CN218437094U - Foundation pit supporting structure - Google Patents

Abstract

The utility model belongs to the technical field of the construction, a supporting construction for foundation ditch is disclosed. The foundation pit supporting structure comprises an enclosure structure and a supporting structure. The enclosure structure is circumferentially arranged on the side wall of the foundation pit; the supporting structure comprises a waist beam, the waist beam is circumferentially and annularly arranged on the enclosure structure along the circumferential direction, a first sleeve and a second sleeve are vertically arranged on the waist beam in a penetrating mode, the first sleeve is located at the joint of the waist beam and the enclosure structure and used for penetrating through a cable or a rope saw, and the second sleeve and the first sleeve are arranged at intervals along the extending direction of the waist beam and used for penetrating through a pump pipe or a hoisting rope. The waist rail in the foundation pit supporting structure can penetrate through the cable and the pump pipe, so that the wiring of a construction site is neat, the construction difficulty is reduced, and the construction cost is saved. Meanwhile, in the subsequent dismantling construction process, the waist rail can also penetrate through the rope saw and the hoisting rope, so that the waist rail is hoisted out of the foundation pit in a segmented manner through cutting, the process of dismantling the waist rail is simplified, time and labor are saved, and the environment is protected.

Description

Foundation pit supporting structure

Technical Field

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

Background

In order to ensure the safety of the construction of the underground main body structure and the surrounding environment of the foundation pit, a supporting structure is required to be arranged to temporarily support, reinforce and protect the side wall and the surrounding environment of the foundation pit, and the supporting structure is dismantled after the construction is finished. The reinforced concrete supports are widely applied to deep foundation pit engineering due to the advantages of large rigidity, good integrity, flexible arrangement and the like, the reinforced concrete supports are arranged on an underground continuous wall, and the reinforced concrete supports comprise waist beams and supporting beams, the waist beams in the deep foundation pit have the characteristics of large size, heavy weight and the like, and bring the following difficulties for construction:

in order to avoid that the supporting shaft force of the foundation pit supporting structure exceeds the design strength, the supporting shaft force needs to be monitored, however, due to the existence of the waist beam, the monitoring cable cannot directly extend to the ground along the supporting structure, but needs to bypass the waist beam to be suspended to the ground, the suspended monitoring cable enables the construction environment in the foundation pit to become complex, the subsequent construction difficulty is increased, and meanwhile, the risk that the monitoring cable is damaged is increased. In the construction process of a part of deep foundation pit structures, a concrete pump is required to be used for structural pouring, a pump pipe of the concrete pump is required to be provided with a support for supporting and fixing, and due to the existence of the waist beam, the pump pipe cannot directly enter a pouring area along a supporting structure, and the support of the pump pipe can be only erected by bypassing the waist beam, so that the expenditure of labor and materials is increased, and the construction cost is increased. After construction is finished, the waist beam needs to be removed, the conventional waist beam removing method mostly adopts an air compressor to chisel, impact, noise, dust and the like are easily generated in the mode, the surrounding environment is influenced, and concrete slag after being removed also needs to be cleared out of a deep foundation pit, so that time and labor are wasted.

Therefore, a need exists for an excavation supporting structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a foundation ditch supporting structure can reduce the construction degree of difficulty, saves construction cost, and the waist rail later stage among this foundation ditch supporting structure demolishs convenience, labour saving and time saving.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a foundation ditch supporting construction, include:

the enclosure structure is circumferentially and annularly arranged on the side wall of the foundation pit;

bearing structure, including the waist rail, the waist rail is located along the circumference ring envelope is last, first sleeve pipe and second sleeve pipe are worn to be equipped with along vertical on the waist rail, first sleeve pipe is located the waist rail with envelope's junction for wear to establish cable or rope saw, the second sleeve pipe with first sleeve pipe is followed the direction interval that stretches out of waist rail sets up, is used for wearing to establish pump line or hoist and mount rope.

