CN219753249U

CN219753249U - Annular supporting foundation pit supporting structure

Info

Publication number: CN219753249U
Application number: CN202320397385.4U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Jusheng Co ltd
Current assignee: Shanghai Bopu Construction Technology Co ltd
Priority date: 2022-09-15
Filing date: 2023-03-06
Publication date: 2023-09-26
Anticipated expiration: 2033-03-06
Also published as: CN117306540A

Abstract

The present disclosure provides a foundation pit supporting structure of annular support, it includes: 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; and a lateral ring support structure intersecting the foundation pit such that at least a portion of the lateral ring support structure is located outside the foundation pit and at least a portion of the lateral ring support structure is located inside the foundation pit; the transverse ring support structure is connected to the connecting portion and/or the vertical blocking portion, and a structural system with self-balancing performance is integrally formed, so that the force applied to the vertical blocking portion and/or the connecting portion by the foundation pit outer soil borne by at least one part of the vertical blocking portion and/or the connecting portion can be balanced through the transverse ring support structure.

Description

Annular supporting foundation pit supporting structure

Technical Field

The disclosure relates to a foundation pit supporting structure with annular supports, 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 annular supports is arranged in the foundation 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 with an annular support.

According to one aspect of the present disclosure, there is provided a foundation pit supporting structure of an annular 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; and

a transverse ring support structure comprising an annular member and a force applying component; the annular member intersecting the foundation pit such that at least a portion of the annular member is located outside the foundation pit and at least a portion of the annular member is located inside the foundation pit; one end of the force application component is connected to the annular component, and the other end of the force application component is connected to the connecting part and/or the vertical blocking part so as to apply a first acting force to the connecting part and/or the vertical blocking part through the force application component;

wherein the transverse ring support structure integrally forms a structural system with self-balancing properties to be able to balance forces exerted by at least a portion of the vertical barriers and/or connections in the earth outside the foundation pit to which they are subjected.

The foundation pit supporting structure of the annular support according to at least one embodiment of the present disclosure, the annular member is formed of a single annular member, or the annular member is formed by connecting at least two lateral arch structures to each other, or the annular member is a unitary structure, or is at least partially an assembled and/or removably reusable structure.

According to the foundation pit supporting structure of the annular support of at least one embodiment of the present disclosure, the portion of the annular component located inside the foundation pit is connected with the connecting portion and/or the vertical blocking portion through a force application component, or the portion of the annular component located inside the foundation pit is supported in soil through a force application component, wherein the force application component is selected from a steel rod, reinforced concrete and/or a steel structure, and the force applied to the connecting portion and/or the vertical blocking portion by the force application component is thrust.

According to the foundation pit supporting structure of the annular support, the part, located outside the foundation pit, of the annular component is connected with the connecting portion and/or the vertical blocking portion through a force application component, wherein the force application component is one or more of a guy cable, a pull rod, a steel cable, a steel rod, reinforced concrete or a steel structure, and the force applied by the force application component to the connecting portion and/or the vertical blocking portion is a tensile force.

In accordance with a foundation pit supporting structure of an annular support of at least one embodiment of the present disclosure, the annular member is connected or disconnected to the connection and/or vertical barrier at the intersection of the annular member and the foundation pit.

According to the foundation pit supporting structure of the annular support of at least one embodiment of the present disclosure, when the annular member is connected with the foundation pit, the portion of the annular member connected with the foundation pit is directly or indirectly connected with the connecting portion, the vertical blocking portion and/or the reinforcing blocking portion.

The foundation pit supporting structure of the annular bracing according to at least one embodiment of the present disclosure is characterized in that the size of the vertical blocking portions provided is increased 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.

