CN218027709U

CN218027709U - Foundation pit supporting structure

Info

Publication number: CN218027709U
Application number: CN202221398777.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Asahi Co Ltd
Current assignee: Asahi Co Ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-12-13
Anticipated expiration: 2032-06-06

Abstract

The present disclosure provides a foundation pit supporting structure, a vertical barrier part; the connecting part at least comprises a first connecting part; a lateral support member including at least a middle lateral support member, the middle lateral support member being disposed at a portion between both ends of the first connection portion, and the middle lateral support member applying a first positive pressure to the first connection portion; an inner support structure connected to the first connection portion and through which a first positive pressure can be transmitted; and one end of the middle force application component is arranged on the middle transverse supporting piece, and the other end of the middle force application component is arranged on the first connecting part, so that pulling force is applied to the first connecting part and/or the vertical blocking part through the middle force application component, and the pulling force applied to the middle force application component at least partially offsets the force applied to the vertical blocking part by the soil around the foundation pit born by the vertical blocking part.

Description

Foundation pit supporting structure

Technical Field

The utility model relates to a foundation ditch supporting construction belongs to building technical field.

Background

In building construction or underground structure construction, a foundation pit is generally formed by performing open cut work on the ground. Often set up vertical pile through the periphery at the foundation ditch among the prior art, set up the foundation ditch supporting construction of horizontal support in the hole and prevent that the peripheral soil of foundation ditch from taking place to collapse.

Structurally, the foundation pit support of the current building mostly adopts a vertical support pile and an in-pit horizontal support or an oblique-pulling anchor rod to resist the thrust of soil outside the pit, the in-pit horizontal support has a hindrance effect on construction, the cost is very high, and the horizontal support needs to be removed after the basement construction is finished. And when the horizontal support is used for construction, the consumption of manpower and material resources is remarkable, and the construction period is long.

And though drawing the stock to one side also provides the structure of counteracting soil thrust, nevertheless the soil property often is not ideal, will stretch into moreover outside the building foundation ditch very far just can obtain limited resistance, stretch too far and also not allow, too short unreliable causes the collapse of whole soil body very easily, often the foundation ditch accident that collapses in reality, causes the road to collapse or personnel's injury.

The two prior arts have large investment once, and after the basement is finished, the mission is finished, the basement can not be reused, and the waste is very large.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the technical problems, the present disclosure provides a foundation pit supporting structure.

According to an aspect of the present disclosure, there is provided an excavation supporting structure, including:

the vertical blocking part is arranged on at least one part of the periphery of the foundation pit;

a connecting part provided to the vertical barrier part to connect at least a part of the vertical barrier part through the connecting part; wherein the connecting part at least comprises a first connecting part;

lateral supports including at least a middle lateral support connected to a portion between both ends of the first connection part, and applying a first positive pressure to the first connection part and/or the vertical blocking part;

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

the middle force application component is arranged at one end of the middle force application component, the other end of the middle force application component is arranged at the first connecting part, so that pulling force is applied to the first connecting part and/or the vertical blocking part through the middle force application component, and the pulling force applied to the vertical blocking part by the peripheral soil of the foundation pit born by the vertical blocking part is at least partially offset through the pulling force applied by the middle force application component.

According to the foundation pit supporting structure of at least one embodiment of this disclosure, the middle force application component is located on at least one side of the middle transverse support.

According to this foundation ditch supporting construction of at least one embodiment of this disclosure, connecting portion still include the second connecting portion, have the contained angle of a default angle between first connecting portion and the second connecting portion.

According to the foundation pit supporting structure of at least one embodiment of the present disclosure, the transverse supporting member includes at least a first transverse supporting member connected to the first connecting portion and/or the second connecting portion; and

the first force application component is arranged at one end of the first force application component, the other end of the first force application component is connected to the first connecting portion, so that first pulling force is applied to the first connecting portion and/or the vertical blocking portion through the first force application component, and the force applied to the vertical blocking portion by the soil around the foundation pit born by the vertical blocking portion is at least partially offset through the first pulling force applied by the first force application component.