Preferably, the foundation pit supporting structure further comprises a connecting assembly, wherein the connecting assembly is used for connecting the wale and a support of the pump pipe, or the connecting assembly is used for connecting the wale and a guardrail of the wale.

Preferably, the coupling assembling includes pre-buried section of thick bamboo and connecting piece, pre-buried section of thick bamboo inlays to be located on the waist rail, the one end of connecting piece with pre-buried section of thick bamboo can be dismantled and be connected, the other end with the support of pump line or the guardrail of waist rail is connected.

Preferably, a plurality of the embedded cylinders are arranged on the waist rail at intervals in the circumferential direction of the second sleeve, and a plurality of the embedded cylinders are arranged at intervals in the length direction of the waist rail at one end of the waist rail, which is far away from the envelope structure.

Preferably, the connecting assembly further comprises a plugging piece, and the plugging piece is used for plugging the embedded cylinder.

Preferably, the top of second sheathed tube with the top surface of waist rail flushes, excavation supporting construction still includes the guard plate, be provided with the bracing piece on the guard plate, the bracing piece with pre-buried section of thick bamboo can be dismantled and be connected, so that the guard plate can the closing cap the sheathed tube top opening of second.

Preferably, the top end of the first sleeve and the top end of the second sleeve are both arranged on the top surface of the wale in a protruding mode.

Preferably, the first sleeve and the second sleeve are provided in plurality, and the first sleeves and the second sleeves are distributed at intervals along the length direction of the wale.

Preferably, the wale comprises a concrete structure and a stress bar embedded in the concrete structure, and the stress bar is provided with a reinforcing rib along the circumferential direction of the second sleeve at the penetrating position of the second sleeve.

Preferably, the diameter of the second sleeve is larger than the diameter of the first sleeve.

The utility model has the advantages that:

the utility model provides a foundation ditch supporting construction, including envelope and bearing structure, bearing structure includes the waist rail. In the construction process of the deep foundation pit, firstly, a building enclosure is arranged around the foundation pit and is used for bearing the load of the foundation pit. And then, pouring a waist beam on the envelope structure, wherein the support structure also comprises a support beam, and the support beam is arranged on the waist beam to reinforce the envelope structure. Pour the waist rail in-process, set up first sleeve pipe and second sleeve pipe on the waist rail, when needs monitor bearing structure's support axle power, a cable for monitoring the strainometer of bearing axle power can be drawn forth from first sleeve pipe, because first sleeve pipe is located waist rail and envelope's junction, therefore the first sleeve pipe of cable accessible directly arrives ground along envelope, make the cable arrange neatly, can not interfere the normal clear of other construction operations, also avoid taking place the cable simultaneously because unsettled and easy problem of breaking of bumping. When concrete is required to be poured by the concrete pump, the pump pipe can pass through the waist beam through the second sleeve to directly reach a pouring area, so that a support of the pump pipe does not need to be erected around the waist beam, the pump pipe is convenient to fix, and the construction cost is saved. When the waist rail is dismantled, the fixed waist rail of hoist and mount rope can wear to establish in the second sleeve to penetrate the rope saw and cut the segmentation to the waist rail in first sleeve, later, utilize the hoist and mount rope will cut the waist rail hoist and mount out deep basal pit after the segmentation. Compared with a method for chiseling the waist beam by using the air compressor in the prior art, the waist beam dismantling method is simple, time-saving and labor-saving, and can not generate large noise, dust and the like, so that the influence on the surrounding environment is avoided.

