House building foundation pit supporting structure and construction method thereof

Abstract

The invention relates to the technical field of foundation pit supporting, in particular to a building foundation pit supporting structure and a construction method thereof. Supporting protection at the joint of the foundation pit and the ground is achieved by arranging the bending assembly, compared with single-face protection, the L-shaped supporting area is larger, and the stability effect on the soil structure at the joint of the foundation pit and the ground is higher; the abutting assemblies are arranged at the bending positions of the two plates of the bending assembly, the abutting assemblies limit the moving range of the longitudinal plates inside and outside the soil through the trapezoidal plates, and supporting of the transverse plates to the longitudinal plates is increased through the inclined plates; meanwhile, compared with a traditional rod support, the abutting assembly is smaller in occupied space and not prone to displacement due to external acting force, the whole structure is better in stability and strength, and installation is convenient and more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit support, in particular to a house building foundation pit support structure and a construction method thereof. BACKGROUND

[0002] The soil retaining plate is used as a cover in the foundation pit support structure, mainly for covering the exposed soil surface to prevent small soil body from peeling off and collapsing. In order to ensure the retaining strength, the existing soil retaining plate is usually provided with foundation piles inside the foundation pit, and then a metal rod is used to abut one end of the foundation pile and the other end of the soil retaining plate. In order to ensure the supporting strength, the connecting point of the metal rod and the soil retaining plate is usually above the middle of the soil retaining plate, which leads to the compression of the available space in the foundation pit, and the metal rod is easily damaged by mistake in the later operation, resulting in the failure of the soil retaining plate. In addition, the soil retaining plate will have a slight angular deviation during use due to the change of soil structure, which is prone to loosening and reducing the supporting force for the traditional supporting mode. Therefore, a house building foundation pit support structure and a construction method thereof are needed. SUMMARY

[0003] The present application aims to overcome the above-mentioned deficiencies, and provides a house building foundation pit support structure and a construction method thereof, which has the advantages of convenient installation, good structural strength, quick disassembly and strong adaptability.

[0004] To achieve the above-mentioned purpose, in the first aspect, the present application provides a house building foundation pit support structure, comprising a bending assembly, a fixed pile and an abutting assembly, the bending assembly comprises a transverse plate and a longitudinal plate, a plurality of connecting strips one are equidistantly arranged on one side of the transverse plate, and a plurality of connecting strips two are equidistantly arranged on one side of the longitudinal plate; the end of the connecting strip one away from the transverse plate is rotationally connected with the end of the connecting strip two close to the longitudinal plate, in use, the fixed pile passes through the transverse plate and is fixed at the bottom of the foundation pit; the abutting assembly comprises an inclined plate and a trapezoidal plate, the inclined edges of a plurality of trapezoidal plates are parallelly connected with the inclined plate, and when the longitudinal plate swings around the transverse plate, the trapezoidal plate is vertically inserted into the gap between the adjacent connecting strips one along the parallel surface direction until the side of the inclined plate abuts against the side wall of the fixed pile.

[0005] Further, the other side of the transverse plate is provided with a fulcrum assembly, the fulcrum assembly comprises a plurality of U-shaped pieces, the U-shaped pieces are parallelly arranged with their one end fixedly connected with the other side of the transverse plate.

[0006] Further, the fulcrum assembly further comprises a movable plate one and a movable plate two, one side of the movable plate one is rotationally connected with the bottom of the transverse plate, the other side of the movable plate one is rotationally connected with one side of the movable plate two, and the other side of the movable plate two is rotationally connected with the other end of the opening of the U-shaped piece.

[0007] Further, the other side of the movable plate two is provided with a plurality of connecting strips three in parallel, the other end of the U-shaped piece is cross-rotatingly connected with the connecting strips three, when the angle between the movable plate two and the U-shaped piece is less than 180°, the other end of the U-shaped piece can be movably inserted into the bottom of the foundation.

[0008] Further, the rotating connection part between the movable plate one and the movable plate two is coaxially provided with a roller, the roller is annularly provided with a plurality of lifting plates along the axial direction, the fulcrum assembly further comprises a loosening piece, the loosening piece comprises a pushing plate, a movable rod and an elastic sleeve, a plurality of movable rods are equidistantly arranged on one side of the pushing plate, at least two elastic sleeves are respectively sleeved on different movable rods, the side wall of the elastic sleeve is fixedly connected with the movable plate two, the elastic sleeve gives the pushing plate a pre-tightening force close to the lifting plate through the movable rod, and the lifting plate drives the roller to rotate so that the lifting plate drives the pushing plate to move at intervals.