According to the excavation supporting construction of at least one embodiment of this disclosure, horizontal support piece still includes: a second lateral support connected to the first and/or second connection portion;

the second transverse supporting piece is provided with one end of a second force application component, and the other end of the second force application component is arranged on the second connecting portion, so that second pulling force is applied to the second connecting portion and/or the vertical blocking portion through the second force application component, and the force applied to the vertical blocking portion by the soil around the foundation pit born by the vertical blocking portion is at least partially offset through the second pulling force applied by the second force application component.

According to the foundation pit supporting structure of at least one embodiment of this disclosure, connect through the connecting piece between first transverse support piece and the second transverse support piece.

According to the foundation pit supporting structure of at least one embodiment of this disclosure, the connecting portion further includes a third connecting portion; the third connecting portion is connected with the first connecting portion, and an included angle of a preset angle is formed between the third connecting portion and the first connecting portion.

According to the excavation supporting construction of at least one embodiment of this disclosure, horizontal support piece still includes: the third transverse supporting part is connected to the third connecting part, and enables a third acting force applied to the third connecting part by the third transverse supporting part to be transmitted along the length direction of the third connecting part; the reaction force of the third acting force forms at least part of the supporting force of the third connecting part to the third transverse supporting part;

the third transverse supporting piece is provided with one end of a third force application component, and the other end of the third force application component is arranged on the first connecting portion, so that third pulling force is applied to the first connecting portion through the third force application component, and the force applied to the vertical blocking portion by the soil around the foundation pit and borne by the vertical blocking portion is at least partially offset through the third pulling force applied by the third force application component.

According to the foundation pit supporting structure of at least one embodiment of the present disclosure, the size of the vertical stoppers provided or the density or number of the vertical stoppers provided is increased at the middle portion of the side of the foundation pit and/or the corner region of the foundation pit, and/or the area of the cross section of the connection part provided at the middle portion of the side of the foundation pit and/or the corner region of the foundation pit is increased.

According to this foundation ditch supporting construction of at least one embodiment of this disclosure, still include:

the size of the reinforced blocking part is larger than or equal to that of the vertical blocking part, or the number of the reinforced blocking parts is increased; and/or the reinforcing barrier is positioned at the middle part of the edge part of the foundation pit and/or positioned in the corner area of the foundation pit.

According to this at least one embodiment of this disclosure's excavation supporting construction, still include:

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

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

According to the foundation pit supporting structure of at least one embodiment of the present disclosure, the connecting portion includes a crown beam and/or a wale, wherein the crown beam is disposed on a top of the vertical barrier portion, and/or the wale is disposed at a portion between both ends of the vertical barrier portion.

According to the foundation pit supporting structure of at least one embodiment of the present disclosure, the crown beam and/or the wale are supported at the bottom of the foundation pit by the inner diagonal brace.

According to the foundation pit supporting structure of at least one embodiment of the present disclosure, the cross section of the foundation pit is rectangular, square, curved, dog-leg-shaped or polygonal, or at least a part of the foundation pit is in an open shape, or the edge of the cross section of the foundation pit at least comprises a straight line segment and/or an arc line segment.

According to the foundation pit supporting structure of at least one embodiment of this disclosure, the vertical barrier and/or the enhancement barrier are selected from reinforced concrete bored concrete pile, precast pile, prefabricated reinforced concrete sheet pile, tubular pile, steel sheet pile, steel-pipe pile, cement soil gravel pile, shaped steel cement soil mixing wall and reinforced concrete wall at least one or more.

According to the foundation pit supporting structure of at least one embodiment of the present disclosure, the transverse supporting member is of an integral structure or at least partially of an assembled structure, or at least partially of an assembled and/or detachable reusable structure; and/or the transverse supporting piece is arranged on the outer side of the foundation pit; and/or the transverse support is of a steel structure or a reinforced concrete structure.

According to the foundation pit supporting structure of at least one embodiment of this disclosure, the middle part application of force part is cable, pull rod, cable wire, steel pole or one or more of steel construction.

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

In accordance with at least one embodiment of the present disclosure, the inner support includes a horizontal support structure, a diagonal brace, an anchor rod, or a gathering vertical pile.

Drawings

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

Fig. 1 to 4 are schematic sectional structural views of an excavation supporting structure according to various embodiments of the present disclosure.