Drawings

Fig. 1 is a sectional view of a foundation pit supporting structure provided by the present invention;

fig. 2 is a perspective view of a foundation pit supporting structure provided by the present invention;

fig. 3 is a schematic view of the foundation pit supporting structure provided by the present invention when the pump pipe is inserted through the foundation pit supporting structure;

fig. 4 is a schematic view of the foundation pit supporting structure provided by the present invention when erecting a support of the pump pipe;

fig. 5 is a schematic view of the foundation pit supporting structure provided by the present invention when it is removed;

fig. 6 is a schematic view of the foundation pit supporting structure provided by the present invention when installing the guard rail;

fig. 7 is a schematic view of a protective plate of a foundation pit supporting structure provided by the present invention;

fig. 8 is a first schematic view of a wale reinforcing bar of the supporting structure for a foundation pit according to the present invention;

figure 9 is the utility model provides a second schematic diagram of the waist rail atress muscle of underground structure.

In the figure:

1. an enclosure structure; 2. a wale; 21. a first sleeve; 22. a second sleeve;

23. a stress rib; 24. reinforcing ribs; 31, embedding a cylinder; 4. a protection plate; 41. a support bar;

100. a pump tube; 101. hoisting a rope; 200. a support; 201. and (4) a guardrail.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

As shown in fig. 1 and 3, the utility model provides a supporting structure for foundation ditch can wear to establish cable and pump line 100 for the job site wiring is neat, reduces the construction degree of difficulty, saves construction cost. Meanwhile, as shown in fig. 5, the foundation pit supporting structure can also be provided with a rope saw and a hoisting rope 101 in a penetrating manner, so that the process of dismantling the waist rail 2 is simplified, time and labor are saved, and the environment is protected. The foundation pit supporting structure comprises a support structure 1 and a supporting structure.

Wherein, envelope 1 encircles along circumference and locates on the lateral wall of foundation ditch, and bearing structure includes waist rail 2, and on envelope 1 was located along circumference ring to waist rail 2, first sleeve pipe 21 and second sleeve pipe 22 were worn to be equipped with along vertical on the waist rail 2, and first sleeve pipe 21 is located waist rail 2 and envelope 1's junction for wear to establish cable or rope saw, and second sleeve pipe 22 sets up with first sleeve pipe 21 along the direction interval that stretches out of waist rail 2, is used for wearing to establish pump line 100 or hoist and mount rope 101.

In the process of constructing the deep foundation pit, firstly, the building enclosure 1 is arranged around the foundation pit and is used for bearing the load of the foundation pit. And then, casting a waist beam 2 on the envelope structure 1, wherein the support structure further comprises a support beam, and the support beam is arranged on the waist beam 2 so as to reinforce the envelope structure 1. In the process of pouring the wale 2, the first sleeve 21 and the second sleeve 22 are arranged on the wale 2, when the supporting axial force of the supporting structure needs to be monitored, a cable of the strain gauge for monitoring the supporting axial force can be led out from the first sleeve 21, and the first sleeve 21 is located at the connecting position of the wale 2 and the enclosure structure 1, so that the cable can directly reach the ground along the enclosure structure 1 through the first sleeve 21, the cable is neatly arranged, the normal operation of other construction operations cannot be interfered, and meanwhile, the problem that the cable is easy to break due to suspension is avoided. Referring to fig. 3 and 4, when concrete is required to be cast by using a concrete pump, the pump pipe 100 may pass through the wale 2 through the second casing 22 and directly reach the casting area, so that the bracket 200 of the pump pipe 100 does not need to be erected around the wale 2, the pump pipe 100 is conveniently fixed, and the construction cost is saved. As shown in fig. 5, when the wale 2 is removed, the hoisting rope 101 may be inserted into the second sleeve 22 to fix the wale 2, and a rope saw may be inserted into the first sleeve 21 to cut and segment the wale 2, and then the hoisting rope 101 may be used to hoist the sectioned wale 2 into a deep foundation pit. Compared with the method for chiseling the waist rail 2 by using the air compressor in the prior art, the method for removing the waist rail 2 is simple, time-saving and labor-saving, can not generate large noise, dust and the like, and avoids influencing the surrounding environment.