A foundation pit supporting structure of an annular bracing according to at least one embodiment of the present disclosure, further comprising:

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 second acting force is applied to the vertical blocking part and/or the connecting part through the transverse force application device, and the second 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.

and the inner supporting structure is positioned in the foundation pit and is used for applying a third acting force to the connecting part and/or the vertical blocking part, and the third 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 foundation pit supporting structure of an annular bracing according to at least one embodiment of the present disclosure, the inner supporting structure is for applying the third force to a middle portion of an edge portion of the foundation pit.

a corner support structure provided at a corner region of the foundation pit so as to apply a fourth 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 fourth 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 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.

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

According to the annular bracing foundation pit supporting structure of at least one embodiment of the present disclosure, the crown beams and/or the wales are supported at the bottom of the foundation pit through the inner diagonal braces.

According to the annular supporting foundation pit supporting structure of at least one embodiment of the present disclosure, the cross section of the foundation pit is rectangular, square, curved, folded linear 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 section.

According to the annular bracing foundation pit supporting structure of at least one embodiment of the present disclosure, the vertical blocking portion and/or the reinforcing blocking portion is 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 gravel piles, section steel cement mixing walls and reinforced concrete walls.

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

The annular support foundation pit supporting structure according to at least one embodiment of the present disclosure adopts at least one or more of reinforced concrete cast-in-place or prefabricated, steel pipes, steel structures, spliced and detachable reusable structures.

A foundation pit supporting structure of an annular support according to at least one embodiment of the present disclosure, the annular member having a regular annular structure or an irregular annular structure; and/or the annular member is a constant-section annular member or a variable-section annular member; and/or the annular component is horizontally arranged or obliquely arranged or is in high-low fluctuation.

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. 1-11 are schematic cross-sectional structural views of a ring-supported foundation pit support structure according to various embodiments of the present disclosure.

Fig. 12-17 are schematic structural views of a foundation pit supporting structure of a ring support according to various embodiments of the present disclosure.

Fig. 18-23 are schematic structural views of a foundation pit supporting structure of a ring support according to various embodiments of the present disclosure.

Fig. 24 and 25 are schematic structural views of a foundation pit supporting structure of a ring support according to various embodiments of the present disclosure.

The reference numerals in the drawings specifically are:

Foundation pit supporting structure with 100 annular supports

110 vertical blocking portion

120 connection part

130 transverse ring support structure

131 annular member

132 force application member

140 reinforced barrier

150 transverse force application device

160 inner support structure

170-angle supporting structure

180 waist beam

190 inner diagonal bracing

200, putting the slope.

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 11, a ring-supported foundation pit supporting structure 100 of the present disclosure includes: vertical stops, connection 120, and lateral ring support structure 130.

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 actual use, the annular-supported foundation pit supporting structure of the present disclosure, on one hand, at least partially installs the vertical piles 110 before excavating 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 selected from 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, so as to facilitate the installation of the foundation pit supporting structure 100 of the annular support, 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 actual use, the vertical piles 110 may be disposed in close proximity to each other to prevent earthwork (soil) 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 having the gap, or the soil (soil) is solidified to form a pile wall retaining structure, so as to prevent collapse of the soil (soil outside the foundation pit).

In the present disclosure, the vertical piles provided in some weak areas or areas with relatively large stress 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.

The strength may be improved by increasing the size of the set vertical piles 110 or increasing the density or number of the set vertical piles 110 at the middle portion of the side portion of the foundation pit and/or the corner region of the foundation pit, and/or increasing the area of the cross section of the connection 120 set at the middle portion of the side portion of the foundation pit and/or the corner region of the foundation pit.

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

In another aspect, the increasing of the density of the vertical piles may include: the spacing between the vertical piles of the weak area is smaller than the spacing between the vertical piles outside the weak area, or when the vertical piles outside the weak area are arranged in close proximity, the vertical piles inside the weak area may be arranged in a plurality of columns or a plurality of rows, and the number of vertical piles in a unit area inside the weak area is made to be greater than the number of vertical piles in a 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.

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 as shown in fig. 3, and the number of vertical piles 110 per unit area inside the weak area is made greater than the number of vertical piles 110 per unit area outside the weak area.

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 crown beam and/or the wale may be made of reinforced concrete material, or may be made of steel structure.