[0009] Further, the transverse plate is provided with a transition block with wide edges and a narrow middle portion, and the fixed stake is inserted into the bottom of the foundation through the transition block.

[0010] Further, the inclined plate is provided with a groove corresponding to the fixed stake on the side close to the fixed stake.

[0011] Further, the structure further comprises an auxiliary fixing assembly, the auxiliary fixing assembly comprises a fixed plate, a blocking plate and a supporting rod, another fixed stake is used to fix the fixed plate on the ground around the foundation pit, the blocking plate is provided with a plurality of fixing grooves, one side of the fixed plate is provided with a plurality of rotating shaft parts which can be embedded in the fixing grooves, the rotating shaft parts are rotatingly connected with the fixing grooves, one end of the supporting rod is rotatingly connected with the top of the fixed plate, and the top of the blocking plate is provided with a recess for placing the other end of the supporting rod, and the depth of the recess gradually decreases from top to bottom.

[0012] Further, the supporting rod has two, and a stepping plate is arranged between the two supporting rods.

[0013] In the second aspect, the application provides a construction method of a house building foundation pit supporting structure, which is based on the house building foundation pit supporting structure described above and specifically comprises the following steps: S1: determining the distance between the bottom of the bending piece and the foundation pit according to the length of the transverse plate, then leaning the bending piece in the unfolded state against the bottom of the foundation pit, and at this time, the fulcrum assembly is inserted into the bottom of the foundation pit; S2: swinging the longitudinal plate so that the connecting strips two are inserted into the bottom of the foundation pit along the side wall of the foundation pit, at this time, the longitudinal plate and the transverse plate are close to the side wall and the bottom surface of the foundation pit, and then the fixed stake is inserted into the transverse plate for primary fixation; S3: inserting the abutting assembly into the gap between the adjacent connecting strips one until the one end of the inclined plate abuts against the longitudinal plate and the other end abuts against the fixed stake; S4: make the blocking plate contact with the top of the longitudinal plate and determine the position of the fixed plate, make another fixed pile fix the fixed plate around the foundation pit, and then swing the support rod to make it slide in the groove to adjust the angle between the fixed plate and the blocking plate until the support rod cannot swing further.

[0014] By adopting the technical scheme, the application has the following beneficial effects: 1. The bending assembly is arranged to achieve support and protection of the junction of the foundation pit and the ground, and the L-shaped support area is larger than that of a single face, and the soil structure stability of the junction of the foundation pit and the ground is stronger; the abutment assembly is arranged at the bending part of the two plates of the bending assembly, the abutment assembly not only limits the movement range of the longitudinal plate inside and outside the soil through the trapezoidal plate, but also increases the support of the transverse plate on the longitudinal plate through the inclined plate, and the abutment assembly occupies a smaller space than the traditional rod support and is less likely to be displaced by external forces, so that the whole structure has better stability and strength, is easy to install and more accurate.

[0015] 2. The fulcrum assembly is arranged, the bending part of the U-shaped piece is used as the contact point between the bottom of the bending assembly and the bottom of the foundation pit, the temporary fulcrum strength of the support structure with the bottom of the foundation pit during installation is ensured, and the temporary fulcrum can also move along with the adaptive adjustment of the structure; the movable plate one and the movable plate two are arranged to cooperate with the transverse plate during installation, and the soil is filled in the space between the two movable plates during the movement of the transverse plate to the side wall of the foundation pit, so as to increase the grip of the transverse plate after the final determination of the position; meanwhile, the loosening piece is arranged to loosen the soil in the movable plate one and the movable plate two during disassembly, so as to facilitate subsequent disassembly.

[0016] 3. The auxiliary fixing piece is arranged to assist the longitudinal plate in adhering to the side wall of the foundation pit, and the angle between the fixed plate and the blocking plate is adjusted by the support rod, so as to facilitate the adaptive adjustment of the longitudinal plate by soil loosening in the later period.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

[0018] It is obvious that the purposes of the present application and other purposes will become more apparent after the description of the preferred embodiments with various drawings and drawings described below.

[0019] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, one or more preferred embodiments are described below, and the detailed description is as follows in conjunction with the shown drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are intended to provide a further understanding of the application, and are made a part of the description. Embodiments of the application will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

[0021] In the drawings, like numerals refer to like parts through the several views, and the drawings are in schematic form and are not necessarily to scale.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative work.