Further, the supporting structure of the foundation pit further comprises a connecting assembly, wherein the connecting assembly is used for connecting the wale 2 with the bracket 200 of the pump pipe 100, or the connecting assembly is used for connecting the wale 2 with the guardrail 201 of the wale 2. Referring to fig. 3 and 4, when concrete is poured using a concrete pump, the pump pipe 100 passes through the second sleeve 22 on the wale 2 and directly extends into a pouring area, and then the bracket 200 of the pump pipe 100 is mounted on the wale 2 through the connection assembly, thereby fixing the pump pipe 100, preventing the pump pipe 100 from flying out and hurting people due to large stress in the concrete pouring process, improving the construction safety, and meanwhile, since the pump pipe 100 is directly mounted on the wale 2, the bracket 200 does not need to be set up by bypassing the wale 2, thereby saving the construction cost. In addition, as shown in fig. 6, coupling assembling can also link to each other with guardrail 201, passes through coupling assembling with guardrail 201 and fixes guardrail 201 at the wale 2 edge, for constructor provides walking channel, the risk that constructor falls has been avoided in guardrail 201's setting, can improve construction safety nature. Later stage constructor can directly carry out the data measurement of support axle power on wale 2, and simultaneously in the excavation and the material transportation, constructor also can stand and command on wale 2, and is safer.

Alternatively, referring to fig. 1 and 2, the connection assembly includes an embedded cylinder 31 and a connection member, the embedded cylinder 31 is embedded on the wale 2, one end of the connection member is detachably connected to the embedded cylinder 31, and the other end of the connection member is connected to the bracket 200 of the pump pipe 100 or the guardrail 201 of the wale 2. Before the wale 2 is poured, the embedded cylinders 31 are fixed at proper positions of the stress bars 23 of the wale 2 according to design requirements, then concrete is poured, and the embedded cylinders 31 are embedded into the wale 2 after concrete is formed. When the bracket 200 of the pump pipe 100 or the guard rail 201 of the wale 2 needs to be connected, one end of the connecting member is first installed in the embedded cylinder 31, and the other end of the connecting member protrudes out of the wale 2, and then the bracket 200 or the guard rail 201 is fixed to the other end of the connecting member, so that the bracket 200 or the guard rail 201 is fixed to the wale 2.

Preferably, the embedded cylinder 31 and the connecting member in this embodiment are a reinforcing bar connector and a deformed steel bar, which are convenient to obtain and low in cost, the reinforcing bar connector has threads inside, the deformed steel bar is screwed into the reinforcing bar connector through the threads, and the threaded connection mode is reliable in connection and convenient to install and detach.

Further, referring to fig. 2, a plurality of embedded cylinders 31 are arranged on the wale 2 at intervals in the circumferential direction of the second sleeve 22, and a plurality of embedded cylinders 31 are arranged at intervals along the length direction of the wale 2 at one end of the wale 2 away from the envelope 1. As shown in fig. 4 and 6, the embedded cylinder 31 around the second sleeve 22 is used for connecting with the bracket 200 of the pump pipe 100, and the plurality of embedded cylinders 31 at the end of the wale 2 far away from the building envelope 1 are used for connecting with the guard rail 201 of the wale 2. In this embodiment, the second sleeve 22 is used as a center, and 4 embedded cylinders 31 are circumferentially arranged at equal intervals to fix the support 200 of the pump pipe 100, and the plurality of embedded cylinders 31 at one end of the wale 2, which is far away from the envelope structure 1, are also arranged at equal intervals to be connected with the guard rail 201 of the wale 2. In other embodiments, 5, 6, etc. pre-buried cylinders 31 in the circumferential direction of the second sleeve 22 may be provided, or may be provided at unequal intervals, the pre-buried cylinders 31 at the end of the wale 2 away from the envelope 1 may also be provided at unequal intervals, and the number and the interval of the pre-buried cylinders 31 are selected according to design requirements, and are not limited to the number and the interval illustrated in this embodiment, as long as the construction requirements can be met.

