CN117286882A - Pit supporting structure of pit outer transverse support - Google Patents

Abstract

The present disclosure provides a foundation pit support structure that is laterally supported outside the pit, which includes: a vertical blocking part, which is provided on at least a part of the periphery of the foundation pit; and a connecting part, which is provided To the vertical blocking part, at least part of the vertical blocking part is connected to the vertical blocking part through the connecting part; and a transverse suspension cable structure, the transverse suspension cable structure is arranged on at least one side of the foundation pit. At least some areas.

Description

Foundation pit support structure with lateral support outside the pit

Technical field

The present disclosure relates to a foundation pit supporting structure that is laterally supported outside the pit, and belongs to the field of construction technology.

Background technique

During the construction of buildings or underground structures, open excavation operations are generally performed on the ground to form foundation pits. In the prior art, vertical piles are often installed around the foundation pit and foundation pit support structures with horizontal supports are installed in the pit to prevent the soil around the foundation pit from collapsing.

Structurally speaking, the foundation pit support of current buildings mostly uses vertical supporting piles plus horizontal supports or cable-stayed anchors in the pit to resist the thrust of the soil outside the pit. The horizontal supports in the foundation pit hinder the construction and are very costly. After the basement construction is completed, the horizontal supports will also need to be removed. Moreover, during the construction of horizontal supports, the expenditure of manpower and material resources is staggering, which also results in a very long construction period.

Although cable-stayed anchors also provide a structure that resists soil thrust, the soil quality is often not ideal, and they have to extend far beyond the building foundation pit to obtain limited resistance. Extending too far is not allowed, and it is too short and unreliable. , it is easy to cause the collapse of the entire soil mass. In reality, foundation pit collapse accidents often occur, causing road collapse or personal injury.

The above two existing technologies require a large one-time investment. After the basement is completed, its mission is completed and cannot be reused, which is a huge waste.

Contents of the invention

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

According to one aspect of the present disclosure, a foundation pit support structure with lateral support outside the pit is provided, which includes:

A vertical blocking part, the vertical blocking part is provided on at least a part of the periphery of the foundation pit;

a connecting portion, the connecting portion is provided on the vertical blocking portion to connect at least part of the vertical blocking portion of the vertical blocking portion through the connecting portion; and

A transverse suspension cable structure is provided in at least a partial area of at least one side of the foundation pit.

According to at least one embodiment of the present disclosure, a foundation pit support structure with lateral support outside the pit, the lateral suspension structure includes a lateral support member, and the lateral support member at least includes a first lateral support member and a third lateral support member, so The first lateral support member and the third lateral support member are both connected to the connecting portion to support the first lateral support member and the third lateral support member through the connecting portion.

According to at least one embodiment of the present disclosure, the foundation pit support structure is laterally supported outside the pit, and the lateral suspension cable structure includes a suspension cable, and the suspension cable is provided on the first lateral support member and the third lateral support member.

According to at least one embodiment of the present disclosure, the foundation pit support structure is laterally supported outside the pit. The transverse suspension cable structure includes a force applying member, one end of the force applying member is provided on the suspension cable, and the force applying member has The other end is provided at the connecting portion so as to apply pulling force and/or pushing force to the connecting portion through the force applying member, and the pulling force and/or pushing force exerted by the force applying member at least partially offsets the vertical blocking. The force exerted by the soil around the foundation pit on the vertical blocking part.

According to the foundation pit support structure with horizontal support outside the pit according to at least one embodiment of the present disclosure, the connecting portion at least includes a first connecting portion, and the first lateral support member and the third lateral support member are both provided on the first The connecting part is such that the first force exerted by the first transverse support member on the first connecting part has a force perpendicular to the extension direction of the first connecting part; the third transverse support member exerts a force perpendicular to the extending direction of the first connecting part; The first force exerted by the first connecting part is a force perpendicular to the extension direction of the first connecting part.

According to the foundation pit support structure laterally supported outside the pit according to at least one embodiment of the present disclosure, the connection part includes at least a first connection part, a second connection part and a third connection part, wherein the second connection part and the third connection part The three connecting parts are all connected to the first connecting part, so that there is a preset angle between the second connecting part and the first connecting part, and there is a preset angle between the third connecting part and the first connecting part. angle.

According to the foundation pit support structure with horizontal support outside the pit according to at least one embodiment of the present disclosure, the first transverse support member is provided at the second connection part, and the first transverse support member is directed toward the second connection part. The applied first force is a force parallel to the extension direction of the second connecting portion, and the reaction force of the first force forms at least part of the supporting force of the second connecting portion on the first transverse support; the third The transverse support member is disposed on the third connection part, so that the third force exerted by the third transverse support member on the third connection part has a force parallel to the extension direction of the third connection part, and the third The reaction force of the acting force forms at least part of the supporting force of the third connecting portion on the third transverse support member.

According to the foundation pit support structure with lateral support outside the pit according to at least one embodiment of the present disclosure, the lateral support member further includes: a second lateral support member, the second lateral support member is connected to the first connecting part, and The second force applied by the second transverse support member to the first connection part can be transmitted along the length direction of the first connection part; the first transverse support member and the second transverse support member are connected by parts are connected.