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 bearing capacity of the connecting part near the weak area can be improved, and the stability of the foundation pit supporting structure of the annular support 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. 5, the vertical piles 110 may be steel piles, and the upper part of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resist out-of-plane instability damage, and of course, the upper part of the transverse ring support structure 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 ring support structure is connected with the crown beam.

In another embodiment, as shown in fig. 6, the vertical piles 110 may be steel piles, and the upper side of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resistant to out-of-plane instability damage, although the upper side of the transverse ring support structure may be uncovered. 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 ring support structure is connected with the crown beam.

In another embodiment, as shown in fig. 7, the vertical piles 110 may be steel piles, and the upper side of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resistant to out-of-plane instability damage, although the upper side of the transverse ring support structure may be uncovered. The connecting portion is formed into a crown beam, the crown beam is an integral crown beam, and the transverse ring support structure 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. 8, the vertical piles 110 may be steel piles, and the upper side of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resistant to out-of-plane instability damage, although the upper side of the transverse ring support structure may be uncovered. 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 ring supporting structure 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. 9, the vertical piles 110 may be steel piles, and the upper side of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resistant to out-of-plane instability damage, although the upper side of the transverse ring support structure may be uncovered. 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 ring support structure 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. 10, the vertical piles 110 may be steel piles, and the upper side of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resistant to out-of-plane instability damage, although the upper side of the transverse ring support structure may be uncovered. The connecting portion comprises a crown beam and a waist beam, wherein the waist beam is connected with an inner supporting structure, and the transverse ring supporting structure 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. 11, the vertical piles 110 may be steel piles, and the upper side of the transverse ring support structure may be covered with soil, which may make the transverse ring support structure resistant to out-of-plane instability damage, although the upper side of the transverse ring support structure may be uncovered. 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 ring support structure is connected with the crown beam.

The lateral ring support structure 130 intersects the foundation pit such that at least a portion of the lateral ring support structure 130 is located outside the foundation pit and at least a portion of the lateral ring support structure 130 is located inside the foundation pit.

The transverse ring support structure is connected with the connecting part and/or the vertical blocking part, and a structural system with self-balancing performance is formed on the whole, so that the force applied by the vertical blocking part and/or the connecting part in the soil outside the foundation pit born by at least one part of the vertical blocking part and/or the connecting part can be balanced through the transverse ring support structure.

That is, the lateral loop support structure 130 is connected with the upper half of the vertical pile 110 and/or the connection 120; so as to apply to the upper half of vertical pile 110 and/or to connection 120 a first force that is intended to at least partially counteract the force applied to vertical pile 110 by the foundation pit perimeter soil (earthwork) to which vertical pile 110 is subjected, i.e. the first force is able to be resolved out of a force that is opposite to the direction in which the foundation pit perimeter soil (earthwork) is applied to vertical pile 110.

Specifically, the transverse ring support structure comprises: annular member 131, urging member 132, and the like.

The ring member 131 is formed as a frame of the lateral ring support structure 130, and the ring member 131 intersects the foundation pit such that at least part of the ring member 131 is located outside the foundation pit and at least part of the ring member 131 is located inside the foundation pit.

On the other hand, one end of the force applying member 132 is connected to the annular component 131, and the other end of the force applying member 132 is connected to the connecting portion 120 and/or the vertical blocking portion to apply a first force to the connecting portion 120 and/or the vertical blocking portion through the force applying member 132.

The annular member 131 may be formed by a single annular member, that is, it is prepared by integrally molding when the annular member 131 is manufactured. On the other hand, the ring-shaped member 131 may be formed by at least two lateral arch structures being connected to each other. At this time, the ring member 131 may be manufactured in a plurality of parts and assembled in the field.

That is, at least part of the ring member 131 can be formed in a fabricated structure, or at least part can be formed in a spliced and/or detachable reusable structure.