Furthermore, the connecting assembly further comprises a plugging piece, and the plugging piece is used for plugging the embedded cylinder 31 to prevent sundries from entering the embedded cylinder 31, so that the embedded cylinder 31 is prevented from being connected with the connecting piece, and the connection quality of the support 200 or the guardrail 201 is further prevented from being affected. The shutoff piece in this embodiment is cylindrical, is convenient for and the reinforcing bar adapter adaptation, and it is made by rubber, and rubber materials elasticity is good, can produce certain elastic deformation to it is tight with the shutoff of a pre-buried section of thick bamboo 31, and rubber materials is wear-resisting, long service life.

Alternatively, as shown in fig. 1, the top end of the first sleeve 21 and the top end of the second sleeve 22 are protruded on the top surface of the wale 2, so as to prevent the sundries on the wale 2 from entering the first sleeve 21 and the second sleeve 22 from the top ends of the first sleeve 21 and the second sleeve 22, and prevent the first sleeve 21 and the second sleeve 22 from being blocked by the sundries and affecting the use of the first sleeve 21 and the second sleeve 22. Meanwhile, sundries on the waist rail 2 can be prevented from falling down along the first sleeve 21 and the second sleeve 22 to injure constructors, and the safety of the constructors is guaranteed.

Optionally, referring to fig. 6 and 7, in another embodiment, the top end of the second sleeve 22 may also be flush with the top surface of the wale 2, the foundation pit supporting structure further includes a protection plate 4, a support rod 41 is disposed on the protection plate 4, and the support rod 41 is detachably connected to the embedded cylinder 31, so that the protection plate 4 can cover the top end opening of the second sleeve 22. In order to facilitate the constructor to walk on the wale 2 and prevent stumbling during construction, the top end of the second sleeve 22 is set to be flush with the top surface of the wale 2. Through setting up guard plate 4 can prevent that second sleeve 22 from blockking up and prevent that debris in the second sleeve 22 from dropping and injure constructor by a crashing object, guarantee constructor's safety. The setting of bracing piece 41 can make guard plate 4 spacing on waist rail 2 through pre-buried section of thick bamboo 31, prevents that guard plate 4 from breaking away from second sleeve 22 to play good guard action. Specifically, the bracing piece 41 is provided with a plurality ofly on protection plate 4, and during the installation protection plate 4, correspond respectively with a plurality of bracing pieces 41 on protection plate 4 and insert in second sleeve 22 pre-buried section of thick bamboo 31 all around, can be fixed protection plate 4 to the open-top of closing cap second sleeve 22, simple to operate. The guard plate 4 in this embodiment is made by the steel sheet, and the intensity of steel sheet is high, and non-deformable only needs to cut into suitable size and can use, and processing is convenient, practices thrift the cost. The bracing piece 41 in this embodiment sets up to 4 to in the cooperation with the pre-buried section of thick bamboo 31 of second sleeve 22 circumference, it is made by the reinforcing bar, and the hardness of reinforcing bar is high, and convenient for draw materials cuts into suitable length with the reinforcing bar, is fixed in the steel sheet through the welded mode around, welded mode material saving connects stably, production efficiency is high.

Optionally, the first sleeve 21 and the second sleeve 22 are provided in plurality, and the plurality of first sleeves 21 and the plurality of second sleeves 22 are distributed at intervals along the length direction of the wale 2. The setting of a plurality of first sleeves 21 can separate into a plurality of segmentation with wale 2 to do benefit to and wear to establish the rope saw in first sleeve 21 with wale 2 cutting segmentation, be convenient for demolish wale 2. The arrangement of a plurality of second sleeves 22 can provide fixed basis for every section waist rail 2, is favorable to wearing to establish the waist rail 2 of every section after the cutting of hoist and mount rope 101 hoist.