According to the foundation pit support structure laterally supported outside the pit according to at least one embodiment of the present disclosure, a vertical blocking portion is added to the middle part of the edge of the foundation pit and/or the corner area of the foundation pit. The size or increase the density or number of vertical barriers provided, and/or the cross-section of the connecting portions provided at the middle portion of the sides of the foundation pit and/or the corner areas of the foundation pit area increases.

The foundation pit support structure with lateral support outside the pit according to at least one embodiment of the present disclosure also includes:

Strengthen the blocking part, the size of the strengthening blocking part is greater than or equal to the vertical blocking part, or increase the number of the strengthening blocking parts; and/or, the strengthening blocking part is located in the middle part of the edge of the foundation pit and/or Or located in the corner area of the foundation pit.

The foundation pit support structure with lateral support outside the pit according to at least one embodiment of the present disclosure also includes:

A transverse force applying device, one end of the transverse force applying device is fixed to the vertical blocking part and/or the connecting part, and at least part of the transverse force applying device is located in the soil around the foundation pit so as to pass through the The lateral force applying device applies a fourth force to the vertical blocking part and/or the connecting part. The fourth force is used to at least partially offset the soil around the foundation pit that the vertical blocking part bears to the vertical blocking part. The force exerted.

The foundation pit support structure with lateral support outside the pit according to at least one embodiment of the present disclosure also includes:

Internal support structure, the internal support structure is located inside the foundation pit and is used to apply a fifth force to the connecting part and/or the vertical barrier part, the fifth force is used to at least partially offset the The vertical blocking part bears the force exerted by the soil around the foundation pit on the vertical blocking part.

According to at least one embodiment of the present disclosure, the foundation pit support structure is laterally supported outside the pit, and the inner support structure is used to apply the fifth acting force to the middle part of the edge of the foundation pit.

The foundation pit support structure with lateral support outside the pit according to at least one embodiment of the present disclosure also includes:

A corner support structure, the corner support structure is provided in the corner area of the foundation pit, so that the upper half of the vertical blocking portion and the /or the connecting portion exerts a sixth force; and/or the angle support structure is provided on the inner support structure and is used to provide support to the upper half of the vertical blocking portion provided on the edge of the foundation pit and/or The connecting portion exerts a sixth force, wherein the sixth force is used to at least partially offset the force exerted by the soil surrounding the foundation pit on the vertical blocking portion that the vertical blocking portion bears.

According to the foundation pit support structure laterally supported outside the pit according to at least one embodiment of the present disclosure, the connection part includes a crown beam and/or a waist beam, wherein the crown beam is provided on the top of the vertical blocking part, and /Or, the waist beam is provided at a portion between two ends of the vertical blocking portion.

According to at least one embodiment of the present disclosure, the foundation pit support structure is laterally supported outside the pit, and the crown beam and/or waist beam is supported on the bottom of the foundation pit through internal diagonal braces.

According to at least one embodiment of the present disclosure, the foundation pit support structure is laterally supported outside the pit. The cross section of the foundation pit is rectangular, square, curved, polygonal or polygonal, or at least a part of the foundation pit is open-shaped. , or the edge of the cross-section of the foundation pit at least includes a straight line segment and/or an arc segment.

According to at least one embodiment of the foundation pit support structure with horizontal support outside the pit, the vertical blocking part and/or reinforced blocking part is selected from the group consisting of reinforced concrete cast-in-place piles, precast piles, precast reinforced concrete sheet piles, pipe piles, At least one or more of steel sheet piles, steel pipe piles, cement-soil piles, cement-soil gravel piles, steel-cement-soil mixing walls and reinforced concrete walls.

According to at least one embodiment of the present disclosure, a foundation pit support structure with lateral support outside the pit, the lateral support member is an integral structure or at least partially an assembled structure, or at least partially a structure that can be assembled and/or disassembled for reuse. ; And/or, the transverse support member is arranged outside the foundation pit; and/or, the transverse suspension structure is a steel structure or a reinforced concrete structure.

According to the foundation pit support structure with horizontal support outside the pit according to at least one embodiment of the present disclosure, the force-applying member is one or more of a cable, a tie rod, a steel cable, a steel rod, or a steel structure.

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

Description of drawings

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

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

12 to 15 are structural schematic diagrams of a foundation pit support structure that is laterally supported outside the pit according to different embodiments of the present disclosure.

The specific reference signs in the figure are:

Foundation pit support structure with lateral supports outside the 100 pit

110 vertical piles

120 connection part

121 first connection part

122 second connection part

123 Third connection part

130 transverse supports

131 first transverse support

132 Second transverse support

133 Third transverse support

137 connector

138 suspension rope

139 Force application piece

140 strengthen blocking part

150 lateral force device

160 inner support structure

170 angle support structure

180 waist beam

190 internal diagonal braces.

Detailed ways

The present disclosure will be described in further detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific implementations described here are only used to explain the relevant content, but are not intended to limit the present disclosure. It should also be noted that, for convenience of description, only parts related to the present disclosure are shown in the drawings.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

Unless otherwise specified, the illustrated exemplary embodiments/examples are to be understood as exemplary features providing various details of some manner in which the technical concepts of the present disclosure may be implemented in practice. Therefore, unless otherwise stated, features of various embodiments/embodiments may be additionally combined, separated, interchanged and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in drawings is often used to make boundaries between adjacent parts clear. As such, unless stated otherwise, the presence or absence of cross-hatching or shading does not convey or indicate any knowledge of the specific materials, material properties, dimensions, proportions, commonalities between the components shown and/or any other characteristics of the components, Any preferences or requirements for attributes, properties, etc. Furthermore, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially concurrently or in the reverse order of that described. In addition, the same reference numerals represent the same components.

