CN117286884A

CN117286884A - Pit supporting structure of pit outer transverse support

Info

Publication number: CN117286884A
Application number: CN202210633875.XA
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Asahi Co Ltd
Current assignee: Asahi Co Ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2023-12-26

Abstract

The disclosure provides a foundation pit supporting structure with a transverse support outside a pit, and a vertical blocking part; the connecting part at least comprises a first connecting part; the transverse supporting piece at least comprises a middle transverse supporting piece, the middle transverse supporting piece is arranged at a part between two ends of the first connecting part, and the middle transverse supporting piece applies a first positive pressure to the first connecting part; an inner support structure connected to the first connection portion, and through which a first positive pressure can be transmitted; and one end of the middle force application component is arranged on the middle transverse support piece, the other end of the middle force application component is arranged on the first connecting part, so that tension is applied to the first connecting part and/or the vertical blocking part through the middle force application component, and the tension applied by the middle force application component at least partially counteracts the force applied to the vertical blocking part by the soil around the foundation pit born by the vertical blocking part.

Description

Pit supporting structure of pit outer transverse support

Technical Field

The disclosure relates to a foundation pit supporting structure of a pit outer transverse support, and belongs to the technical field of buildings.

Background

In building construction or underground structure construction, open excavation work is generally performed on the ground to form a foundation pit. In the prior art, vertical piles are often arranged on the periphery of a foundation pit, and a foundation pit supporting structure with transverse supports is arranged in the pit to prevent collapse of soil on the periphery of the foundation pit.

Structurally, the foundation pit support of the current building mostly adopts vertical support piles and horizontal supports in pits or cable-stayed anchor rods to resist the thrust of soil outside the pits, the horizontal supports in the foundation pit have an obstacle effect on construction, the cost is high, and the horizontal supports still need to be removed after the basement construction is finished. Moreover, when the horizontal support is constructed, the manpower and material resources are extremely wasted, and the construction period is long.

The cable-stayed anchor rod is also a structure for resisting soil thrust, however, the soil is often not ideal, limited resistance can be obtained only by extending far beyond a building foundation pit, the cable-stayed anchor rod is not allowed to extend far, is too short and unreliable, the whole soil body is easy to collapse, foundation pit collapse accidents often occur in reality, and road collapse or personnel injury is caused.

The two prior arts have large investment at one time, and after the basement is completed, the basement can not be reused, and the waste is extremely large.

Disclosure of Invention

In order to solve one of the above technical problems, the present disclosure provides a foundation pit supporting structure for lateral support outside a pit.

According to one aspect of the present disclosure, there is provided a pit supporting structure of an out-of-pit lateral support, comprising:

a vertical barrier disposed on at least a portion of a perimeter of the foundation pit;

the connecting part is arranged on the vertical blocking part and is used for connecting at least part of the vertical blocking part; wherein the connecting part at least comprises a first connecting part;

a lateral support comprising at least a central lateral support connected to a portion between the two ends of the first connection portion, and applying a first positive pressure to the first connection portion and/or to the vertical barrier portion;

an inner support structure connected to the first connection portion, and through which the first positive pressure can be transmitted; and

and one end of the middle force application component is arranged on the middle transverse support, the other end of the middle force application component is arranged on the first connecting part, so that tension is applied to the first connecting part and/or the vertical blocking part through the middle force application component, and the force applied by the middle force application component at least partially counteracts the force applied to the vertical blocking part by the foundation pit peripheral soil borne by the vertical blocking part.

In accordance with an out-of-pit lateral support foundation pit support structure of at least one embodiment of the present disclosure, the central force application member is located on at least one side of the central lateral support.

According to the foundation pit supporting structure of the out-pit transverse support in at least one embodiment of the present disclosure, the connecting portion further comprises a second connecting portion, and an included angle with a preset angle is formed between the first connecting portion and the second connecting portion.

A pit supporting structure of an out-of-pit lateral support according to at least one embodiment of the present disclosure, the lateral support including at least a first lateral support connected to the first connection portion and/or the second connection portion; and

and one end of the first force application component is arranged on the first transverse support, the other end of the first force application component is connected to the first connecting part, so that a first tensile force is applied to the first connecting part and/or the vertical blocking part through the first force application component, and the force applied to the vertical blocking part by the soil around the foundation pit borne by the vertical blocking part is at least partially counteracted by the first tensile force applied by the first force application component.

A pit support structure of an out-of-pit lateral support according to at least one embodiment of the present disclosure, the lateral support further comprising: a second lateral support connected to the first and/or second connection portion;

The second transverse support is provided with one end of a second force application component, the other end of the second force application component is arranged on the second connecting portion, a second tensile force is applied to the second connecting portion and/or the vertical blocking portion through the second force application component, and the force applied to the vertical blocking portion by foundation pit peripheral soil borne by the vertical blocking portion is at least partially counteracted through the second tensile force applied by the second force application component.

According to the foundation pit supporting structure of the out-pit transverse support in at least one embodiment of the present disclosure, the first transverse support member and the second transverse support member are connected through a connecting member.