Referring to fig. 5, in the process of removing the wale 2, the hoisting rope 101 is firstly passed through the second sleeve 22 to fix a section of the wale 2, then the rope saw is used to pass through the first sleeve 21 on the wale 2, the section of the wale 2 is cut and separated in the longitudinal direction and the transverse direction, and then the crane is used to hoist the section of the wale 2 out of the foundation pit. In this embodiment, the distance between two adjacent first sleeves 21 is set to be 2.5m. The distance between two adjacent second sleeves 22 is set to be 1m-1.5m, the distance between two adjacent second sleeves 22 is not too large, and the larger the distance is, the larger the size and the mass of the waist rail 2 to be hoisted each time are, and the hoisting operation cost is increased. In other embodiments, the arrangement pitch of the first sleeve 21 and the second sleeve 22 is selected according to design requirements, and is not limited to the pitch exemplified in the embodiment as long as construction requirements can be satisfied.

Preferably, the diameter of the second sleeve 22 is larger than the diameter of the first sleeve 21. Because the first sleeve 21 is located at the joint of the waist rail 2 and the envelope 1, the designed smaller diameter of the first sleeve 21 can avoid the first sleeve 21 from weakening the connection strength of the waist rail 2 and the envelope 1 too much, ensure that the waist rail 2 can sufficiently support the envelope 1, and simultaneously ensure the safety of constructors when the constructors walk on the waist rail 2. Illustratively, in this embodiment, the diameter of the first casing 21 is set to 2.5cm to facilitate the threading of a cable or a rope saw, and the diameter of the second casing 22 is set to 8cm-30cm to facilitate the threading of a pump pipe 100 or a hoisting rope 101. The diameter of the first casing 21 can be adaptively selected according to the specifications of the cable and the rope saw, and the diameter of the second casing 22 can be adaptively selected according to the specifications of the pump pipe 100 and the hoisting rope 101, and is not limited to the range of the diameters listed in the embodiment as long as the construction requirements can be satisfied.

Optionally, the first sleeve 21 and the second sleeve 22 are made of polyvinyl chloride, which is light, convenient to carry and install, waterproof, moistureproof, flame-retardant, heat-insulating, stable in property, and has excellent electrical insulation performance.

Alternatively, referring to fig. 8 and 9, the wale 2 includes a concrete structure and a stress bar 23 embedded in the concrete structure, and a reinforcing rib 24 is provided on the stress bar 23 along the circumferential direction of the second sleeve 22 at the penetrating position of the second sleeve 22. In this embodiment, the reinforcing ribs 24 are only provided at the positions of the second sleeve 22 on the stress ribs 23 where the pump tube 100 needs to be inserted. Because when using the concrete pump to pour concrete, the pump line 100 directly stretches into the pouring area through the second sleeve 22, however, the concrete pump can produce great impact force during operation, and this kind of impact force can act on the stress bar 23 of the wale 2 through the second sleeve 22 to weaken the structural strength of the stress bar 23, and then influence the stability of the structure of the wale 2. Therefore, the reinforcing rib 24 is additionally arranged at the second sleeve 22 penetrating through the pump pipe 100, the structural strength of the stress rib 23 can be locally increased, the weak point of the stress rib 23 is prevented, and the impact force of the concrete pump during working is prevented from influencing the overall structural strength of the waist rail 2. In this embodiment, the stress bar 23 is formed by binding steel bars, the stress bar 23 and the reinforcing ribs 24 are preferably made of deformed steel bars, and the contact area between the deformed steel bars and the concrete is larger, so that the combination degree between the steel bars and the concrete can be increased. In the process of binding the stress bar 23, the second sleeve 22 is arranged on the proper position of the stress bar 23 according to the design requirement, then the reinforcing rib 24 is fixed on the circumference of the second sleeve 22, and then the concrete pouring is carried out, after the concrete is formed, the second sleeve 22 is embedded in the concrete of the wale 2.