When an element is referred to as being "on," "on," "connected to" or "coupled to" another element, it can be directly on, directly connected to, or directly connected to the other element. Either directly coupled to said other component, or intervening components 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 purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

For descriptive purposes, the present disclosure may use terms such as “under,” “under,” “under,” “under,” “over,” “on,” “on.” Spatially relative terms, such as "on", "higher" and "side (e.g., as in "sidewall"), are used to describe one component in relation to another (other) component as illustrated in the figures Relationship. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass various orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" may encompass both orientations "above" and "below." Furthermore, the device may be otherwise oriented (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 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 "includes" and variations thereof are used in this specification, it is stated that the stated features, integers, steps, operations, parts, components and/or groups thereof are present but not excluded. One or more other features, integers, steps, operations, parts, components and/or groups thereof are present or appended. It is also noted that, as used herein, the terms "substantially," "approximately," and other similar terms are used as terms of approximation and not as terms of degree, and as such, they are used to explain what one of ordinary skill in the art would recognize. Inherent deviations from measured, calculated and/or supplied values.

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

As shown in Figures 1 to 11, the foundation pit support structure 100 for horizontal support outside the pit of the present disclosure includes: a vertical blocking part, a connecting part 120, a transverse suspension structure and other components.

In the present disclosure, the vertical blocking part may be a vertical pile 110 , and the vertical pile 110 is disposed on at least a part of the periphery of the foundation pit; so that the vertical pile 110 blocks the periphery of the foundation pit. Earthwork to prevent the earth from collapsing. In another embodiment, the vertical blocking part may also be a structure such as a vertical continuous wall.

When the disclosed foundation pit support structure with horizontal support outside the pit is actually used, on the one hand, the vertical piles 110 are at least partially installed before excavation of the foundation pit; on the other hand, when the foundation pit is constructed or after the construction is completed, Vertical piles 110 are provided around the foundation pit.

The vertical pile 110 can be a cylindrical pile or a steel sheet pile; when the vertical pile 110 is a cylindrical pile, the cylindrical pile can be a prefabricated pile or a cast-in-place pile, and the prefabricated pile can also be prefabricated with reinforced concrete. Piles or steel piles, and preferably steel piles, to facilitate the installation of the foundation pit support structure 100 that is laterally supported outside the pit, and the vertical piles 110 can be reused multiple times.

The steel sheet pile is a prefabricated steel structure. When the steel sheet pile is used to retain soil, the length direction of the steel sheet pile is the height direction after installation. A connecting structure is formed in the width direction of the steel sheet pile, so that the connecting structure can Allowing adjacent steel sheet piles to be connected.

In actual use, the vertical piles 110 can be placed close to each other to prevent earth from entering the foundation pit through the gaps between the vertical piles 110, causing safety problems such as personal injury.

Of course, there can also be a certain gap between two adjacent vertical piles. Preferably, when the gap between two adjacent vertical piles is larger, there needs to be a gap between the two vertical piles. Set up a structure to retain the earth, or solidify the earth to form a pile wall retaining structure to prevent the earth from collapsing.

In the present disclosure, the size, density, or number of vertical piles installed in some weak areas or areas with relatively large stress in the foundation pit increases.

Wherein, the weak area of the foundation pit may be the middle part of the edge of the foundation pit or the corner area of the foundation pit. For example, when the length of the edge of the foundation pit is greater than a certain preset value, the middle part of the edge of the foundation pit can be considered to be a weak area. On the other hand, the corner areas of the foundation pit usually receive relatively large and complex forces, which are all weak areas of the foundation pit.

Moreover, the increase in the size of the vertical pile specifically includes: when the vertical pile is a cylindrical pile, the diameter of the vertical pile can be increased, that is, the diameter of the vertical pile located in the weak area is larger than that outside the weak area. the diameter of the vertical pile; accordingly, when the vertical pile is a structure such as a steel sheet pile, the thickness or outline size of the steel sheet pile can be increased, that is, the thickness or outline size of the steel sheet pile located in the weak area is greater than The thickness or profile dimensions of vertical devices outside the weak area.

On the other hand, the increase in the density of the vertical piles may include: the spacing between the vertical piles in 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 When they are arranged closely together, the vertical piles inside the weak area can be arranged in multiple columns or rows, so that the number of vertical piles per unit area in the weak area is greater than the number of vertical piles per unit area outside the weak area. Number of piles.

Furthermore, the increase in the number of vertical piles can be reflected in an increase in the density of the vertical piles or the provision of multiple rows and columns of vertical piles, thereby enhancing the vertical blocking portion.

The connecting portion is provided on the vertical pile 110 to connect at least part of the vertical pile 110 through the connecting portion. In the present disclosure, the connection part includes a crown beam and/or a waist beam 180, wherein the crown beam is disposed on the top of the vertical pile 110, and/or the waist beam 180 is disposed on the vertical pile 110. The portion between the two ends of pile 110. More preferably, the crown beam and/or waist beam 180 can be supported on the bottom of the foundation pit through internal diagonal braces 190 . In the present disclosure, the crown beam and/or waist beam may be a steel structure or a reinforced concrete structure.