According to the foundation pit supporting structure of the out-pit transverse support in at least one embodiment of the present disclosure, the connecting part further comprises a third connecting part; the third connecting part is connected with the first connecting part, and an included angle with a preset angle is formed between the third connecting part and the first connecting part.

A pit support structure of an out-of-pit lateral support according to at least one embodiment of the present disclosure, the lateral support further comprising: a third lateral support connected to the third connection portion and enabling a third force applied by the third lateral support to the third connection portion to be transmitted along a length direction of the third connection portion; the reaction force of the third acting force forms at least part of the supporting force of the third connecting part on the third transverse supporting piece;

The third transverse support is provided with one end of a third force application component, the other end of the third force application component is arranged on the first connecting portion, a third tensile force is applied to the first connecting portion through the third force application component, and the third tensile force applied by the third force application component at least partially counteracts the force applied to the vertical blocking portion by the foundation pit peripheral soil borne by the vertical blocking portion.

According to the pit outer lateral bracing foundation pit supporting structure of at least one embodiment of the present disclosure, the size of the vertical blocking portions provided or the density or number of the vertical blocking portions provided is increased at the middle portion of the side portions of the foundation pit and/or the corner regions of the foundation pit, and/or the area of the cross section of the connecting portion provided at the middle portion of the side portions of the foundation pit and/or the corner regions of the foundation pit is increased.

The foundation pit supporting structure of the external transverse support of pit according to at least one embodiment of the present disclosure further includes:

a reinforcing barrier, the reinforcing barrier being sized to be equal to or greater than the vertical barrier, or increasing the number of reinforcing barriers; and/or the reinforcement barrier is positioned at the middle part of the side part of the foundation pit and/or is positioned at the corner area of the foundation pit.

and one end of the transverse force application device is fixed on the vertical blocking part and/or the connecting part, at least part of the transverse force application device is positioned in the soil around the foundation pit, so that a fourth acting force is applied to the vertical blocking part and/or the connecting part through the transverse force application device, and the fourth acting force is used for at least partially counteracting the force applied to the vertical blocking part by the soil around the foundation pit born by the vertical blocking part.

a corner support structure provided at a corner region of the foundation pit so as to apply a sixth force to an upper half and/or a connecting portion of at least one vertical barrier provided at the corner region of the foundation pit; and/or the angle support structure is arranged on the inner support structure and is used for applying a sixth acting force to the upper half part and/or the connecting part of the vertical blocking part arranged at the edge part of the foundation pit, wherein the sixth acting force is used for at least partially counteracting the force applied to the vertical blocking part by the soil around the foundation pit born by the vertical blocking part.

According to the foundation pit supporting structure of the out-pit transverse support in at least one embodiment of the present disclosure, the connecting portion comprises a crown beam and/or a wale, wherein the crown beam is arranged at the top of the vertical blocking portion, and/or the wale is arranged at a portion between two ends of the vertical blocking portion.

According to the foundation pit supporting structure of the external transverse support of the pit, the crown beam and/or the waist beam are/is supported at the pit bottom of the foundation pit through the internal diagonal braces.

According to the foundation pit supporting structure of the out-pit transverse support of at least one embodiment of the present disclosure, the cross section of the foundation pit is rectangular, square, curved, folded line-shaped or polygonal, or at least one part of the foundation pit is in an opening shape, or the side part of the cross section of the foundation pit at least comprises a straight line section and/or an arc line section.

According to the foundation pit supporting structure which is transversely supported outside the pit, the vertical blocking part and/or the reinforcing blocking part are selected from at least one or more of reinforced concrete cast-in-place piles, precast reinforced concrete sheet piles, tubular piles, steel sheet piles, steel pipe piles, cement soil gravel piles, profile steel cement soil stirring walls and reinforced concrete walls.

According to the foundation pit supporting structure of the out-pit transverse support of at least one embodiment of the present disclosure, the transverse support is of a whole structure or at least partially of an assembled structure or at least partially of a structure which can be assembled and/or disassembled for reuse; and/or the transverse support is arranged outside the foundation pit; and/or the transverse support is a steel structure or a reinforced concrete structure.

According to the foundation pit supporting structure transversely supported outside the pit, the middle force application component is one or more of a guy cable, a pull rod, a steel cable, a steel rod or a steel structure.

According to the foundation pit supporting structure of the out-pit transverse support of at least one embodiment of the present disclosure, the upper part of the transverse support is covered with soil, and/or the transverse support is provided with a counterweight, and/or the transverse support is anchored in the earth to prevent out-of-plane instability damage of the transverse support.

A pit support structure for an out-of-pit lateral support in accordance with at least one embodiment of the present disclosure, the inner support comprising a horizontal support structure, a diagonal brace, an anchor rod, or a concentrated vertical pile.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1-4 are schematic cross-sectional structural views of foundation pit support structures of an off-pit lateral support according to various embodiments of the present disclosure.

Fig. 5-7 are schematic structural views of a pit supporting structure of an out-of-pit lateral support according to various embodiments of the present disclosure.

Fig. 8-10 are schematic structural views of foundation pit supporting structures of an out-of-pit lateral support according to various embodiments of the present disclosure.