In this embodiment, as shown in fig. 9, when binding the stress bar 23, the steel bar of the stress bar 23 at the position where the second sleeve 22 needs to be inserted is hot-bent to form a circular through hole, and then the second sleeve 22 is inserted into the through hole and tightened, and then the reinforcing rib 24 is fixed around the through hole of the stress bar 23. It should be noted that, referring to fig. 3 and fig. 9, since the pump pipe 100 can directly extend into the pouring area through the second sleeve 22, a large impact force is generated when the concrete pump works, and the impact force acts on the stress bar 23 through the second sleeve 22, so as to weaken the structural strength of the stress bar 23, and further affect the stability of the structure of the wale 2, therefore, the reinforcing rib 24 needs to be arranged at the second sleeve 22 where the pump pipe 100 is inserted to increase the strength of the stress bar 23, and the stress bar 23 at the second sleeve 22 where the pump pipe 100 is not inserted does not receive external impact, so that the reinforcing rib 24 does not need to be additionally arranged. In addition, first sleeve pipe 21 is because the setting is in the edge of atress muscle 23, and the diameter is less, consequently can not produce great weakening to the intensity of atress muscle 23, and the event, only need be in the relevant position of atress muscle 23 with the reinforcing bar bending machine form can wear to establish first sleeve pipe 21 little perforation can.

Referring to fig. 1, 2, 8 and 9, in the stage of binding the reinforcing bars on the wale 2, according to the construction requirement, the stressed ribs 23 at the positions where the first sleeve 21 and the second sleeve 22 are required to be penetrated are simmered and bent to form circular through holes, then the first sleeve 21 and the second sleeve 22 are penetrated into the through holes and are tightened, and meanwhile, reinforcing ribs 24 are additionally arranged at the positions of the stressed ribs 23 around the second sleeve 22 where the pump pipe 100 is required to be penetrated. And fixing a plurality of embedded cylinders 31 at the stress bar 23 around each second sleeve 22 and the stress bar 23 far away from one end of the envelope 1, and then pouring concrete, wherein after the concrete strength meets the requirement, the first sleeve 21, the second sleeve 22 and the embedded cylinders 31 are embedded into the wale 2. In this embodiment, the top end of the first sleeve 21 and the top end of the second sleeve 22 are both protruded on the wale 2.

When monitoring the supporting shaft force of the foundation pit supporting structure, according to the design requirement, the strainometer for monitoring the supporting shaft force is installed at the position to be monitored, and the cable of the strainometer is led out from the first sleeve 21 to directly reach the ground along the enclosure structure 1, so that the cable arrangement is neat, the normal operation of other construction operations can not be interfered, and the problem that the cable is easy to break due to suspension is also avoided. As shown in fig. 3 and 4, when concrete is cast using a concrete pump, first, the pump pipe 100 passes through the wale 2 through the second casing 22 and directly extends into a casting area, then the blocking member on the embedded cylinder 31 around the second casing 22 is removed, one end of the deformed steel bar is screwed on the embedded cylinder 31 around the second casing 22, and then the bracket 200 of the pump pipe 100 is connected to the other end of the deformed steel bar, thereby fixing the bracket 200 of the pump pipe 100.

In addition, as shown in fig. 6, since the top end of the second sleeve 22 is protruded on the top surface of the wale 2, when the wale 2 needs to walk, the portion of the second sleeve 22 protruded from the top surface of the wale 2 is first trimmed, and then the support rods 41 of the protection plate 4 are inserted into the embedded cylinders 31 around the second sleeve 22 to cover the second sleeve 22. Then, twist a screw-thread steel respectively on keeping away from 1 end of envelope a plurality of pre-buried section of thick bamboo 31 of envelope with wale 2, install guardrail 201 on wale 2 through the screw-thread steel afterwards to prevent that constructor from falling, guarantee construction safety.