In the present disclosure, a plurality of the connecting parts may be provided, and each connecting part connects at least part of the vertical piles 110 , and these connecting parts may be connected to each other, so that the connecting parts are formed as A whole. Of course, the connection part can also be formed at one time. For example, after the vertical pile 110 is correctly set, the connection part is formed by concrete pouring.

On the other hand, the connecting portion can also be formed as a steel member. In this case, the connecting portion can be connected to the top of the vertical pile 110 through a connecting structure, so that the vertical pile 110 and the connecting portion are formed as A whole.

As defined above, in the present disclosure, the cross-sectional area of the connecting portion provided in some weak areas of the foundation pit is increased, and the cross-section is a vertical plane perpendicular to the extending direction of the connecting portion or a substantially vertical flat. This can increase the load limit of the connection near the weak area to improve the stability of the foundation pit support structure that is laterally supported outside the pit.

Similar to the above content, the weak area of the foundation pit may be the middle part of the edge of the foundation pit or the corner area of the foundation pit. For example, when the length of the edge of the foundation pit is greater than a certain preset value, the middle part of the edge of the foundation pit can be considered to be a weak area. On the other hand, the corner areas of the foundation pit usually receive relatively large and complex forces, which are all weak areas of the foundation pit.

In the present disclosure, the connecting portion is preferably a reusable structure or a partially reusable structure, thereby enabling at least part of the foundation pit foundation structure of the present disclosure to be reused.

In addition, as shown in Figure 5, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can make the transverse suspension structure resist out-of-plane instability damage. Of course, the transverse suspension structure The top of the structure may not be covered with soil. The connecting part is formed into a crown beam, the crown beam is an integrated crown beam, and the transverse suspension structure is connected to the crown beam.

In another embodiment, as shown in Figure 6, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can enable the transverse suspension structure to resist out-of-plane instability damage. Of course, The top of the transverse suspension cable structure may not be covered with soil. The connecting part is formed as a crown beam, and the crown beam is formed into two, and the top of the steel pile is clamped by the two crown beams. The connecting part can adopt a structure such as I-beam, channel steel, reinforced concrete or steel pipe. to fulfill. The transverse suspension cable structure is connected to the crown beam.

In another embodiment, as shown in Figure 7, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can enable the transverse suspension structure to resist out-of-plane instability damage. Of course, The top of the transverse suspension cable structure may not be covered with soil. The connecting part is formed into a crown beam, the crown beam is an integrated crown beam, and the transverse suspension structure is connected to the crown beam. More preferably, the connection part can be realized by using a structure such as I-beam, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in Figure 8, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can enable the transverse suspension structure to resist out-of-plane instability damage. Of course, the vertical piles 110 can be steel piles. The top of the transverse suspension cable structure may not be covered with soil. The connection part includes a crown beam and a waist beam. The crown beam is connected to a transverse force applying device (anchor rod). The waist beam is also connected to a transverse force applying device (anchor rod). The transverse suspension cable structure is connected to the crown beam. Beams are connected. More preferably, the connection part can be realized by using a structure such as I-beam, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in Figure 9, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can enable the transverse suspension structure to resist out-of-plane instability damage. Of course, The top of the transverse suspension cable structure may not be covered with soil. The connection part includes a crown beam and a waist beam, the crown beam is connected to an inner support structure, and the waist beam is also connected to an inner support structure, wherein the crown beam and the inner support structure connected to the waist beam are connected to each other. , forming a multi-layer internal support structure. The transverse suspension cable structure is connected to the crown beam. More preferably, the connection part can be realized by using a structure such as I-beam, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in Figure 10, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can enable the transverse suspension structure to resist out-of-plane instability damage. Of course, The top of the transverse suspension cable structure may not be covered with soil. The connection part includes a crown beam and a waist beam, the waist beam is connected to an inner support structure, and the transverse suspension structure is connected to the crown beam. More preferably, the connection part can be realized by using a structure such as I-beam, channel steel, reinforced concrete or steel pipe.

In another embodiment, as shown in Figure 11, the vertical piles 110 can be steel piles, and the top of the transverse suspension structure can be covered with soil. The covering of soil can enable the transverse suspension structure to resist out-of-plane instability damage. Of course, The top of the transverse suspension cable structure may not be covered with soil. The connection part includes a crown beam and a waist beam. The crown beam is formed into two, and the top of the steel pile is clamped by the two crown beams. The waist beam is connected to an internal support structure. The connection part can be made of engineering. It can be realized by structures such as beam steel, channel steel, reinforced concrete or steel pipes. The transverse suspension cable structure is connected to the crown beam.

12 to 15 are structural schematic diagrams of a foundation pit support structure that is laterally supported outside the pit according to different embodiments of the present disclosure.

In the present disclosure, as shown in FIGS. 12 to 15 , considering that the number of connecting parts 120 may be multiple, the connecting parts may include a first connecting part 121 , a second connecting part 122 and a third connecting part 123 , of course. , the connecting part may also include other connecting parts.

The second connecting part 122 and the third connecting part 123 are respectively connected to both ends of the first connecting part 121, so that there is a preset angle between the second connecting part 122 and the first connecting part 121, And there is a preset angle between the third connecting part 123 and the first connecting part 121 . In the present disclosure, the preset angle may be 90°, that is, the second connecting part 122 and the third connecting part 123 are both perpendicular to the first connecting part 121 and located on the same side of the first connecting part 121; Of course, the preset angle can also be other angle values, and the preset angle can be adjusted according to the shape of the land and the shape of the building, which will not be described again here.