Fig. 11 and 12 are schematic structural views of a pit supporting structure of an out-of-pit lateral support according to various embodiments of the present disclosure.

Fig. 13 and 14 are schematic structural views of a pit supporting structure of an out-of-pit lateral support according to various embodiments of the present disclosure.

Fig. 15 is a schematic structural view of a pit supporting structure of an out-of-pit lateral support according to one embodiment of the present disclosure.

Fig. 16 to 22 are schematic cross-sectional structural views of a pit supporting structure of an out-of-pit lateral support according to another embodiment of the present disclosure.

The reference numerals in the drawings specifically are:

foundation pit supporting structure with 100 pit outer transverse supports

110 vertical pile

120 connection part

121 first connecting portion

122 second connection portion

123 third connecting portion

130 transverse support

131 first transverse support

132 second transverse support

133 third transverse support

134 first force application member

135 second force application member

136 third force application member

137 connecting piece

140 reinforced barrier

150 transverse force application device

160 inner support structure

170-angle supporting structure

180 waist beam

190 inner diagonal bracing

201 middle transverse support

202 middle force application component

203 corner transverse support

204 corner force applying members.

Detailed Description

The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.

In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the exemplary implementations/embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.

The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.

When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" higher "and" side (e.g., as in "sidewall"), etc., to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below" … … can encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising," and variations thereof, are used in the present specification, the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof is described, but the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximation terms and not as degree terms, and as such, are used to explain the inherent deviations of measured, calculated, and/or provided values that would be recognized by one of ordinary skill in the art.

As shown in fig. 1 to 4, a pit supporting structure 100 of an out-of-pit lateral support of the present disclosure includes: vertical stops, connections 120, and lateral supports.

In the present disclosure, the vertical blocking portion may be a vertical pile 110, where the vertical pile 110 is disposed on at least a portion of the periphery of the foundation pit; so that the vertical piles 110 block the earthwork around the foundation pit to prevent the earthwork from collapsing. In another embodiment, the vertical blocking portion may be a vertical continuous wall or the like.

In practical use, the foundation pit supporting structure of the external transverse support of the pit at least partially installs the vertical piles 110 before digging the foundation pit; on the other hand, when the foundation pit is constructed or after the construction is finished, vertical piles 110 are arranged on the periphery of the foundation pit.

The vertical piles 110 can be cylindrical piles or steel sheet piles; when the vertical pile 110 is a cylindrical pile, the cylindrical pile may be a precast pile or a cast-in-place pile, and the precast pile may also be a reinforced concrete precast pile or a steel pile, and preferably a steel pile, to facilitate installation of the foundation pit supporting structure 100 laterally supported outside the pit, and the vertical pile 110 can be repeatedly used a plurality of times.

The steel sheet pile is steel construction prefab, when keeping earth through the steel sheet pile, the length direction of steel sheet pile is the direction of height after the installation, the width direction of steel sheet pile is formed with connection structure to can make adjacent steel sheet pile be connected through this connection structure.

In practical use, the vertical piles 110 may be disposed in close proximity to each other to prevent earthwork from entering the foundation pit through gaps between the vertical piles 110, resulting in safety problems such as personnel injury.

Of course, a certain gap may be formed between two adjacent vertical piles 110, and preferably, when the gap between two adjacent vertical piles 110 is large, a structure for retaining soil needs to be provided between two vertical piles 110 with the gap, or the soil is solidified to form a pile wall retaining structure, so as to prevent the soil from collapsing.

In the present disclosure, the vertical piles 110 provided at some weak areas or relatively stressed areas of the foundation pit are increased in size or density or number.

The weak area of the foundation pit can be the middle part of the side part of the foundation pit or the corner area of the foundation pit. For example, when the length of the side portion of the foundation pit is greater than a certain preset value, the middle portion of the side portion of the foundation pit may be considered to belong to a weak area. On the other hand, the corner regions of the foundation pit are generally relatively strong and complex, and belong to weak regions of the foundation pit.

Also, the size increase of the vertical piles 110 specifically includes: when the vertical piles 110 are cylindrical piles, the diameter of the vertical piles 110 may be increased, i.e., the diameter of the vertical piles 110 located at the weak area is greater than the diameter of the vertical piles 110 located outside the weak area; accordingly, when the vertical piles 110 are constructed of steel sheet piles or the like, the thickness or profile size of the steel sheet piles may be increased, i.e., the thickness or profile size of the steel sheet piles located at the weak areas is greater than that of the vertical devices located outside the weak areas.

On the other hand, the density increase of the vertical piles 110 may include: the interval between the vertical piles 110 of the weak area is smaller than the interval between the vertical piles 110 outside the weak area, or when the vertical piles 110 outside the weak area are disposed in close proximity, the vertical piles 110 inside the weak area may be disposed in a plurality of columns or rows such that the number of vertical piles 110 per unit area within the weak area is greater than the number of vertical piles 110 per unit area outside the weak area.