Fig. 5-7 are schematic structural views of an excavation supporting structure according to various embodiments of the present disclosure.

Fig. 8 to 10 are schematic structural views of an excavation supporting structure according to various embodiments of the present disclosure.

Fig. 11 and 12 are schematic structural views of an excavation supporting structure according to various embodiments of the present disclosure.

Fig. 13 and 14 are schematic structural views of an excavation supporting structure according to various embodiments of the present disclosure.

Fig. 15 is a schematic structural view of an excavation supporting structure according to an embodiment of the present disclosure.

Fig. 16 to 22 are schematic sectional structural views of an excavation supporting structure according to another embodiment of the present disclosure.

The reference numbers in the figures are in particular:

100 foundation pit supporting structure

110 vertical pile

120 connecting part

121 first connection part

122 second connecting part

123 third connecting part

130 transverse support

131 first transverse support

132 second lateral support

133 third transverse support

134 first force application member

135 second force-applying part

136 third force-applying member

137 connecting piece

140 reinforced barrier

150 transverse force application device

160 internal support structure

170 corner supporting structure

180 waist rail

190 inner inclined strut

201 middle transverse support

202 middle force application part

203 corner transverse support

204 corner forcing members.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples 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. Accordingly, unless otherwise indicated, features of the various 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 the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality among the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "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 purposes of this disclosure, the term "connected" may refer to physically connected, electrically connected, and the like, with or without intervening components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "under 8230; \8230;,"' under 8230; \8230; below 8230; under 8230; above, on, above 8230; higher "and" side (e.g., as in "side wall)", etc., to describe the relationship of one component to another (other) component as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. 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 "at 8230 \8230;" below "may encompass both an orientation of" above "and" below ". Further, the devices 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 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 this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

As shown in fig. 1 to 4, an excavation supporting structure 100 of the present disclosure includes: vertical stop, connecting portion 120, and lateral support.

In the present disclosure, the vertical barrier may be a vertical pile 110, and the vertical pile 110 is disposed at least a portion of the periphery of the foundation pit; so that the earthwork around the foundation pit is blocked by the vertical piles 110 to prevent the collapse of the earthwork. In another embodiment, the vertical blocking part can also be a vertical continuous wall or the like.

When the foundation pit supporting structure is actually used, on one hand, at least part of the vertical piles 110 are installed before a foundation pit is excavated; on the other hand, when the foundation pit is constructed or after the construction is finished, the vertical piles 110 are arranged around the foundation pit.

The vertical piles 110 can be cylindrical piles or steel sheet piles; when the vertical pile 110 is a cylindrical pile, the cylindrical pile may be a precast pile or a cast-in-place pile, the precast pile may also be a reinforced concrete precast pile or a steel pile, and is preferably a steel pile, so that the foundation pit supporting structure 100 is conveniently installed, and the vertical pile 110 can be repeatedly used.

The steel sheet pile is the steel construction prefab, when keeping soil through the steel sheet pile, the length direction of steel sheet pile is the direction of height after the installation promptly, 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 adjacent to each other to prevent earthwork from entering a foundation pit through a gap between the vertical piles 110, causing safety problems such as personal injury.

Of course, there may be a certain gap between two adjacent vertical piles 110, and preferably, when the gap between two adjacent vertical piles 110 is large, a structure for retaining soil needs to be provided between two vertical piles 110 having the gap, or the earth is solidified to form a pile-wall soil retaining structure, so as to prevent the collapse of the earth.

In the present disclosure, the vertical piles 110 provided in some weak areas or areas having a relatively large force are increased in size or increased in density or number.

The weak region of the foundation pit may be a middle portion of an edge of the foundation pit or a corner region of the foundation pit. For example, when the length of the side of the foundation pit is greater than a predetermined value, it may be considered that the middle portion of the side of the foundation pit belongs to the weak region. On the other hand, the corner regions of the foundation pit are usually stressed more and complicated and all belong to weak regions of the foundation pit.