On the other hand, the first connecting part 121 , the second connecting part 122 and the third connecting part 123 may be formed as the same component, or may be integrally formed by concrete or reinforced concrete.

The transverse suspension cable structure is provided in at least a partial area of at least one side of the foundation pit. In one embodiment, the transverse suspension cable structure may include structures such as transverse support members, suspension cables, and force applying members.

In the present disclosure, the lateral support member may be provided with at least one lateral support member. For example, the lateral support member may include a first lateral support member 131 . Of course, the lateral support member may also include a second lateral support member 132 and a third lateral support member 132 . Support member 133 and other lateral support members.

In the present disclosure, the first lateral support member 131 and the third lateral support member 133 are both connected to the connection portion to support the first lateral support member 131 and the third lateral support member 133 through the connection portion.

In one implementation form, the first transverse support member 131 and the third transverse support member 133 may both be disposed on the first connection part 121 such that the first transverse support member 131 faces the first connection part 121 . The first force applied is a force perpendicular to the extension direction of the first connecting portion 121; the third force exerted by the third transverse support member to the first connecting portion is perpendicular to the first connecting portion. The force in the extension direction of the connecting part.

In another implementation form, the first transverse support member 131 is disposed on the second connection part 132 such that the first force applied by the first transverse support member 131 to the second connection part 132 is parallel. The force in the extension direction of the second connecting part 132 and the reaction force of the first force form at least part of the supporting force of the second connecting part 132 on the first lateral support member 131; the third lateral support member 133 is provided on the third connecting part 123, and the third force exerted by the third transverse support member 133 on the third connecting part 123 has a force parallel to the extension direction of the third connecting part 123, and the third The reaction force of the acting force forms at least part of the supporting force of the third connecting portion 123 on the third transverse support 133 .

That is to say, the length direction of the first lateral support member 131 may be consistent with the length direction of the second connecting part 122 , or the length direction of the first lateral support member 131 may be consistent with the length direction of the second connecting part 122 The included angle in the length direction is within 30°, so that when the first transverse support 131 applies pressure to the second connection part 122, the pressure can be transmitted to the foundation pit through the second connection part 122 The surrounding earthwork, in other words, the second connecting portion 122 provides supporting force to the first transverse support member 131 .

More preferably, in the present disclosure, the second transverse support member 132 is disposed on the first connection part 121, so that the second effect exerted by the second transverse support member 132 on the first connection part 121 is Force can be transmitted along the length direction of the first connection part 121 . That is to say, the length direction of the second lateral support member 132 may be consistent with the length direction of the first connecting part 121 , or the length direction of the second lateral support member 132 may be consistent with the length direction of the first connecting part 121 The included angle in the length direction is within 30°, so that when the second transverse support 132 applies pressure to the first connecting part 121, the pressure can be transmitted to the foundation pit through the first connecting part 121 The surrounding earthwork, or at least a self-balancing part, in other words, the first connecting portion 121 provides supporting force to the second transverse support 132 .

Of course, the second lateral support member 132 can also be fixed to the second connecting portion 122 , and of course the second connecting portion 122 can provide supporting force to the second lateral support member 132 .

The suspension cable 138 is provided on the first transverse support member 131 and the third transverse support member 133 . In the present disclosure, the suspension cable 138 may be located entirely outside the foundation pit, or may be partially located outside the foundation pit and partially located inside the foundation pit. In one embodiment, the suspension cable 138 may be made of steel cables or steel structures.

At this time, the foundation pit support structure 100 laterally supported outside the pit of the present disclosure may also include a force applying member 139. One end of the force applying member 139 is provided on the suspension cable 138, and the other end of the force applying member 139 is provided on the first connecting portion 121 so as to apply a pulling force and/or a pushing force to the first connecting portion 121 through the force applying member 139, and the pulling force and/or pushing force exerted by the force applying member 139 is at least partially The force exerted by the soil around the foundation pit on the vertical pile 110 is offset. In the present disclosure, the force-applying member may be one or more of a cable, a tie rod, a steel cable, a steel rod, or a steel structure; when the force-applying member bears tensile force, a cable, a tie rod, a steel cable, or a cable may be used. , steel rods or steel structures. Correspondingly, when the force-applying member needs to withstand pressure, objects such as steel rods or steel structures that can withstand pressure can be selected.

Specifically, when the suspension cable 138 and the transverse support member are located on the same side (inside or outside) of the connection part, the force applying member applies a pulling force to the connection part; when part of the suspension cable 138 is located on one side of the connection part, the suspension cable 138 When the other part of 138 is located on the other side of the connecting part, at this time, the part of the force applying member located outside the connecting part (outside of the foundation pit) exerts a pulling force on the connecting part, and the part located inside the connecting part (inside the foundation pit) A portion of the force-applying member applies thrust to the connecting portion.

That is to say, the pulling force or pushing force exerted by the force applying member can be decomposed into a force in the opposite direction to the force exerted by the soil (earthwork) around the foundation pit on the vertical pile 110 .

That is to say, during the construction of the foundation pit, the vertical piles 110 around the foundation pit exert a force in one direction toward the inside of the foundation pit. When this force is greater than the load limit of the vertical piles 110, the vertical piles 110 around the foundation pit will The earthwork will collapse, causing major safety accidents.