Furthermore, the increase in the number of vertical piles may be embodied as an increase in the density of the vertical piles or a provision of a plurality of rows and columns of vertical piles, thereby playing a role in reinforcing the vertical barrier.

The connection portion is disposed on the vertical pile 110 to connect at least part of the vertical pile 110 through the connection portion. In the present disclosure, the connection portion includes a crown beam and/or a wale 180, wherein the crown beam is disposed at the top of the vertical pile 110, and/or the wale 180 is disposed at a portion between both ends of the vertical pile 110. More preferably, the corbels and/or wales 180 may be supported to the bottom of the foundation pit by inner braces 190.

In the present disclosure, the connection parts may be provided in plurality, and each of the connection parts connects at least part of the vertical piles 110, and the connection parts may be connected to each other such that the connection parts are formed as one body. Of course, the connection portion may be formed at one time, for example, by a concrete pouring method after the vertical piles 110 are properly disposed.

On the other hand, the connection part may be formed as a steel member, and at this time, the connection part may be connected to the top of the vertical pile 110 through a connection structure so that the vertical pile 110 and the connection part are formed as one body.

As defined above, in the present disclosure, the cross-sectional area of the connection provided at some weakened areas of the foundation pit increases, i.e. a vertical plane or a substantially vertical plane perpendicular to the direction of extension of the connection. Therefore, the load limit of the connecting part near the weak area can be improved, so that the stability of the foundation pit supporting structure of the transverse support outside the pit is improved.

Similar to the above, the weakened area of the pit may be a middle portion of the side of the pit or a corner area of the pit. For example, when the length of the side portion of the foundation pit is greater than a certain preset value, the middle portion of the side portion of the foundation pit may be considered to belong to a weak area. On the other hand, the corner regions of the foundation pit are generally relatively strong and complex, and belong to weak regions of the foundation pit.

In the present disclosure, the connection is preferably a reusable structure or a partially reusable structure, and thereby enables at least a portion of the foundation pit infrastructure of the present disclosure to be reused.

In addition, as shown in fig. 16, the vertical piles 110 may be steel piles, and the upper sides of the lateral supports may be covered with soil, which may make the lateral supports resistant to out-of-plane instability damage, although the upper sides of the lateral supports may be not covered with soil. The connecting portion is formed into a crown beam, the crown beam is an integral crown beam, and the transverse supporting piece is connected with the crown beam.

In another embodiment, as shown in fig. 17, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil, which may make the transverse support resist out-of-plane instability damage, although the upper side of the transverse support may not be covered with soil. The connecting part is formed into two crown beams, and the crown beams are formed through the tops of two crown Liang Gazhu steel piles, and the connecting part can be realized by adopting structures such as I-steel, channel steel, reinforced concrete or steel pipes. The transverse support is connected with the crown beam.

In another embodiment, as shown in fig. 18, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil, which may make the transverse support resist out-of-plane instability damage, although the upper side of the transverse support may not be covered with soil. The connecting portion is formed into a crown beam, the crown beam is an integral crown beam, and the transverse supporting piece is connected with the crown beam. More preferably, the connection part can be realized by adopting a structure such as I-steel, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in fig. 19, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil, which may make the transverse support resist out-of-plane instability damage, although the upper side of the transverse support may not be covered with soil. The connecting portion comprises a crown beam and a waist beam, wherein the crown beam is connected with a transverse force application device (anchor rod), the waist beam is also connected with the transverse force application device (anchor rod), and the transverse support piece is connected with the crown beam. More preferably, the connection part can be realized by adopting a structure such as I-steel, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in fig. 20, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil, which may make the transverse support resist out-of-plane instability damage, although the upper side of the transverse support may not be covered with soil. The connecting portion comprises a crown beam and a waist beam, wherein the crown beam is connected with an inner supporting structure, the waist beam is also connected with an inner supporting structure, and the crown beam is connected with the inner supporting structure connected with the waist beam to form a multi-layer inner supporting structure. The transverse support is connected with the crown beam. More preferably, the connection part can be realized by adopting a structure such as I-steel, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in fig. 21, the vertical piles 110 may be steel piles, and the upper side of the lateral support may be covered with soil, or the upper side of the lateral support may be uncovered with soil. The connecting portion comprises a crown beam and a waist beam, the covering soil can enable the transverse supporting piece to resist out-of-plane instability damage, the waist beam is connected with an inner supporting structure, and the transverse supporting piece is connected with the crown beam. More preferably, the connection part can be realized by adopting a structure such as I-steel, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in fig. 22, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil, which may make the transverse support resist out-of-plane instability damage, although the upper side of the transverse support may not be covered with soil. The connecting portion comprises two crown beams and two waist beams, wherein the two crown beams are formed at the tops of two crown Liang Gazhu steel piles, the waist beams are connected with an inner supporting structure, and the connecting portion can be realized by adopting structures such as I-steel, channel steel, reinforced concrete or steel pipes. The transverse support is connected with the crown beam.

In the present disclosure, as shown in fig. 5 to 7, the connection parts may include the first connection part 121, the second connection part 122, and the third connection part 123, considering that the number of connection parts may be plural, of course, the connection parts may also include other connection parts.