The part of the annular member 131 located inside the foundation pit is connected with the connecting part 120 and/or the vertical blocking part through a force application part 132, or the part of the annular member 131 located inside the foundation pit is supported in the soil through the force application part 132.

In consideration of the fact that the annular member 131 located in the foundation pit needs to apply a pushing force to the connection portion 120 and/or the vertical blocking portion, the force application member 132 is accordingly selected to be a steel rod, reinforced concrete and/or a steel structure, and therefore the first force applied by the force application member 132 to the connection portion 120 and/or the vertical blocking portion is a pushing force, and the connection portion 120 and the vertical blocking portion are made more stable by the pushing force.

Also, when there is no corresponding connection portion 120 or vertical blocking portion outside the portion of the annular member 131, that is, when there is an opening area in the periphery of the foundation pit, in order to allow the forces to which the annular member 131 is subjected to be balanced, the annular member 131 at the portion needs to apply a force to the surrounding soil, whereby the annular member 131 is supported in the soil by the urging means 132, and the urging means 132 needs to be selected as a member capable of transmitting a thrust force, such as a steel rod, reinforced concrete, or steel structure.

On the other hand, the portion of the annular member 131 located outside the foundation pit is connected with the connecting portion 120 and/or the vertical blocking portion through a force application component 132, wherein the force application component 132 is one or more of a guy cable, a pull rod, a steel cable, a steel rod, reinforced concrete or a steel structure, and the force applied by the force application component 132 to the connecting portion 120 and/or the vertical blocking portion is a tensile force; accordingly, the pull cables, pull rods, steel cables, steel bars, reinforced concrete or steel structures can transmit the pulling force.

In the present disclosure, the annular member 131 may be connected to the connection portion 120 and/or the vertical blocking portion at the intersection of the annular member 131 and the foundation pit. Thereby, the annular member 131 may also be formed integrally with the connection portion 120 and/or the vertical blocking portion, whereby the annular member 131 may not be provided with the urging means 132 at the connection portion with the connection portion 120 and/or the vertical blocking portion. On the other hand, the annular member 131 may not be connected to the connection portion 120 and/or the vertical blocking portion.

In the present disclosure, when the annular member 131 intersects the foundation pit, the annular member 131 can pass through a plane or an approximate plane formed by the vertical piles 110 and/or the connection portion 120.

On the other hand, the annular member 131 may also be connected to the foundation pit, and when the annular member 131 is connected to the foundation pit, the portion of the annular member 131 connected to the foundation pit is directly or indirectly connected to the connection portion 120, the vertical blocking portion, and/or the reinforcing blocking portion.

When the annular member 131 is connected with the foundation pit, the portion of the annular member 131 connected with the foundation pit is directly or indirectly connected with the connecting portion 120, the vertical pile 110 and/or the reinforcing barrier 140, and accordingly, if the stability of the foundation pit supporting structure 100 is already achieved without providing the force application part, the force application part may not be provided. Of course, when the annular member 131 is connected to the foundation pit, the portion of the annular member 131 connected to the foundation pit may not be connected to the connecting portion 120, the vertical piles 110 and/or the reinforcing barrier 140, or may be indirectly connected to the annular member 131, so that the annular member 131 may realize stability of the foundation pit supporting structure 100 through cooperation with other structural members, including the lateral force applying device 150, the inner support structure 160, the corner support structure 170, and the force applying component 132.

The structure of the present disclosure is described in detail below with reference to the accompanying drawings.

As shown in fig. 12, the annular member 131 of the lateral ring support structure 130 may be circular, the annular member 131 intersecting the foundation pit, and a majority of the annular member 131 being located outside the foundation pit; accordingly, a small portion of the annular member 131 is located inside the foundation pit; accordingly, there is a superposition of the annular member 131 and the foundation pit.