However, in the present disclosure, through the arrangement of the transverse suspension structure, the force exerted by the soil (earthwork) around the foundation pit on the vertical pile 110 can be at least partially offset, thereby improving the stability of the vertical pile 110 . Furthermore, considering that the connecting portion is provided at the upper end of the vertical pile 110 and the lateral support member is connected to the connecting portion, the third force exerted by the lateral support member to the connecting portion is The action point of a tensile force is located at the upper end of the vertical pile 110 to further improve the stability of the vertical pile 110 .

Of course, the connecting portion can also be located at the middle area of the vertical pile 110 and other positions, and the lateral support member can also be provided at the middle area and other positions of the vertical pile 110 , which will not be described again here. .

The first transverse support member 131 and the second transverse support member 132 are connected through a connecting member 137, thereby making it easier to realize force communication between the first transverse support member 131 and the second transverse support member 132. balance to prevent the first transverse support member 131 and/or the second transverse support member 132 from being damaged such as bending. In the present disclosure, the connector 137 may be at least one of a cable, a tie rod, a support rod, a steel structure, a reinforced concrete slab, a reinforced concrete beam, and a reinforced concrete structure.

The third lateral support member 133 of the present disclosure may be disposed in the middle of the connection part. At this time, an inner support structure is provided at the position of the third lateral support member 133 to at least partially offset the third lateral support through the inner support structure. The force exerted by the member 133 to the connecting part.

Figure 13 is a schematic structural diagram of a foundation pit support structure laterally supported outside the pit according to different embodiments of the present disclosure.

As shown in Figure 13, the vertical piles 110 can be selected as steel sheet piles.

Preferably, the foundation pit support structure 100 laterally supported outside the pit also includes a reinforced blocking part 140, the size of the reinforced blocking part 140 is greater than or equal to the vertical pile 110, or the number of the reinforced blocking parts 140 is increased, And/or, the reinforced blocking portion 140 is located in the middle part of the edge of the foundation pit and/or is located in the corner area of the foundation pit, thereby improving the support capacity of the weak area of the foundation pit, Make the foundation pit support structure with lateral supports outside the pit more stable, or create a specially reinforced area to replace horizontal supports or diagonal supports.

On the other hand, the reinforced blocking portion 140 is also provided between two vertical piles 110 or near the vertical piles 110 to increase the support capacity of the weak area.

In the present disclosure, the size of the reinforced blocking part 140 is larger than that of the vertical pile 110. This includes: when the reinforced blocking part 140 and the vertical pile 110 are both cylindrical, the diameter of the reinforced blocking part 140 is larger than the diameter of the vertical pile 110. The diameter of the vertical pile 110, otherwise, the cross-sectional area of the reinforced blocking part 140 is greater than the cross-sectional area of the vertical pile 110, more preferably, the load capacity of the reinforced blocking part 140 is greater than the vertical pile 110 load capacity.

In order to further improve the support stability of the vertical piles 110, in the present disclosure, the foundation pit support structure 100 laterally supported outside the pit may also include a lateral force applying device 150. One end of the lateral force applying device 150 Fixed to the vertical pile 110 and/or the connecting part, at least part of the lateral force applying device 150 is located in the soil around the foundation pit, so that the lateral force applying device 150 can apply force to the vertical pile 110 and/or the connecting portion exerts a fourth force, which is used to at least partially offset the force exerted on the vertical pile 110 by the soil surrounding the foundation pit 110 borne by the vertical pile 110 , that is to say, the fourth force exerts on the vertical pile 110 . The four acting forces can be decomposed into forces in opposite directions to the force exerted by the soil (earthwork) around the foundation pit on the vertical pile 110 .

As a specific implementation form, the lateral force applying device 150 includes structures such as cable-stayed anchors, steel pipes, and soil nails. That is to say, the lateral force-applying device 150 can selectively use cable-stayed anchors, steel pipes, and soil nails. At least one of steel pipes and soil nails.

Considering that the foundation pit may form two parallel or approximately 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 is located inside the foundation pit and is used to apply a fifth force to the connection part and/or the vertical pile 110. The fifth force is used to at least partially offset the foundation load borne by the vertical pile 110. The force exerted by the soil around the pit on the vertical pile 110 , that is to say, the fifth force can be decomposed into a force in the opposite direction to the force exerted by the soil (earth) around the pit on the vertical pile 110 .

More preferably, the foundation pit support structure 100 that is laterally supported outside the pit also includes: an angular support structure 170, which is disposed in the corner area of the foundation pit so as to pass through the angular support structure. 170 applies a sixth force to the upper half and/or connecting portion of at least one vertical pile 110 disposed in the corner area of the foundation pit; and/or, the corner support structure 170 is disposed in the foundation pit The inner support structure 160 is used to apply a sixth force to the upper half and/or the connecting portion of the vertical pile 110 provided at the edge of the foundation pit, wherein the sixth force is used to at least partially The force exerted by the soil around the foundation pit on the vertical pile 110 is offset.

On the one hand, when the corner support structure 170 is provided in the corner area of the foundation pit, the two connecting parts provided in the corner area are formed to have a certain angle. At this time, one end of the corner support structure is provided At one of the two connecting parts, the angular support structure 170 may be arranged in a horizontal shape, or may be arranged in an inclined shape at a certain angle with the horizontal plane. Structurally speaking, the corner support structure 170 can be at least one of a single-layer truss structure, a multi-layer truss structure, a steel pipe structure, a reinforced concrete support structure, a diagonal bracing structure, and a steel pipe diagonal bracing.