The second connecting portion 122 and the third connecting portion 123 are respectively connected to two ends of the first connecting portion 121, and an included angle with a preset angle is formed between the second connecting portion 122 and the first connecting portion 121, and an included angle with a preset angle is formed between the third connecting portion 123 and the first connecting portion 121. In this disclosure, the preset angle may be 90 °, that is, the second connecting portion 122 and the third connecting portion 123 are perpendicular to the first connecting portion 121 and are located on the same side of the first connecting portion 121; of course, the preset angle may be other angle values, and the preset angle may be adjusted according to the shape of the land and the shape of the building, which will not be described in detail herein.

The lateral supports include at least a middle lateral support 201, the middle lateral support 201 being disposed at a portion between both ends of the first connection portion 121, and the middle lateral support 201 applying a first positive pressure to the first connection portion 121.

The inner support structure 160 is connected to the first connection part 121, and the first positive pressure can be transmitted through the inner support structure 160; that is, the inner support structure 160 may form a support foundation for the middle lateral support 201.

One end of the middle force application member 202 is disposed on the middle transverse support 201, and the other end of the middle force application member 202 is disposed on the first connection portion 121, so that a tensile force is applied to the first connection portion 121 through the middle force application member 202, and the tensile force applied by the middle force application member 202 at least partially counteracts the force applied to the vertical pile 110 by the foundation pit peripheral soil borne by the vertical pile 110.

Preferably, the middle force application member 202 is located on at least one side of the middle lateral support 201, for example, as shown in fig. 5 and 6, the middle force application members 202 are disposed on both sides of the middle lateral support 201, so that the middle lateral support 201 can be kept stable under traction of the middle force application members 202 on both sides.

In the present disclosure, as shown in fig. 11 and 12, the lateral support may be provided as at least one, for example, the lateral support may include a first lateral support 131, and of course, the lateral support may also include a second lateral support 132, a third lateral support 133, and other lateral supports.

As shown in fig. 15, the first lateral support 131 is disposed at the first connection portion 121 and/or the second connection portion 122, and enables the first force applied by the first lateral support 131 to the second connection portion 122 to be transmitted along the length direction of the second connection portion 122, that is, when the first lateral support 131 is disposed at the first connection portion 121, the first force applied by the first lateral support 131 to the first connection portion 121 has a force perpendicular to the extending direction of the first connection portion 121; when the first lateral support member 131 is disposed on the second connection portion 122, a first force applied by the first lateral support member 131 to the second connection portion 122 has a force parallel to the extending direction of the second connection portion 122, and a reaction force of the first force forms at least a part of a supporting force of the second connection portion on the first lateral support member 131.

More preferably, the second lateral support 132 is provided at the first connection portion 121 and/or the second connection portion 122; when the second lateral support 132 is disposed on the first connecting portion 121, a second force applied by the second lateral support 132 to the first connecting portion 121 has a force parallel to the extending direction of the first connecting portion 121, and a reaction force of the second force forms at least a part of a supporting force of the first connecting portion to the second lateral support; when the second lateral support 132 is disposed at the second connection portion 122, a second force applied by the second lateral support 132 to the second connection portion 122 has a force perpendicular to the extending direction of the second connection portion 122.

In a specific implementation form, the length direction of the first lateral support member 131 may be consistent with the length direction of the second connection portion 122, or the angle between the length direction of the first lateral support member 131 and the length direction of the second connection portion 122 may be within 30 °, so that when the first lateral support member 131 applies pressure to the second connection portion 122, the pressure can be transferred to the earth around the foundation pit or at least self-balance a portion through the second connection portion 122, in other words, the second connection portion 122 provides a supporting force to the first lateral support member 131.

One end of the first force application member 134 is disposed on the first transverse support 131, and the other end of the first force application member 134 is connected to the first connection portion 121, so that a first tensile force is applied to the first connection portion 121 by the first force application member 134, and the force applied to the vertical pile 110 by the soil around the foundation pit borne by the vertical pile 110 is at least partially offset by the first tensile force applied by the first force application member 134.

That is, the first tensile force can be decomposed into a force opposite to the direction in which the soil (earth) around the foundation pit applies to the vertical piles 110. The lateral support of the present disclosure and the first urging member 134 and the like are both disposed outside the foundation pit.

That is, during construction of the foundation pit, the soil around the foundation pit applies a force to the vertical piles 110 in a direction toward the inside of the foundation pit, and when the force is greater than the load limit of the vertical piles 110, the soil around the foundation pit collapses, resulting in serious safety liability accidents.

In the present disclosure, however, the lateral supports provide forces to the vertical piles outside the foundation pit, enabling forces applied to the vertical piles 110 by the soil (earthwork) surrounding the foundation pit to be at least partially counteracted, thereby improving the stability of the vertical piles 110. Still further, it is considered that the connection portion is provided at the upper end of the vertical pile 110, and the lateral support is connected to the connection portion, whereby a point of application of the first tensile force applied to the connection portion by the lateral support is located at the upper end of the vertical pile 110, to further improve stability of the vertical pile 110.