The ring-shaped member 131 is formed in a circular ring-shaped structure, the ring-shaped member 131 is connected to the connection part 120 through a force application part 132, in the force application part 132, the left, upper and lower force application parts 132 may be selected as a cable, the right force application part 132 is selected as a steel rod, and thus the ring-shaped member 131 can provide a supporting force to the connection part 120 located on the right side of the ring-shaped member 131 and a vertical blocking part connected to the connection part 120, and the vertical blocking part of the region is in a stable state.

On the other hand, in order to make the vertical blocking portion more stable, the foundation pit supporting structure of the annular support of the present disclosure may include an angle supporting structure 170, and the angle supporting structure 170 may be selectively disposed in at least one corner area of the foundation pit to apply a fourth force, on the one hand, by which the connection portion 120 can be made more stable, and on the other hand, by which the connection portion 120 can also be provided with a thrust force applied against the connection portion 120 in the soil direction around the foundation pit.

Specifically, one end of the corner support structure 170 is connected to the connection portion 120 or the vertical pile 110 on one side of the corner region of the foundation pit, and the other end of the corner support structure 170 is connected to the connection portion 120 or the vertical pile 110 on the other side of the corner region of the foundation pit, and the corner support structure 170 is arranged horizontally or obliquely at an angle to the horizontal.

In the present disclosure, the corner support structure 170 may be connected to the force application member 132, so that the entire corner support structure 170 and the force application member 132 together form a complete structure, and thus the support capability and stability of the foundation pit support structure of the entire annular support can be improved.

As shown in fig. 13, the annular member 131 of the lateral ring support structure 130 may be circular, the annular member 131 intersecting the foundation pit, and a majority of the annular member 131 being located outside the foundation pit; accordingly, a small portion of the annular member 131 is located inside the foundation pit; accordingly, there is a superposition of the annular member 131 and the foundation pit.

Unlike the structure of fig. 12, the foundation pit supporting structure of the annular support shown in fig. 13 is provided with reinforcing barriers 140 at corners of the foundation pit, where the reinforcing barriers 140 may be reinforcing piles, and the reinforcing piles may have a size, for example, a cross-sectional area greater than or equal to that of the vertical piles 110, and the reinforcing piles may be located at middle portions of edges of the foundation pit and/or at corner regions of the foundation pit, for example, at least one reinforcing pile may be located at a corner region of the foundation pit.

As shown in fig. 14, the annular member 131 of the lateral ring support structure 130 may be circular, the annular member 131 intersecting the foundation pit, and a majority of the annular member 131 being located outside the foundation pit; accordingly, a small portion of the annular member 131 is located inside the foundation pit; accordingly, there is a superposition of the annular member 131 and the foundation pit.

The ring-shaped supporting foundation pit supporting structure shown in fig. 14 is different from the structure in fig. 12 in that at least one inner supporting structure 160 is provided at the positions of two corresponding sides of the foundation pit, the inner supporting structure 160 being located inside the foundation pit and being used to apply a third force to the connection part 120 and/or the vertical piles 110 and/or the reinforcing piles; wherein the third force is a pushing force, whereby the connection 120 and/or the reinforcement barrier 110 may be made more stable by the inner support structure 160.

More preferably, one end of the inner support structure 160 is connected to the connection portion 120 and/or the vertical pile 110 and/or the reinforcing pile of one of the two corresponding sides of the foundation pit, while the other end of the inner support structure 160 is connected to the connection portion 120 and/or the vertical pile 110 and/or the reinforcing pile of the other of the two corresponding sides of the foundation pit, and the inner support structure 160 is disposed horizontally or obliquely at an angle to the horizontal.

Further, when at least one inner support structure 160 is provided, or it is affected by factors such as construction space and convenience in construction, too many inner support structures 160 cannot be provided to improve stability of the foundation pit supporting structure 100, at least one corner support structure 170 is provided to apply a fourth force to improve stability, one end of the corner support structure 170 is provided to the inner support structure 160 of the foundation pit, while the other end is used to apply the fourth force to the upper half portion of the vertical pile 110 or the reinforcing pile and/or the connecting portion 120 provided to the side portion of the foundation pit, and the corner support structure 170 is set to be horizontal or inclined at an angle to the horizontal.

