed compression assembly 3 comprises a force-maintaining device 32 and a first support member 31 and a second support member 33 which are supported opposite to each other, the force-maintaining device 32 is connected between one ends of the first support member 31 and the second support member 33, the other ends of the first support member 31 and the second support member 33 are respectively connected with the first connection beam 1 and the second connection beam 4, and the reinforcing connection member 2 is disposed at the connection position for reinforcing the connection between the connection beam and the support member. Through set up the power protection device 32 in the middle part at two tie-beams not only can be with the tie-beam reliable to propping between the winged sandalwood roof beam of relative both sides, for foundation ditch braced system provides strong support, have simple to operate moreover, characteristics that the installation effectiveness is high.

In the specific embodiment, the device further comprises cross beams, wherein a first cross beam for reinforcing is arranged between the first connecting beams 1, and a second cross beam for reinforcing is arranged between the second connecting beams 4. The number of the connecting beams on the two sides of the force-keeping device 32 can be set according to specific conditions, the connecting beams can be fixed through the cross beams, and the reliability of the whole body is enhanced.

In a specific embodiment, the force maintaining device 32 includes a jack 322 and a force maintaining box 321, the jack 322 and the force maintaining box 321 are arranged at intervals between the first connecting beam 1 and the second connecting beam 4, and the first connecting beam 1 and the second connecting beam 4 are placed into the force maintaining box 321 to exert prestress after being tensioned by the jack 322. The jack 322 is used for tensioning and then applying prestress, so that the jack 322 is used for opening the supporting component and then unloading the prestress.

In a specific embodiment, as shown in fig. 2, the force retention device further comprises through holes arranged in an array extending along the length of the first connecting beam and the second connecting beam, and a first bolt 51 connected with the first connecting beam and the second connecting beam through the through holes.

The first connecting beam 1 is formed by connecting first H-shaped steel 11, one end of the first H-shaped steel 11 is connected with a first reinforcing connecting piece, the second connecting beam 4 is formed by connecting second H-shaped steel 41, and one end of the second H-shaped steel 41 is connected with a second reinforcing connecting piece.

In a specific embodiment, as shown in fig. 3, the reinforcing connecting member 2 is disposed on the connecting beam and connected to the supporting members respectively, the reinforcing connecting member 2 includes a first reinforcing connecting member and a second reinforcing connecting member, the first supporting member 31 and the first connecting beam 1 are connected to the first reinforcing connecting member respectively by a second bolt 52, and the second supporting member 33 and the second connecting beam 4 are connected to the second reinforcing connecting member respectively by a third bolt 53.

The first support member 31 and the first H-section steel 11 are connected by a fourth bolt 54, the second support member 33 and the second H-section steel 41 are connected by a fifth bolt 55, the first support member 31 is formed of a third H-section steel, and the second support member 33 is formed of a fourth H-section steel.

The practical specific application of the support structure with the prestress compression assembly 3 is as follows:

firstly, enclose the purlin is installed to the inboard of foundation ditch, the H type passes through the bolted connection lock solid and constitutes first tie-beam 1 and second tie-beam 4 respectively, first tie-beam 1 and second tie-beam 4 can be including a plurality of tie-beams respectively, a plurality of tie-beam parallel arrangement, install rectangular crossbeam on a plurality of parallel arrangement's connection, strengthen its fastness, first tie-beam 1 and second tie-beam 4 enclose the purlin respectively, place prestressing force pressure subassembly 3 between first tie-beam 1 and second tie-beam 4 after that.

Next, when the prestress pressing assembly 3 is installed, one end of the first supporting member 31 is first locked with the first connecting beam 1 through a bolt, one end of the second supporting member 33 is locked with the second connecting beam 4, the reinforcing connecting member 2 is installed at the joint of the supporting member and the connecting beam, the reinforcing connecting member 2 is placed on the connecting beam and locked with the connecting beam through a bolt, one end of the reinforcing connecting member 2 close to the supporting member is locked with the supporting member through a bolt, so that the connecting beam and the supporting member are locked, then the connecting bolt at the other ends of the first supporting member 31 and the second supporting member 33 is loosened, and the jack 322 is placed between the first supporting member 31 and the second supporting member 33 and is used for expanding the first supporting member 31 and the second supporting member 33.

Finally, the prestress is released firstly before the dismantling, the reinforcing connecting piece 2 is dismantled firstly, when the prestress is released, the pressure piece is jacked open by the jack 322, then the force-retaining box 321 is removed, then the jack 322 is released, the components are dismantled in blocks, and the dismantled components are piled according to the specified positions. The prestressed steel used should be quality checked before installation when it is reused, preventing deformation and damage of the material during transfer.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A supporting structure with a prestressed press assembly, characterized by comprising a first connecting beam (1), a second connecting beam (4), a reinforcing connecting piece (2) and a prestressed press assembly (3) arranged between the first connecting beam (1) and the second connecting beam (4), the prestress compression assembly (3) comprises a force-retaining device (32) and a first supporting part (31) and a second supporting part (33) which are oppositely supported, the force-retaining device (32) is connected between one ends of the first support part (31) and the second support part (33), the other ends of the first support member (31) and the second support member (33) are connected with the first connecting beam (1) and the second connecting beam (4) respectively, and the joints are respectively provided with the reinforced connecting pieces (2) for reinforcing the connection between the supporting parts and the connecting beams.

2. The support structure with prestressed pressure assembly according to claim 1, characterized in that said force-maintaining device (32) comprises a jack (322) and a force-maintaining box (321), said jack (322) and said force-maintaining box (321) being spaced apart between said first connecting beam (1) and said second connecting beam (4), said first connecting beam (1) and said second connecting beam (4) being prestressed by said jack (322) being placed into said force-maintaining box (321).

3. The support structure with prestressed reinforcement assembly of claim 2, characterized in that said force-retention means (32) further comprises through holes arranged in an array extending along the length of said first (1) and second (4) connection beams, and a first bolt (51) passing through the through holes to connect said first (1) and second (4) connection beams.

4. The support structure with prestressed press assembly as claimed in claim 1, characterized in that said reinforcing connectors (2) are provided on said connecting beams and connected to said support members respectively therewith, said reinforcing connectors (2) comprising a first reinforcing connector and a second reinforcing connector, said first support member (31) and said first connecting beam (1) being connected to said first reinforcing connector respectively by means of a second bolt (52), said second support member (33) and said second connecting beam (4) being connected to said second reinforcing connector respectively by means of a third bolt (53).

5. The support structure with prestressed press assembly according to claim 4, characterized in that said first connecting beam (1) is constituted by a first H-section steel (11) connected at one end thereof, said first H-section steel (11) being connected at one end thereof to said first reinforcing connecting member, said second connecting beam (4) is constituted by a second H-section steel (41) connected at one end thereof to said second reinforcing connecting member.

6. The support structure with prestressed pressure assembly as claimed in claim 5, characterized in that said first support member (31) and said first H-shaped steel (11) are connected by means of a fourth bolt (54).

7. The support structure with prestressed press assembly of claim 5, characterized in that said second support member (33) and said second H-shaped steel (41) are connected by a fifth bolt (55).

8. The support structure with prestressed press-assembly according to claim 1, characterized in that said first support member (31) is constituted by a third H-section steel (311) and said second support member (33) is constituted by a fourth H-section steel (331).

9. The support structure with prestressed press assembly according to claim 1, characterized in that it further comprises cross beams, between said first connecting beams (1) there are provided first cross beams (5) for reinforcement, between said second connecting beams (4) there are provided second cross beams (6) for reinforcement.