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 connecting portion to pass through the inner support structure 160. The angular support structure 170 enables the inner support structure 160 to be stably supported on the connection portion. Similarly, the angle support structure 170 can be arranged in a horizontal shape or in an inclined shape at a certain angle with the horizontal plane. Structurally speaking, the corner support structure 170 can be at least one of a single-layer truss structure, a multi-layer truss structure, a steel pipe structure, a reinforced concrete support structure, a diagonal bracing structure, and a steel pipe diagonal bracing.

In an optional embodiment, the cross-section of the foundation pit is rectangular, square, curved, polygonal or polygonal, or at least a part of the foundation pit is open-shaped, or the cross-section of the foundation pit is The edge portion at least includes a straight line segment and/or an arc segment, thereby making the foundation pit of the present disclosure suitable for different plots of land and the foundations of buildings of different shapes.

Preferably, the vertical piles 110 and/or the reinforced blocking portion 140 are selected from the group consisting of reinforced concrete cast-in-place piles, prefabricated piles, pipe piles, steel sheet piles, steel pipe piles, cement-soil piles, cement-soil gravel piles, and prefabricated steel bars. At least one or more of concrete sheet piles, profiled steel cement-soil mixing walls and reinforced concrete walls.

Moreover, the transverse support member is an integral structure or at least partially an assembled structure, or at least partially a structure that can be assembled and/or disassembled for reuse, thereby reducing the amount of construction waste and realizing green and green construction in the field of construction. Energy saving and environmental protection.

In the present disclosure, one end of the connecting member passes through the first transverse support member and is fixed to the first transverse support member, and the other end of the connecting member passes through the second transverse support member and is fixed to the first transverse support member. At the second transverse support member; one end of the suspension cable passes through the first transverse support member and is fixed to the first transverse support member, and the other end of the suspension cable passes through the third transverse support member. support member, and is fixed to the third transverse support member.

In the present disclosure, the transverse suspension structure is a steel structure or a reinforced concrete structure. More preferably, the upper part of the transverse suspension cable structure is covered with soil, and/or the transverse suspension cable structure is provided with a counterweight, and/or the transverse suspension cable structure is anchored in the earth to prevent the transverse cable-stayed structure from collapsing Out-of-plane instability failure.

Those skilled in the art should know that the "lateral" used in this disclosure, such as "lateral support", etc., does not mean that the structure must be located in a certain horizontal plane. For those skilled in the art, the plane where the structure is located can be It can be at a certain angle to the horizontal plane and not perpendicular to the horizontal plane.

In the description of this specification, reference to the description of the terms "one embodiment/way", "some embodiments/way", "example", "specific example", or "some examples" etc. is meant to be in conjunction with the description of the embodiment/way. or examples describe specific features, structures, materials, or characteristics that are included in at least one embodiment/mode or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment/mode or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, those skilled in the art may combine and combine the different embodiments/ways or examples and the features of different embodiments/ways or examples described in this specification unless they are inconsistent with each other.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

Those skilled in the art should understand that the above-mentioned embodiments are only for clearly illustrating the present disclosure, but are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims (21)