As shown in fig. 15, the annular member 131 of the lateral ring support structure 130 may be circular, the annular member 131 intersecting the foundation pit, and a majority of the annular member 131 being located outside the foundation pit; accordingly, a small portion of the annular member 131 is located inside the foundation pit; accordingly, there is a superposition of the annular member 131 and the foundation pit.

The foundation pit supporting structure of the ring support shown in fig. 15 is different from the structure in fig. 12 in that the force applying part 132 for supporting the connection part 120 and/or the vertical blocking part 110 on the left side of the foundation pit is a steel rod, so that the ring member 131 can apply a pushing force to the connection part 120 and/or the vertical blocking part 110 through the steel rod.

On the other hand, at least a portion of the annular member 131 intersects the corner region of the foundation pit, so that the vertical piles 110 and/or the reinforcing piles forming the corner region of the foundation pit intersect the annular member 131, and the annular structure is not broken.

For example, when the reinforcing piles are intersected, the annular member 131 is formed into an annular shape as a whole, the reinforcing piles are in a non-broken structure, and the supporting force is provided by the joint of the reinforcing piles and the annular member 131, and the annular member 131 penetrates through the reinforcing piles and is combined with the reinforcing piles.

For example, when the vertical piles 110 are intersected, the annular member 131 is formed into a circular ring shape as a whole, the vertical piles 110 are in a non-broken structure, and the vertical piles 110 and the annular member 131 are jointly crossed and combined to provide supporting force, and the annular member 131 penetrates through the vertical piles 110 and is combined with the vertical piles 110.

As shown in fig. 16, the vertical piles 110 may also be steel sheet piles, and the foundation pit supporting structure 100 may select the vertical piles 110 to be cylindrical piles and/or steel sheet piles.

As shown in fig. 17, when the annular member 131 has a structure located outside the foundation pit with respect to each side portion of the foundation pit, a member capable of applying a tensile force such as a cable may be provided at the annular member 131 corresponding to each side portion, thereby enabling the connection portion 120 and/or the vertical blocking portion 110 of the foundation pit to be stably supported.

As shown in fig. 18 to 23, which disclose different implementations of the foundation pit supporting structure of the ring support, in particular, the ring member 131 may be formed in a non-circular shape, for example, the ring member 131 may be formed in an elliptical shape. Other structures of the foundation pit supporting structure of the annular support are the same as or substantially the same as those shown in fig. 12 to 17, and will not be described in detail here.

Fig. 24 and 25 show different foundation pit supporting structures of the annular support, as shown in fig. 24, the foundation pit may be formed to be open, or a portion of the foundation pit is not provided with vertical blocking portions and/or connecting portions 120, at which time the annular member 131 needs to apply force to the soil around the foundation pit so that the annular member 131 can be in a self-balancing state.

More specifically, the annular member 131 at the opening of the foundation pit or at a position where the vertical blocking portion and/or the connecting portion is not provided is provided with a force application part 132, the force application part 132 may be selected as a steel rod, reinforced concrete or a steel structure, and one end of the force application part 132 is connected to the annular member 131, and the other end of the force application part 132 is inserted into the earth around the foundation pit, so that a pushing force can be applied to the annular member 131 by the force application part 132 and the annular member 131 can be self-balanced.

As shown in fig. 25, for some working conditions, such as that the periphery of the foundation pit has a slope or a thicker soil layer, or that the foundation pit is located in a mountain area, etc., when the situation that the stress of the annular member 131 covered by the thick soil covering layer is larger, so that the stability of the foundation pit supporting structure 100 is unfavorable, besides the combined implementation of various structures and connection relations of the previous embodiments, some ways may be adopted in the arrangement of the annular member 131, for example, as shown in fig. 25, for the annular member 131 covered by soil at the slope 200, a way of increasing the side area of the annular member 131 and the strength of the earth (soil) are balanced, or a way of obliquely arranging the annular member 131 and the strength of the earth (soil) are balanced, so that the stability of the foundation pit supporting structure 100 can be realized.