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

On the other hand, the increasing of the density of the vertical piles 110 may include: the interval between the vertical piles 110 outside the weak region is smaller than that between the vertical piles 110 outside the weak region, or when the vertical piles 110 outside the weak region are disposed in close proximity to each other, the vertical piles 110 inside the weak region may be disposed in multiple columns or multiple rows, and the number of vertical piles 110 per unit area inside the weak region is larger than that of the vertical piles 110 per unit area outside the weak region.

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

The connecting portion is disposed on the vertical pile 110, so as to connect at least a part of the vertical pile 110 through the connecting portion. In the present disclosure, the connection part 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 crown beam and/or wale 180 may be supported at the pit bottom of the foundation pit by means of an inner brace 190.

In the present disclosure, the connecting portion may be provided in plurality, and each connecting portion connects at least a portion of the vertical piles 110 among the vertical piles 110, and the connecting portions may be connected to each other such that the connecting portion is 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 arranged.

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

As defined above, in the present disclosure, the cross-sectional area of the connection portion provided at some weak region of the foundation pit is increased, that is, a vertical plane or a substantially vertical plane perpendicular to the direction in which the connection portion extends. Therefore, the load limit of the connecting part near the weak area can be improved, and the stability of the foundation pit supporting structure is improved.

Similar to the above, the weak area of the foundation pit may be a middle portion of an edge of the foundation pit or a corner area of the foundation pit. For example, when the length of the side of the foundation pit is greater than a predetermined value, it may be considered that the middle portion of the side of the foundation pit belongs to the weak region. On the other hand, the corner area of the foundation pit is usually stressed more and complicated, and all belong to the weak area of the foundation pit.

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

In addition, as shown in fig. 16, the vertical piles 110 may be steel piles, and the upper portions of the lateral supports may be covered with soil, which may make the lateral supports resist out-of-plane buckling, or 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 supporting piece is connected with the crown beam.

In another embodiment, as shown in fig. 17, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil to resist out-of-plane buckling of the transverse support, although the upper side of the transverse support may be free of soil. The connecting parts are formed into two crown beams, the top of the steel pile is clamped by the two crown beams, and the connecting parts can be realized by adopting structures such as I-steel, channel steel, reinforced concrete or steel pipes. The transverse strut is connected with the crown beam.

In another embodiment, as shown in fig. 18, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil to resist out-of-plane buckling of the transverse support, although the upper side of the transverse support may be free of soil. The connecting part is formed into a crown beam, the crown beam is an integral crown beam, and the transverse supporting piece is connected with the crown beam. More preferably, the connection part may be implemented by using an i-beam, a channel, reinforced concrete, or a steel pipe.

In another embodiment, as shown in fig. 19, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil to resist out-of-plane buckling of the transverse support, although the upper side of the transverse support may be free of soil. The connecting portion include hat roof beam and waist rail, hat roof beam is connected with horizontal force application device (stock), the waist rail also is connected with horizontal force application device (stock), horizontal support piece is connected with hat roof beam. More preferably, the connection part may be implemented by using an i-beam, a channel, reinforced concrete, or a steel pipe.

In another embodiment, as shown in fig. 20, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil to resist out-of-plane buckling of the transverse support, although the upper side of the transverse support may be free of soil. The connecting part comprises a crown beam and a waist beam, 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 and the inner supporting structure connected with the waist beam are connected with each other to form a multilayer inner supporting structure. The transverse strut is connected with the crown beam. More preferably, the connection part may be implemented by using an i-beam, a channel, reinforced concrete, or a steel pipe.

In another embodiment, as shown in fig. 21, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil, but the upper side of the transverse support may not be covered with soil. The connecting portion comprise a crown beam and a waist beam, the covering soil can enable the transverse supporting members to resist out-of-plane instability damage, the waist beam is connected with the inner supporting structure, and the transverse supporting members are connected with the crown beam. More preferably, the connection part may be implemented by using an i-beam, a channel, reinforced concrete, or a steel pipe.

In another embodiment, as shown in fig. 22, the vertical piles 110 may be steel piles, and the upper side of the transverse support may be covered with soil to resist out-of-plane buckling of the transverse support, although the upper side of the transverse support may be free of soil. The connecting part comprises two crown beams and two waist beams, the top of the steel pile is clamped by the two crown beams, the waist beams are connected with the inner support structure, and the connecting part can be realized by adopting structures such as I-shaped steel, channel steel, reinforced concrete or steel pipes. The transverse strut is connected with the crown beam.