Of course, the connection portion may be located at a middle area of the vertical pile 110, and the lateral support may be disposed at a middle area of the vertical pile 110, which is not described in detail herein.

In the present disclosure, the second transverse support 132 is disposed on the first connecting portion 121, and enables the second force applied by the second transverse support 132 to the first connecting portion 121 to be transferred along the length direction of the first connecting portion 121. That is, the length direction of the second lateral support 132 may be consistent with the length direction of the first connection part 121, or an angle between the length direction of the second lateral support 132 and the length direction of the first connection part 121 may be within 30 °, so that when the second lateral support 132 applies pressure to the first connection part 121, the pressure can be transmitted to the earth around the pit through the first connection part 121 or at least self-balances a portion, in other words, the first connection part 121 provides a supporting force to the second lateral support 132.

The second transverse support 132 is provided with one end of a second force application member 135, and the other end of the second force application member 135 is disposed at the second connection portion 122, so that a second tensile force is applied to the second connection portion 122 through the second force application member 135, and the force applied to the vertical pile 110 by the foundation pit peripheral soil borne by the vertical pile 110 is at least partially offset by the second tensile force applied by the second force application member 135. That is, the second tensile force can be decomposed into a force opposite to the direction in which the soil (earth) around the foundation pit applies to the vertical piles 110.

The first and second lateral supports 131 and 132 are connected by the connection member 137, so that the first and second lateral supports 131 and 132 can more easily achieve force balance, and the first and/or second lateral supports 131 and 132 are prevented from being damaged such as being bent. In the present disclosure, the connection 137 may be a force application member. In the present disclosure, the connection member 137 may be a cable, a pull rope, a pull rod, a support rod, a steel structure, a reinforced concrete beam, a reinforced concrete slab, or the like.

Similarly, the third lateral support 133 is disposed on the third connecting portion 123, and enables the third force applied by the third lateral support 133 to the third connecting portion 123 to be transmitted along the length direction of the third connecting portion 123; the reaction force of the third force forms at least part of the supporting force of the third connection part on the third transverse support. That is, the length direction of the third lateral support 133 may be consistent with the length direction of the third connection portion 123, or an angle between the length direction of the third lateral support 133 and the length direction of the third connection portion 123 may be within 30 °, so that when the third lateral support 133 applies pressure to the third connection portion 123, the pressure can be transmitted to the earth around the pit through the third connection portion 123, in other words, the third connection portion 123 provides a supporting force to the third lateral support 133.

The third transverse support 133 is provided with one end of a third force application member 136, and the other end of the third force application member 136 is disposed at the first connection portion 121, so that a third tensile force is applied to the first connection portion 121 by the third force application member 136, and the force applied to the vertical pile 110 by the foundation pit peripheral soil borne by the vertical pile 110 is at least partially offset by the third tensile force applied by the third force application member 136.

As another implementation form, as shown in fig. 7, the lateral support member includes at least a corner lateral support member 203, the corner lateral support member 203 is disposed at a junction of the first connection portion 121 and the second connection portion 122, and the corner lateral support member 203 applies a second positive pressure to the first connection portion 121 and/or the second connection portion 122.

One end of the corner force applying member 204 is disposed on the corner transverse support 203, and the other end of the corner force applying member 204 is disposed on the first connection portion 121 and/or the second connection portion 122, so that a tensile force is applied to the first connection portion 121 and/or the second connection portion 122 by the corner force applying member 204, and the tensile force applied by the corner force applying member 204 at least partially counteracts a force applied to the vertical pile 110 by soil around the foundation pit borne by the vertical pile 110.

More preferably, the inner support structure 160 may be connected to the junction of the first and second connection parts 121 and 122, and the second positive pressure can be transmitted through the inner support structure 160, that is, the inner support structure 160 may also provide support for the corner lateral support 203.

As shown in fig. 8 to 10, the vertical piles 110 may be selected as steel sheet piles.

Similarly, as shown in fig. 13 and 14, the vertical piles 110 may be selected as steel sheet piles.

Preferably, the pit supporting structure 100 which is laterally supported outside the pit further includes a reinforcement stopper 140, and in one embodiment, the reinforcement stopper 140 may be formed as a reinforcement pile. Of course, the reinforcement stopper 140 may be formed as a wall or the like.

The size of the reinforcement barrier 140 is greater than or equal to that of the vertical piles 110, or the number of the reinforcement barriers is increased, and/or the reinforcement barrier 140 is located at the middle part of the side part of the foundation pit and/or at the corner region of the foundation pit, so that the supporting capacity of the weak region of the foundation pit can be improved, the foundation pit supporting structure transversely supported outside the pit has higher stability, or a reinforcement region is specially built to replace a horizontal support or an inclined support.

On the other hand, the reinforcement barrier 140 is also disposed between two vertical piles 110; or near the vertical piles 110 to increase the supporting capacity of the weak area.