As another implementation, the ring-supported foundation pit supporting structure 100 further includes a reinforcement barrier 140, and in one embodiment, the reinforcement barrier 140 may be formed as a reinforcement pile. Of course, the reinforcement stopper 140 may be formed as a wall or the like.

The reinforcing barrier 140 may have a size equal to or greater than that of the vertical piles 110, or may increase the number of the reinforcing barriers 140, and/or the reinforcing barriers 140 may be located at a middle portion of a side portion of the foundation pit and/or at a corner region of the foundation pit, so that the supporting capacity of the weak region of the foundation pit may be improved, so that the foundation pit supporting structure of the ring-shaped support may have higher stability, or a reinforcing region may be specially constructed to replace the horizontal support or the diagonal 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.

The number of the reinforcing blocking parts may be equal to or greater than that of the vertical blocking parts, so that the supporting capacity of the vertical blocking parts can be improved by the reinforcing blocking parts. In one embodiment, the reinforcement barrier 140 may be a reinforcement pile or a continuous wall for reinforcement.

To further improve the supporting stability of the vertical pile 110, in the present disclosure, the foundation pit supporting structure 100 of the annular 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 120, 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 using the lateral force application device 150, a second force to the vertical pile 110 and/or the connection portion 120, where the second 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 second 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 (earth).

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 third force to the connection 120 and/or the vertical piles 110, the third force being adapted to at least partially counteract the forces exerted by the foundation pit periphery soil (earth) that the vertical piles 110 are subjected to the vertical piles 110, i.e. the third force being able to be decomposed into forces opposite to the direction of the forces exerted by the foundation pit periphery soil (earth) to the vertical piles 110.

As a specific implementation, the inner support structure 160 includes: at least one of a single-layer truss structure, a multi-layer truss structure, a steel pipe structure, a reinforced concrete supporting structure, a diagonal bracing structure and a steel pipe diagonal bracing to improve stability of the foundation pit supporting structure of the annular support through arrangement of the inner supporting structure 160.

More preferably, the foundation pit supporting structure 100 of the annular 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 fourth force to at least one upper half of a vertical pile 110 and/or a connection 120 arranged at the corner region of said foundation pit by means of said corner support structure 170; 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 fourth force to the upper half and/or the connection portion 120 of the vertical pile 110 disposed on the side portion of the foundation pit, wherein the fourth force is configured to at least partially counteract a force applied to the vertical pile 110 by the foundation pit periphery soil received 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, the two connection parts 120 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 part 120 of the two connection parts 120, and the corner support structure 170 may be disposed horizontally or inclined at a certain angle with respect 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.

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 120, so that the inner support structure 160 is stably supported on the connection portion 120 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.

Moreover, the transverse ring supporting structure 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.

In the present disclosure, the upper portion of the lateral ring support structure is earthed, and/or the lateral ring support structure is provided with a counterweight, and/or the lateral ring support structure is anchored in the earth to prevent out-of-plane destabilization damage of the lateral ring support structure.

The annular member adopts at least one or more of reinforced concrete cast-in-situ or prefabricated, steel pipes, steel structures, spliced and detachable reusable structures.

The annular member is in a regular annular structure or an irregular annular structure; and/or the annular member is a constant-section annular member or a variable-section annular member; and/or the annular component is horizontally arranged or obliquely arranged or is in high-low fluctuation.

In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "a particular example," "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 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" means at least two, for example, two, three, etc., unless specifically 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. A foundation pit supporting structure of annular bracing, comprising:

2. A foundation pit supporting structure of an annular support according to claim 1, wherein the annular member is formed as a single annular member, or the annular member is formed by at least two transverse arch structures being interconnected, or the annular member is of unitary construction or at least partly of assembled construction, or at least partly of a construction which is spliced and/or detachably reusable.