1. A foundation pit support structure with horizontal support outside the pit, which is characterized by including: A vertical blocking part, the vertical blocking part is provided on at least a part of the periphery of the foundation pit; a connecting portion, the connecting portion is provided on the vertical blocking portion to connect at least part of the vertical blocking portion of the vertical blocking portion through the connecting portion; and A transverse suspension cable structure is provided in at least a partial area of at least one side of the foundation pit. 2. The foundation pit support structure with lateral support outside the pit according to claim 1, characterized in that the lateral suspension cable structure includes a lateral support member, and the lateral support member at least includes a first lateral support member and a third lateral support member. A lateral support member, the first lateral support member and the third lateral support member are both connected to the connecting portion to support the first lateral support member and the third lateral support member through the connecting portion. 3. The foundation pit supporting structure with horizontal support outside the pit according to claim 2, wherein the horizontal suspension cable structure includes a suspension cable, and the suspension cable is arranged on the first horizontal support member and the third horizontal support member. Lateral supports. 4. The foundation pit support structure with horizontal support outside the pit according to claim 3, characterized in that the transverse suspension cable structure includes a force applying member, and one end of the force applying member is arranged on the suspension cable. The other end of the force-applying member is disposed on the connecting portion, so that the force-applying member applies a pulling force and/or a pushing force to the connecting portion, and the pulling force and/or pushing force exerted by the force-applying member is at least partially offset. The vertical blocking part bears the force exerted by the soil around the foundation pit on the vertical blocking part. 5. The foundation pit supporting structure with lateral support outside the pit according to claim 4, wherein the connecting part at least includes a first connecting part, and the first lateral support member and the third lateral support member are both provided on the first connecting part, and the first force exerted by the first transverse support member on the first connecting part has a force perpendicular to the extension direction of the first connecting part; the third The first force exerted by the transverse support member toward the first connecting portion has a force perpendicular to the extension direction of the first connecting portion. 6. The foundation pit supporting structure laterally supported outside the pit according to claim 4, characterized in that the connecting part at least includes a first connecting part, a second connecting part and a third connecting part, wherein the third connecting part The second connecting part and the third connecting part are both connected to the first connecting part, so that the second connecting part and the first connecting part have a preset angle, and the third connecting part and the first connecting part have a preset angle. The angle between them has a preset angle. 7. The foundation pit support structure with lateral support outside the pit according to claim 6, wherein the first lateral support member is disposed at the second connecting portion such that the first lateral support member faces the The first force exerted by the second connecting portion has a force parallel to the extension direction of the second connecting portion, and the reaction force of the first force forms at least part of the supporting force of the second connecting portion on the first transverse support. ; The third transverse support member is disposed on the third connection part, and the third force applied by the third transverse support member to the third connection part is parallel to the extension direction of the third connection part. The reaction force of the third acting force forms at least part of the supporting force of the third connecting portion on the third transverse support member. 8. The foundation pit support structure with lateral support outside the pit according to claim 7, wherein the lateral support member further includes: a second lateral support member, and the second lateral support member is connected to the third lateral support member. A connecting part, and enables the second force exerted by the second lateral support member to the first connecting part to be transmitted along the length direction of the first connecting part; the first lateral support member and the second lateral support The pieces are connected through connectors. 9. The foundation pit support structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that at the middle part of the edge of the foundation pit and/or at the corner of the foundation pit Increase the size of the vertical blocking parts or increase the density or number of the vertical blocking parts at the bottom area, and/or, in the middle part of the edge of the foundation pit and/or at the center of the foundation pit. The cross-sectional area of the connection portion provided at the corner region increases. 10. The foundation pit support structure with horizontal support outside the pit according to any one of claims 1 to 8, characterized in that it also includes: Strengthen the blocking part, the size of the strengthening blocking part is greater than or equal to the vertical blocking part, or increase the number of the strengthening blocking parts; and/or, the strengthening blocking part is located in the middle part of the edge of the foundation pit and/or Or located in the corner area of the foundation pit. 11. The foundation pit supporting structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that it also includes: A transverse force applying device, one end of the transverse force applying device is fixed to the vertical blocking part and/or the connecting part, and at least part of the transverse force applying device is located in the soil around the foundation pit so as to pass through the The lateral force applying device applies a fourth force to the vertical blocking part and/or the connecting part. The fourth force is used to at least partially offset the soil around the foundation pit that the vertical blocking part bears to the vertical blocking part. The force exerted. 12. The foundation pit support structure with horizontal support outside the pit according to any one of claims 1 to 8, characterized in that it also includes: Internal support structure, the internal support structure is located inside the foundation pit and is used to apply a fifth force to the connecting part and/or the vertical barrier part, the fifth force is used to at least partially offset the The vertical blocking part bears the force exerted by the soil around the foundation pit on the vertical blocking part. 13. The foundation pit support structure laterally supported outside the pit according to claim 12, wherein the inner support structure is used to apply the fifth force to the middle part of the edge of the foundation pit. 14. The foundation pit supporting structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that it also includes: A corner support structure, the corner support structure is provided in the corner area of the foundation pit, so that the upper half of the vertical blocking portion and the /or the connecting portion exerts a sixth force; and/or the angle support structure is provided on the inner support structure and is used to provide support to the upper half of the vertical blocking portion provided on the edge of the foundation pit and/or The connecting portion exerts a sixth force, wherein the sixth force is used to at least partially offset the force exerted by the soil surrounding the foundation pit on the vertical blocking portion that the vertical blocking portion bears. 15. The foundation pit supporting structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that the connecting part includes a crown beam and/or a waist beam, wherein the crown beam is arranged on the The top of the vertical blocking part, and/or the waist beam is disposed between the two ends of the vertical blocking part. 16. The foundation pit support structure with horizontal support outside the pit according to claim 15, characterized in that the crown beam and/or waist beam are supported on the bottom of the foundation pit through internal diagonal braces. 17. The foundation pit supporting structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that the cross section of the foundation pit is rectangular, square, curved, polygonal or polygonal, or the At least a part of the foundation pit is open-shaped, or the edge of the cross-section of the foundation pit at least includes a straight line segment and/or an arc segment. 18. The foundation pit supporting structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that the vertical blocking part and/or the reinforced blocking part are selected from the group consisting of reinforced concrete cast-in-place piles, prefabricated piles, At least one or more of prefabricated reinforced concrete sheet piles, pipe piles, steel sheet piles, steel pipe piles, cement soil piles, cement soil gravel piles, steel cement soil mixing walls and reinforced concrete walls. 19. The foundation pit support structure with lateral support outside the pit according to any one of claims 1 to 8, characterized in that the lateral support member is an integral structure or at least partially an assembled structure, or at least partially assemblable. And/or it is a detachable and reusable structure; and/or the transverse support is arranged outside the foundation pit; and/or the transverse suspension structure is a steel structure or a reinforced concrete structure. 20. The foundation pit support structure with horizontal support outside the pit according to claim 3, characterized in that the force-applying member is one or more of a cable, a tie rod, a steel cable, a steel rod or a steel structure. 21. The foundation pit supporting structure laterally supported outside the pit according to any one of claims 1 to 8, characterized in that the upper part of the transverse suspension cable structure is covered with soil, and/or the transverse suspension cable structure is provided with The counterweight, and/or, the transverse suspension structure is anchored in the earth to prevent out-of-plane instability damage of the transverse suspension structure.