[0023] Figure 1 It is a schematic view of the overall structure of the house building foundation pit support structure of the present application; Figure 2 It is a side view of the house building foundation pit support structure of the present application; Figure 3 It is a schematic view of the bending assembly structure of the house building foundation pit support structure of the present application; Figure 4 It is a schematic view of the lateral plate of the house building foundation pit support structure of the present application; Figure 5 It is a side view of the fulcrum assembly of the house building foundation pit support structure of the present application; Figure 6 It is a partial sectional view of the fulcrum assembly of the house building foundation pit support structure of the present application; Figure 7 It is a schematic view of the abutting assembly structure of the house building foundation pit support structure of the present application; Figure 8 It is a structure separation view of the auxiliary fixing assembly of the house building foundation pit support structure of the present application; Figure 9 It is a schematic view of the transition block structure of the house building foundation pit support structure of the present application.

[0024] Main figure mark explanation: 1-bending assembly; 11-lateral plate; 12-longitudinal plate; 111-connection strip one; 121-connection strip two; 2-fixing pile; 3-abutting assembly; 31-inclined plate; 311-slot; 32-trapezoidal plate; 4-fulcrum assembly; 41-U-shaped piece; 42-moving plate one; 43-moving plate two; 431-connecting strip three; 44-roller; 441-picking plate; 45-loosening piece; 451-pushing plate; 452-moving rod; 453-elastic sleeve; 5-transition block; 6-assistant fixing assembly; 61-fixing plate; 611-rotation shaft part; 622-groove; 62-stop plate; 621-fixing groove; 63-bracing rod; 64-tread plate. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application but not to limit the present application.

[0026] REFERENCE Figures 1-9 In a first aspect, the present application provides a house building foundation pit supporting structure, comprising a bending assembly 1, a fixing pile 2, an abutting assembly 3 and an assistant fixing assembly 6.

[0027] The bending assembly 1 comprises a transverse plate 11 and a longitudinal plate 12, the transverse plate 11 is provided with a plurality of connecting strips one 111 equidistantly on one side, the longitudinal plate 12 is provided with a plurality of connecting strips two 121 equidistantly on one side; the end of the connecting strip one 111 away from the transverse plate 11 is rotationally connected with the end of the connecting strip two 121 close to the longitudinal plate 12. In use, the fixing pile 2 passes through the transverse plate 11 and is fixed at the bottom of the foundation pit, in order to prevent the up and down deviation of the transverse plate 11 caused by the uneven bottom of the foundation pit, the transverse plate 11 is nested with two transition blocks 5 with wide sides and narrow middle, the narrow middle structure leaves a deformation space for the slight change of the transverse plate 11, the fixing pile 2 passes through the transition block 5 and is inserted into the bottom of the foundation pit. The abutting assembly 3 comprises an inclined plate 31 and a trapezoidal plate 32, the trapezoidal plate 32 is isosceles trapezoidal, the parallel side of a plurality of trapezoidal plates 32 is connected with the inclined plate 31 in parallel, when the longitudinal plate 12 swings around the transverse plate 11, the trapezoidal plate 32 is vertically inserted into the gap between the adjacent connecting strips one 111 along the parallel surface direction until the side of the inclined plate 31 abuts against the side wall of the fixing pile 2, in order to increase the abutting strength of the inclined plate 31, the inclined plate 31 is provided with a slot 311 corresponding to the fixing pile 2 on the side close to the fixing pile 2, if necessary, an extension part for bolt fixing is provided on the other side of the inclined plate 31, so that the inclined plate 31 is fixedly connected with the longitudinal plate 12 after positioning.