In the present disclosure, the reinforcement stopper 140 has a size larger than that of the vertical pile 110, including: when both the reinforcement stop 140 and the vertical pile 110 are cylindrical, the reinforcement stop 140 has a diameter greater than the diameter of the vertical pile 110, otherwise the reinforcement stop 140 has a cross-sectional area greater than the cross-sectional area of the vertical pile 110, and more preferably the reinforcement stop 140 has a load capacity greater than the load capacity of the vertical pile 110.

To further improve the supporting stability of the vertical pile 110, in the present disclosure, the foundation pit supporting structure 100 of the out-pit lateral support may further include a lateral force application device 150, where one end of the lateral force application device 150 is fixed to the vertical pile 110 and/or the connection portion, and at least part of the lateral force application device 150 is located in the soil around the foundation pit, so as to apply, by the lateral force application device 150, a fourth force to the vertical pile 110 and/or the connection portion, where the fourth force is used to at least partially counteract the force applied to the vertical pile 110 by the soil around the foundation pit borne by the vertical pile 110, that is, the fourth force can be decomposed into a force opposite to the direction of the force applied to the vertical pile 110 by the soil around the foundation pit (earthwork).

As a specific implementation, the lateral force application device 150 includes a structure such as a cable-stayed anchor, a steel pipe, and a soil nail, that is, the lateral force application device 150 may selectively use at least one of the cable-stayed anchor, the steel pipe, and the soil nail.

Considering that a foundation pit may form two parallel or substantially parallel sides, for example, when the foundation pit is a rectangular foundation pit, an inner support structure 160 may be provided at the long side of the foundation pit, the inner support structure 160 being located inside the foundation pit and being adapted to apply a fifth force to the connection and/or to the vertical piles 110, the fifth force being adapted to at least partially counteract the forces exerted by the foundation pit periphery soil (earthwork) to the vertical piles 110, i.e. the fifth force being able to be resolved into forces opposite to the forces exerted by the foundation pit periphery soil (earthwork) to the vertical piles 110.

More preferably, the pit supporting structure 100 of the out-pit lateral support further comprises: a corner support structure 170, said corner support structure 170 being arranged at a corner region of said foundation pit, so as to apply a sixth force through said corner support structure 170 to at least one upper half and/or connection of a vertical pile 110 arranged at the corner region of said foundation pit; and/or the corner support structure 170 is disposed on the inner support structure 160 of the foundation pit, and is configured to apply a sixth force to the upper half and/or the connection portion of the vertical pile 110 disposed on the side portion of the foundation pit, where the sixth force is configured to at least partially counteract a force applied to the vertical pile 110 by the foundation pit periphery soil borne by the vertical pile 110.

On the other hand, when the corner support structure 170 is disposed in the corner region of the foundation pit, two connection portions disposed in the corner region are formed to have a certain angle, and at this time, one end of the corner support structure is disposed in one connection portion of the two connection portions, and the corner support structure 170 may be disposed in a horizontal shape or may be disposed in an inclined shape having a certain angle with respect to the horizontal surface. Structurally, the angle support structure 170 may be at least one of a single-layered truss structure, a multi-layered truss structure, a steel pipe structure, a reinforced concrete support structure, a diagonal brace structure, and a steel pipe diagonal brace.

On the other hand, when the corner support structure 170 is disposed on the inner support structure 160, one end of the corner support structure 170 is disposed on the inner support structure 160 and the other end is disposed on the connection portion, so that the inner support structure 160 is stably supported on the connection portion by the corner support structure 170. Similarly, the corner support structures 170 may be disposed horizontally or inclined at an angle to the horizontal. Structurally, the angle support structure 170 may be at least one of a single-layered truss structure, a multi-layered truss structure, a steel pipe structure, a reinforced concrete support structure, a diagonal brace structure, and a steel pipe diagonal brace.

In an alternative embodiment, the cross section of the foundation pit is rectangular, square, curved, folded linear or polygonal, or at least a part of the foundation pit is open, or the side part of the cross section of the foundation pit at least comprises a straight line section and/or an arc section, thereby enabling the foundation pit of the present disclosure to be suitable for different plots and suitable for foundations of buildings with different shapes.

As one preferred aspect, the vertical piles 110 and/or the reinforcement barriers 140 are selected from at least one or more of reinforced concrete cast-in-place piles, precast piles, pipe piles, steel sheet piles, steel pipe piles, cement gravel piles, precast reinforced concrete sheet piles, section steel cement mixing walls, and reinforced concrete walls.

In the present disclosure, the first force application member, the second force application member, and the third force application member may be in a structure such as a cable, a tie rod, or a support rod, and the first force application member, the second force application member, and the third force application member may be the same or different from each other. More preferably, one end of the first force application member passes through the first lateral support and is fixed to the first lateral support, and the other end of the first force application member passes through the connecting portion and is fixed to the connecting portion; similarly, one end of the second force application member passes through the second lateral support and is fixed to the second lateral support, and the other end of the second force application member passes through the connecting portion; one end of the third force application component passes through the third transverse supporting piece and is fixed on the third transverse supporting piece, and the other end of the third force application component passes through the connecting part; one end of the connecting piece passes through the first transverse supporting piece and is fixed on the first transverse supporting piece, and the other end of the connecting piece passes through the second transverse supporting piece and is fixed on the second transverse supporting piece. The middle force application component is one or more of a guy cable, a pull rod, a steel cable, a steel rod or a steel structure.