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

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

The lateral support member includes at least a middle lateral support member 201, the middle lateral support member 201 is disposed at a portion between both ends of the first connection part 121, and the middle lateral support member 201 applies a first positive pressure to the first connection part 121.

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

One end of the middle force application component 202 is disposed on the middle transverse support 201, and the other end of the middle force application component 202 is disposed on the first connection portion 121, so that the middle force application component 202 applies a pulling force to the first connection portion 121, and the pulling force applied by the middle force application component 202 at least partially offsets a force applied by soil around the foundation pit to the vertical pile 110, which is borne by the vertical pile 110.

Preferably, the middle force application part 202 is located on at least one side of the middle transverse support 201, for example, as shown in fig. 5 and 6, the middle force application part 202 is disposed on both sides of the middle transverse support 201, so that the middle transverse support 201 can be stably maintained under the traction of the middle force application parts 202 on both sides.

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

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

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

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

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

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

That is to say, during the construction of the foundation pit, the earthwork around the foundation pit applies an acting force towards the inside of the foundation pit to the vertical piles 110, and when the acting force is greater than the load limit of the vertical piles 110, the earthwork around the foundation pit will collapse, which causes a major safety liability accident.

In the present disclosure, however, the lateral support provides a force to the vertical pile outside the foundation pit, so that the force applied to the vertical pile 110 by the soil (earthwork) around the foundation pit can be at least partially offset, thereby improving the stability of the vertical pile 110. Further, it is considered 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, whereby the acting point of the first tensile force applied to the connecting portion by the lateral support member 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 may also be located at the middle region of the vertical pile 110, and the horizontal supporting member may also be disposed at the middle region of the vertical pile 110, and the like, which are not described herein again.

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

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

The first transverse supporting member 131 and the second transverse supporting member 132 are connected by a connecting member 137, so that the first transverse supporting member 131 and the second transverse supporting member 132 can be balanced more easily, and the first transverse supporting member 131 and/or the second transverse supporting member 132 can be prevented from being damaged by bending and the like. In the present disclosure, the link 137 may be a force applying member. In the present disclosure, the connecting member 137 may be a cable, a rope, a rod, a support rod, a steel structure, a reinforced concrete beam, a reinforced concrete slab, or the like.

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

The third transverse supporting member 133 is provided with one end of a third force application component 136, and the other end of the third force application component 136 is provided with the first connecting portion 121, so that a third pulling force is applied to the first connecting portion 121 through the third force application component 136, and the third pulling force applied by the third force application component 136 at least partially offsets the force applied to the vertical pile 110 by the soil around the foundation pit and borne by the vertical pile 110.

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

One end of the corner force application component 204 is disposed on the corner transverse support 203, and the other end of the corner force application component 204 is disposed on the first connecting portion 121 and/or the second connecting portion 122, so that a pulling force is applied to the first connecting portion 121 and/or the second connecting portion 122 through the corner force application component 204, and the pulling force applied by the corner force application component 204 at least partially offsets a force applied to the vertical pile 110 by soil around the foundation pit and borne by the vertical pile 110.

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

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

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

Preferably, the excavation 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 barrier 140 may be formed as a wall or the like.

Strengthen barrier 140 size more than or equal to vertical pile 110, or increase strengthen the quantity of barrier, and/or, strengthen barrier 140 and be located the mid portion of the limit portion of foundation ditch and/or be located the bight region of foundation ditch to this can improve the weak regional support ability of foundation ditch for foundation ditch supporting construction has higher stability, or builds a reinforcing area specially, in order to replace horizontal brace or bearing diagonal.

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

In the present disclosure, the reinforcing barrier 140 having a size larger than that of the vertical pile 110 includes: when the reinforced barrier 140 and the vertical pile 110 are both cylindrical, the diameter of the reinforced barrier 140 is larger than that of the vertical pile 110, otherwise, the cross-sectional area of the reinforced barrier 140 is larger than that of the vertical pile 110, and more preferably, the load capacity of the reinforced barrier 140 is larger than that of the vertical pile 110.