[0028] In order to increase the friction between the bottom of the bending assembly 1 and the bottom of the foundation pit during installation, the other side of the transverse plate 11 is provided with a fulcrum assembly 4. The fulcrum assembly 4 includes a plurality of U-shaped pieces 41, which are arranged in parallel with the opening of the U-shaped piece 41 facing the transverse plate 11 and are fixedly connected to the other side of the transverse plate 11 at one end. The bending part of the U-shaped piece 41 is in contact with the bottom of the foundation pit, thereby ensuring the temporary support of the transverse plate 11 to the foundation pit and ensuring the mobility of the transverse plate 11. In order to further increase the grip of the transverse plate 11, the fulcrum assembly 4 further includes a movable plate one 42 and a movable plate two 43. One side of the movable plate one 42 is rotatably connected to the bottom of the transverse plate 11, the other side of the movable plate one 42 is rotatably connected to one side of the movable plate two 43, and the other end of the opening of the U-shaped piece 41 is rotatably connected to the other side of the movable plate two 43. When the supporting structure is installed, the movable plate swings in the direction close to the transverse plate 11 under the reaction force of the soil. After the abutting assembly 3 is inserted, because the transverse plate 11 moves excessively during the installation of the longitudinal plate 12, the transverse plate 11 will reset in the opposite direction of the side wall of the foundation pit. At this time, the space formed by the movable plate one 42 and the movable plate two 43 and the transverse plate 11 can be filled with soil, thereby increasing the grip of the edge of the transverse plate 11 and preventing the edge from being raised to leave a safety hazard. In order to increase the force of the fulcrum and make the U-shaped piece 41 further penetrate, the other side of the movable plate two 43 is provided in parallel with a plurality of connecting rods three 431. The other end of the U-shaped piece 41 is cross-rotatably connected to the connecting rod three 431. When the angle between the movable plate two 43 and the U-shaped piece 41 is less than 180°, the other end of the U-shaped piece 41 can be movably inserted into the bottom of the foundation. In order to realize the quick disassembly of the bending assembly 1, the rotation connection between the movable plate one 42 and the movable plate two 43 is coaxially provided with a roller 44. The roller 44 is annularly provided with a plurality of pick plates 441 along the axial direction. The fulcrum assembly 4 further includes a loosening piece 45, which includes a lever 451, a movable rod 452, and an elastic sleeve 453. A plurality of movable rods 452 are equally arranged on one side of the lever 451. At least two elastic sleeves 453 are respectively sleeved on different movable rods 452. The side wall of the elastic sleeve 453 is fixedly connected to the movable plate two 43. The elastic sleeve 453 gives the lever 451 a pre-tightening force close to the pick plate 441 through the movable rod 452, drives the roller 44 to rotate, and makes the pick plate 441 drive the lever 451 at intervals. The rotation mode can be to provide a motor inside the roller 44, so that the pick plate 441 drives the lever 451 at intervals, so that the movable rod 452 reciprocates along the elastic sleeve 453, realizes the loosening of the soil in the space of the movable plate, and reduces the grip of the transverse plate 11.

[0029] The auxiliary fixing assembly 6 is arranged to increase the fitting degree of the longitudinal plate 12 and the side wall of the foundation pit, and the auxiliary fixing assembly 6 comprises a fixing plate 61, a blocking plate 62 and a supporting rod 63. Another fixing pile 2 is arranged to fix the fixing plate 61 on the ground around the foundation pit. The blocking plate 62 is provided with a plurality of fixing grooves 621. One side of the fixing plate 61 is provided with a plurality of rotating shaft portions 611 which can be embedded into the fixing grooves 621. The rotating shaft portions 611 are rotationally connected with the fixing grooves 621. The rotating connection mode is used to increase the connection strength of the rotating connection. One end of the supporting rod 63 is rotationally connected with the top of the fixing plate 61. The top of the blocking plate 62 is provided with a recess 622 in which the other end of the supporting rod 63 is arranged. The depth of the recess 622 gradually decreases from top to bottom. The supporting rod 63 is arranged to slide in the recess 622 to adjust the angle between the blocking plate 62 and the fixing plate 61. In order to realize the adaptive adjustment of the structure, the supporting rod 63 has two supporting rods 63. The two supporting rods 63 are provided with a stepping plate 64. During daily use, the fitting of the longitudinal plate 12 and the side wall of the foundation pit can be reinforced by stepping on the stepping plate 64.

[0030] In another aspect, the application provides a construction method of a housing foundation pit supporting structure. Based on the housing foundation pit supporting structure described above, the method comprises the following steps: S1: The distance between the bottom of the bending piece and the foundation pit is determined according to the length of the transverse plate 11. Then the bending piece in the flat state is inclined against the bottom of the foundation pit. At this time, the fulcrum assembly 4 is partially inserted into the bottom of the foundation pit.

[0031] S2: The longitudinal plate 12 is swung to make the connecting strip two 121 inserted into the bottom of the foundation pit along the side wall of the foundation pit. At this time, the longitudinal plate 12 and the transverse plate 11 are close to the side wall and the bottom surface of the foundation pit. Then the fixing pile 2 is inserted into the transverse plate 11 to be fixed once.