Moreover, the transverse supporting piece is of an integral structure or at least partially of an assembled structure or at least partially of a structure which can be assembled and/or disassembled for reuse, so that the amount of construction waste is reduced, and the environment-friendly, energy-saving and environment-friendly construction field is realized.

The upper portion of the lateral support is earthed and/or the lateral support is provided with a counterweight and/or the lateral support is anchored in the earth to prevent out-of-plane instability damage of the lateral support. In the present disclosure, the lateral support member is a steel structure or a reinforced concrete structure.

It will be appreciated by those skilled in the art that "transverse" as used in this disclosure, such as "transverse support" and the like, does not mean that the structure must lie in a horizontal plane, and that the plane of the structure may be at an angle to the horizontal and not perpendicular to the horizontal.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the present application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.

Claims

1. The utility model provides a pit supporting construction of horizontal support outside hole which characterized in that includes:

2. The pit supporting structure of an out-of-pit lateral support of claim 1, wherein the central force applying member is located on at least one side of the central lateral support.

3. The pit supporting structure of claim 1, wherein the connection part further comprises a second connection part, and an included angle of a preset angle is formed between the first connection part and the second connection part.

4. A pit supporting structure for an out-of-pit lateral support according to claim 3, wherein the lateral support comprises at least a first lateral support connected to the first connection and/or second connection; and

5. The pit supporting structure of an out-of-pit lateral support of claim 4, wherein the lateral support further comprises: a second lateral support connected to the first and/or second connection portion;

6. The pit supporting structure of an out-of-pit lateral support of claim 5, wherein the first lateral support member and the second lateral support member are connected by a connecting member.

7. The pit supporting structure of an out-of-pit lateral bracing of claim 4, wherein the connecting portion further comprises a third connecting portion; the third connecting part is connected with the first connecting part, and an included angle with a preset angle is formed between the third connecting part and the first connecting part.

8. The pit supporting structure of an out-of-pit lateral support of claim 7, wherein the lateral support further comprises: a third lateral support connected to the third connection portion and enabling a third force applied by the third lateral support to the third connection portion to be transmitted along a length direction of the third connection portion; the reaction force of the third acting force forms at least part of the supporting force of the third connecting part on the third transverse supporting piece;

9. The pit supporting structure of an off-pit lateral support according to any one of claims 1-8, wherein the size of the vertical barriers provided or the density or number of vertical barriers provided is increased at the middle part of the sides of the pit and/or the corner areas of the pit and/or the area of the cross section of the connection provided at the middle part of the sides of the pit and/or the corner areas of the pit is increased.

10. The pit supporting structure of an off-pit lateral bracing of any one of claims 1-8, further comprising:

11. The pit supporting structure of an off-pit lateral bracing of any one of claims 1-8, further comprising:

12. The pit supporting structure of an off-pit lateral bracing of any one of claims 1-8, further comprising:

13. The pit supporting structure of an out-of-pit lateral support according to any one of claims 1 to 8, wherein the connection portion comprises a crown beam and/or a wale, wherein the crown beam is provided on top of the vertical barrier portion and/or the wale is provided at a portion between both ends of the vertical barrier portion.

14. The pit supporting structure of an out-of-pit lateral bracing according to claim 13, wherein the crown beams and/or wales are supported at the pit bottom of the pit by inner diagonal braces.

15. The pit supporting structure of an off-pit lateral bracing according to any one of claims 1 to 8, wherein the cross section of the pit is rectangular, square, curved, folded line-shaped or polygonal, or at least a part of the pit is open-ended, or the side of the cross section of the pit comprises at least a straight line segment and/or an arc segment.

16. The pit supporting structure of an off-pit lateral support according to any one of claims 1 to 8, wherein the vertical barriers and/or reinforcing barriers are selected from at least one or more of reinforced concrete cast-in-place piles, precast reinforced concrete piles, pipe piles, steel sheet piles, steel pipe piles, cement gravel piles, steel reinforced cement mixing walls and reinforced concrete walls.

17. The pit supporting structure of an off-pit lateral support of any one of claims 1-8, wherein the lateral support is of unitary construction or at least partially of fabricated construction or at least partially of a spliced and/or removable re-usable construction; and/or the transverse support is arranged outside the foundation pit; and/or the transverse support is a steel structure or a reinforced concrete structure.

18. The pit supporting structure of an off-pit lateral support of any one of claims 1-8, wherein the central force application member is one or more of a cable, a tie rod, a wire rope, a steel rod, or a steel structure.

19. Foundation pit supporting structure for external transverse support according to any one of claims 1-8, wherein the upper part of the transverse support is earthed and/or the transverse support is provided with a counterweight and/or the transverse support is anchored in the earth to prevent out-of-plane instability damage of the transverse support.

20. The pit supporting structure of an off-pit lateral support of any one of claims 1-8, wherein the inner support comprises a horizontal support structure, a diagonal brace, an anchor rod, or a concentrated vertical pile.