As shown in fig. 5, when the supporting structure of the foundation pit is removed, the hoisting rope 101 is passed through the second sleeve 22 to fix a section of the wale 2, then a rope saw is used to pass through the first sleeve 21 on the section of the wale 2, the section of the wale 2 is cut and separated along the longitudinal direction and the transverse direction of the first sleeve 21, and then the section of the wale 2 is hoisted out of the foundation pit by using a crane.

Therefore, in the foundation pit supporting structure provided by the embodiment, the waist beam 2 can penetrate through the cable and the pump pipe 100, so that the wiring on the construction site is neat, the construction difficulty is reduced, and the construction cost is saved. Meanwhile, in the subsequent dismantling construction process, the waist rail 2 can also be provided with the rope saw and the hoisting rope 101 in a penetrating way, so that the waist rail is hoisted out of the foundation pit in a segmented manner through cutting, the process of dismantling the waist rail 2 is simplified, time and labor are saved, and the environment is protected.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. Excavation supporting construction, its characterized in that includes:

the support structure (1) is circumferentially arranged on the side wall of the foundation pit;

bearing structure, including waist rail (2), waist rail (2) are located along the circumference ring on envelope (1), waist rail (2) are gone up along vertical wearing to be equipped with first sleeve pipe (21) and second sleeve pipe (22), first sleeve pipe (21) are located waist rail (2) with the junction of envelope (1) is used for wearing to establish cable or rope saw, second sleeve pipe (22) with first sleeve pipe (21) are followed the direction interval that stretches out of waist rail (2) sets up for wearing to establish pump line (100) or hoist and mount rope (101).

2. The foundation pit support structure according to claim 1, characterized in that it further comprises a connection assembly for connecting the wale (2) with a bracket (200) of the pump pipe (100) or a guardrail (201) of the wale (2).

3. The foundation pit supporting structure according to claim 2, wherein the connecting assembly comprises an embedded cylinder (31) and a connecting piece, the embedded cylinder (31) is embedded on the wale (2), one end of the connecting piece is detachably connected with the embedded cylinder (31), and the other end of the connecting piece is connected with a support (200) of the pump pipe (100) or a guardrail (201) of the wale (2).

4. The foundation pit supporting structure according to claim 3, wherein the waist beam (2) is provided with a plurality of embedded cylinders (31) at intervals in the circumferential direction of the second sleeve (22), and one end of the waist beam (2) far away from the enclosure structure (1) is provided with a plurality of embedded cylinders (31) at intervals in the length direction of the waist beam (2).

5. The foundation pit support structure according to claim 3, wherein the connection assembly further comprises a plugging member for plugging the embedded cylinder (31).

6. The foundation pit supporting structure according to claim 3, wherein the top end of the second sleeve (22) is flush with the top surface of the waist beam (2), the foundation pit supporting structure further comprises a protection plate (4), a support rod (41) is arranged on the protection plate (4), and the support rod (41) is detachably connected with the embedded cylinder (31) so that the protection plate (4) can cover the top end opening of the second sleeve (22).

7. The foundation pit support structure according to claim 1, wherein the top end of the first sleeve (21) and the top end of the second sleeve (22) are both protruded on the top surface of the wale (2).

8. The foundation pit supporting structure according to any one of claims 1-7, wherein the first sleeve (21) and the second sleeve (22) are provided in plurality, and the first sleeve (21) and the second sleeve (22) are distributed at intervals along the length direction of the wale (2).

9. The foundation pit supporting structure according to any one of claims 1-7, wherein the wale (2) comprises a concrete structure and a stress bar (23) embedded in the concrete structure, and a reinforcing rib (24) is arranged on the stress bar (23) along the circumferential direction of the second sleeve (22) at the penetrating position of the second sleeve (22).

10. Foundation pit support structure according to any one of claims 1-7, characterized in that the diameter of the second sleeve (22) is larger than the diameter of the first sleeve (21).

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