3. The foundation pit supporting structure of an annular support according to claim 1, wherein the part of the annular component located inside the foundation pit is connected with the connecting part and/or the vertical blocking part through a force application part, or the part of the annular component located inside the foundation pit is supported in soil through a force application part, wherein the force application part is selected from a steel rod, reinforced concrete and/or a steel structure, and the force applied by the force application part to the connecting part and/or the vertical blocking part is thrust.

4. The foundation pit supporting structure of an annular support according to claim 1, wherein the portion of the annular member located outside the foundation pit is connected with the connecting portion and/or the vertical blocking portion through a force application member, wherein the force application member is one or more of a guy cable, a pull rod, a steel cable, a steel rod, reinforced concrete or a steel structure, and the force applied by the force application member to the connecting portion and/or the vertical blocking portion is a tensile force.

5. The loop-supported foundation pit support structure of claim 1, wherein the loop-shaped member is connected or disconnected to the connection and/or vertical barrier at the intersection of the loop-shaped member and the foundation pit.

6. The loop-supported pit support structure of claim 1, wherein when the loop-shaped member is joined to the pit, the portion of the loop-shaped member joined to the pit is directly or indirectly joined to the connection, vertical barrier and/or reinforcement barrier.

7. A foundation pit supporting structure of an annular bracing according to any one of claims 1-6, wherein the size of the vertical barriers provided is increased or the density or number of vertical barriers provided is increased at the middle part of the sides of the foundation pit and/or the corner areas of the foundation pit and/or the area of the cross section of the connection provided at the middle part of the sides of the foundation pit and/or the corner areas of the foundation pit is increased.

8. The loop-supported foundation pit support structure of any one of claims 1-6, further comprising:

9. The loop-supported foundation pit support structure of any one of claims 1-6, further comprising:

10. The loop-supported foundation pit support structure of any one of claims 1-6, further comprising:

11. The loop-supported foundation pit support structure of claim 10, wherein the inner support structure is configured to apply the third force to a middle portion of a side of the foundation pit.

12. The loop-supported foundation pit support structure of any one of claims 1-6, further comprising:

13. The loop-supported foundation pit supporting structure of any one of claims 1-6, wherein the connection portion comprises a crown beam and/or a wale, wherein the crown beam is disposed on top of the vertical barrier portion and/or the wale is disposed at a portion between both ends of the vertical barrier portion.

14. The ring supported foundation pit support structure of claim 13, wherein the crown beams and/or wales are supported to the bottom of the foundation pit by inner diagonal braces.

15. The loop-supported pit supporting structure of any one of claims 1-6, wherein the cross section of the pit is rectangular, square, curved, folded line-shaped or polygonal, or at least a portion of the pit is open-ended, or the sides of the cross section of the pit comprise at least straight line segments and/or curved line segments.

16. The loop-supported foundation pit support structure of any one of claims 1-6, wherein the vertical barrier and/or the reinforcement barrier is selected from at least one or more of a reinforced concrete cast-in-place pile, a precast reinforced concrete sheet pile, a tubular pile, a steel sheet pile, a steel pipe pile, a cement pile, a section steel cement concrete mixing wall, and a reinforced concrete wall.

17. A foundation pit supporting structure for a ring support as claimed in any one of claims 1 to 6 wherein the upper part of the transverse ring support structure is earthed and/or the transverse ring support structure is provided with a counterweight and/or the transverse ring support structure is anchored in the earth to prevent out-of-plane instability damage to the transverse ring support structure.

18. The loop-supported foundation pit support structure of any one of claims 1-6, wherein the loop-shaped member is at least one or more of reinforced concrete cast-in-place or prefabricated, steel pipe, steel structure, spliced, removable re-use structure.

19. The annular bracing foundation pit support structure according to any one of claims 1 to 6, wherein the annular member has a regular annular structure or an irregular annular structure; and/or the annular member is a constant-section annular member or a variable-section annular member; and/or the annular component is horizontally arranged or obliquely arranged or is in high-low fluctuation.