In order to further improve the supporting stability of the vertical pile 110, in the present disclosure, the foundation pit supporting structure 100 may further include a lateral force application device 150, one end of the lateral force application device 150 is fixed to the vertical pile 110 and/or the connecting portion, at least a part of the lateral force application device 150 is located in the soil around the foundation pit, so as to apply a fourth acting force to the vertical pile 110 and/or the connecting portion through the lateral force application device 150, where the fourth acting force is used to at least partially offset the force applied to the vertical pile 110 by the soil around the foundation pit and borne by the vertical pile 110, that is, the fourth acting force can be resolved into a force opposite to the direction of the force applied to the vertical pile 110 by the soil (earth direction) around the foundation pit.

In a specific implementation form, the transverse force application device 150 includes a cable-stayed anchor rod, a steel pipe, a soil nail, and the like, that is, the transverse force application device 150 can selectively use at least one of the cable-stayed anchor rod, the steel pipe, and the soil nail.

Considering that the foundation pit may form two parallel or substantially parallel sides, for example, when the foundation pit is a rectangular foundation pit, an inner supporting structure 160 may be disposed at a long side position of the foundation pit, the inner supporting structure 160 may be located inside the foundation pit and may be configured to apply a fifth acting force to the connecting portion and/or the vertical piles 110, the fifth acting force may be configured to at least partially offset a force applied to the vertical piles 110 by soil around the foundation pit, which is borne by the vertical piles 110, that is, the fifth acting force may be resolved into a force opposite to a direction of the force applied to the vertical piles 110 by the soil (earthwork) around the foundation pit.

More preferably, the supporting structure 100 further includes: a corner support structure 170, wherein the corner support structure 170 is disposed at a corner region of the foundation pit, so that a sixth force is applied to an upper half portion and/or a connection portion of at least one vertical pile 110 disposed at the corner region of the foundation pit through the corner support structure 170; and/or the angle brace structure 170 is arranged on the inner support structure 160 of the foundation pit and is used for applying a sixth acting force to the upper half part and/or the connecting part of the vertical pile 110 arranged at the edge part of the foundation pit, wherein the sixth acting force is used for at least partially offsetting the force applied to the vertical pile 110 by the soil around the foundation pit born by the vertical pile 110.

On one hand, when the corner support structure 170 is disposed in the corner region of the foundation pit, two connection portions disposed in the corner region are formed to have a certain angle, in this case, one end of the corner support structure is disposed in one of the two connection portions, and the corner support structure 170 may be disposed in a horizontal shape or an inclined shape forming a certain angle with the horizontal plane. Structurally, the corner 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 provided to the inner support structure 160, one end of the corner support structure 170 is provided to the inner support structure 160, and the other end is provided to the connection portion, so that the inner support structure 160 is stably supported to the connection portion by the corner support structure 170. Similarly, the angle support structure 170 may be disposed horizontally or inclined at an angle to the horizontal. Structurally, the corner support structure 170 may 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, dog-leg or polygonal, or at least a part of the foundation pit is open, or the edge of the cross section of the foundation pit at least comprises a straight line segment and/or an arc line segment, so that the foundation pit disclosed by the invention can be suitable for different land parcels and foundations of buildings with different shapes.

Preferably, the vertical piles 110 and/or the reinforcement barrier 140 are selected from at least one or more of a reinforced concrete cast-in-place pile, a precast pile, a pipe pile, a steel pipe pile, a cement-soil gravel pile, a precast reinforced concrete sheet pile, a profiled steel-cement-soil mixed wall, and a reinforced concrete wall.

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

Moreover, the transverse supporting piece is of an integral structure or at least partially of an assembly structure, or at least partially of a structure which can be assembled and/or disassembled for repeated use, so that the quantity of construction waste is reduced, and the green, energy-saving and environment-friendly effects in the field of construction are realized.

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

It will be understood by those skilled in the art that the use of "lateral" as used in this disclosure, such as "lateral support" does not mean that the structure must be located in a horizontal plane, and it will be apparent to those skilled in the art that the plane of the structure may be at an angle to the horizontal and may not be perpendicular to the horizontal.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode 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/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

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

It will be understood by those skilled in the art that the foregoing 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 may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A foundation pit supporting structure, which is characterized by comprising:

a lateral support member including at least a middle lateral support member connected to a portion between both ends of the first connection portion, and applying a first positive pressure to the first connection portion and/or the vertical blocking portion;

2. An excavation supporting construction as claimed in claim 1, wherein the central force applying member is located on at least one side of the central transverse support.

3. The foundation pit supporting structure of claim 1, wherein the connecting portion further comprises a second connecting portion, and an included angle of a predetermined angle is formed between the first connecting portion and the second connecting portion.

4. A foundation pit supporting structure according to claim 3, wherein the transverse support member comprises at least a first transverse support member connected to the first and/or second connection portion; and

5. The excavation supporting structure of claim 4, wherein the transverse support member further comprises: a second lateral support connected to the first and/or second connection portion;

6. An excavation supporting construction as claimed in claim 5, wherein the first and second transverse bracing members are connected by a connector.

7. The foundation pit supporting structure of claim 4, wherein the connecting portion further comprises a third connecting portion; the third connecting portion with first connecting portion are connected to an contained angle that has the angle of predetermineeing between third connecting portion and the first connecting portion.

8. The excavation supporting structure of claim 7, wherein the transverse support member further comprises: the third transverse supporting piece is connected to the third connecting part, and enables a third acting force applied to the third connecting part by the third transverse supporting piece to be transmitted along the length direction of the third connecting part; the reaction force of the third acting force forms at least part of the supporting force of the third connecting part to the third transverse supporting part;

9. A foundation pit supporting construction according to any one of claims 1-8, wherein the size of the vertical stoppers provided or the density or number of the vertical stoppers provided is increased at the middle part of the side of the foundation pit and/or the corner region of the foundation pit, and/or the cross-sectional area of the connecting part provided at the middle part of the side of the foundation pit and/or the corner region of the foundation pit is increased.

10. A foundation pit supporting construction according to any one of claims 1 to 8, further comprising:

11. An excavation supporting construction as claimed in any one of claims 1 to 8, further comprising:

12. A foundation pit supporting construction according to any one of claims 1 to 8, further comprising:

13. A foundation pit supporting construction according to any one of claims 1-8, wherein the connecting portion comprises a crown beam and/or a wale, wherein the crown beam is provided on top of the vertical barrier portion, and/or the wale is provided at a portion between both ends of the vertical barrier portion.

14. A foundation pit supporting construction according to claim 13, wherein the crown beam and/or wale is supported to the bottom of the foundation pit by means of an inner bracing.

15. A foundation pit supporting structure according to any one of claims 1 to 8, wherein the cross-section of the foundation pit is rectangular, square, curved, dog-leg or polygonal, or at least a portion of the foundation pit is open, or the sides of the cross-section of the foundation pit include at least straight and/or curved segments.

16. A foundation pit supporting construction according to any one of claims 1-8, wherein the vertical barrier and/or the reinforced barrier are selected from at least one or more of a reinforced concrete cast-in-place pile, a precast reinforced concrete sheet pile, a pipe pile, a steel sheet pile, a steel pipe pile, a cement-soil gravel pile, a steel reinforced concrete mixing wall, and a reinforced concrete wall.

17. An excavation supporting construction as claimed in any one of claims 1 to 8, wherein the transverse support members are of unitary construction or are at least partially fabricated and/or are of a construction which is removable and/or reusable; and/or the transverse supporting piece is arranged on the outer side of the foundation pit; and/or the transverse support is a steel structure or a reinforced concrete structure.

18. A foundation pit supporting structure according to any one of claims 1 to 8, wherein the central force applying member is one or more of a cable, a tie rod, a wire rope, a steel rod or a steel structure.

19. An excavation supporting construction as claimed in any one of claims 1 to 8, wherein an upper portion of the transverse support is earth-covered and/or the transverse support is provided with a counterweight and/or the transverse support is anchored to the earth to prevent out-of-plane buckling of the transverse support.

20. A foundation pit supporting structure as claimed in any one of claims 1 to 8, wherein the inner support comprises a horizontal support structure, a diagonal brace, an anchor rod or a pile.