[0032] S3: The abutting assembly 3 is inserted into the gap between the adjacent connecting strip one 111 until the one end of the inclined plate 31 abuts against the longitudinal plate 12 and the other end abuts against the fixing pile 2. The secondary fixing of the longitudinal plate 12 and the transverse plate 11 is realized.

[0033] S4: The blocking plate 62 is in contact with the top of the longitudinal plate 12 to determine the position of the fixing plate 61. Another fixing pile 2 is arranged to fix the fixing plate 61 around the foundation pit. Then the supporting rod 63 is swung to slide in the recess 622 to adjust the included angle between the blocking plate 62 and the fixing plate 61 until the supporting rod 63 cannot be further swung.

[0034] S5: After use, the supporting structure needs to be removed. After all the fixing piles 2 are removed, the driving roller 44 is driven to rotate to loosen the soil on the other side of the transverse plate 11. Then the abutting assembly 3 is removed and the longitudinal plate 12 is pulled out.

[0035] It is to be understood that the embodiments disclosed herein are not limited to particular treatments or materials disclosed herein but are amenable to equivalents of such features covered by the scope of the embodiments, with general knowledge in the art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0036] Reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

[0037] Furthermore, the described features or characteristics can be combined in any other suitable manner in one or more embodiments. In the above description, some specific details are provided for a thorough understanding of embodiments of the application. However, one skilled in the relevant art will understand that the application can be practiced without one or more of the specific details, or with other methods, components, materials, etc.

Claims

1. A foundation pit support structure for building construction, characterized in that, The device includes a bending assembly, a fixing pile, and an abutment assembly. The bending assembly includes a transverse plate and a longitudinal plate. A plurality of connecting strips I are equidistantly arranged on one side of the transverse plate, and a plurality of connecting strips II are equidistantly arranged on one side of the longitudinal plate. The end of the connecting strip I away from the transverse plate is rotatably connected to the end of the connecting strip II near the longitudinal plate. In use, the fixing pile passes through the transverse plate and fixes it to the bottom of the pit. The abutment assembly includes an inclined plate and a trapezoidal plate. The inclined edges of a plurality of trapezoidal plates are connected to the inclined plate in parallel. When the longitudinal plate swings around the transverse plate, the trapezoidal plate is vertically inserted into the gap between adjacent connecting strips I along the direction of its parallel plane until one side of the inclined plate abuts against the side wall of the fixing pile. The other side of the horizontal plate is provided with a support assembly, which includes a U-shaped component. Several of the U-shaped components are arranged in parallel with their openings facing the horizontal plate and one end of each component is fixedly connected to the other side of the horizontal plate.

2. The foundation pit support structure for building construction according to claim 1, characterized in that, The fulcrum assembly also includes a movable plate one and a movable plate two. One side of the movable plate one is rotatably connected to the bottom of the horizontal plate, the other side of the movable plate one is rotatably connected to one side of the movable plate two, and the other side of the movable plate two is rotatably connected to the other end of the opening of the U-shaped piece.

3. The foundation pit support structure for building construction according to claim 2, characterized in that, The other side of the movable plate 2 is parallel to several connecting strips 3. The other end of the U-shaped component is rotatably connected to the connecting strips 3. When the angle between the movable plate 2 and the U-shaped component is less than 180°, the other end of the U-shaped component can be movably inserted into the bottom of the foundation.

4. The foundation pit support structure for building construction according to claim 3, characterized in that, A roller is coaxially mounted at the rotatable connection between movable plate one and movable plate two. Several lifting plates are circumferentially mounted on the roller along the axial direction. The fulcrum assembly also includes a loosening component, which includes a lever, a movable rod, and a spring sleeve. Several movable rods are equidistantly arranged on one side of the lever, and at least two spring sleeves are respectively fitted onto different movable rods. The side wall of the spring sleeve is fixedly connected to movable plate two. The spring sleeve provides a pre-tightening force to the lever near the lifting plate through the movable rod, driving the roller to rotate so that the lifting plate moves the lever at fixed intervals.

5. The foundation pit support structure for building construction according to claim 4, characterized in that, The horizontal plate is fitted with a transition block that is wider on both sides and narrower in the middle. The fixing pile passes through the transition block and is inserted into the bottom of the foundation pit.

6. The foundation pit support structure for building construction according to claim 5, characterized in that, The inclined plate has a slot corresponding to the fixed pile on the side closest to the fixed pile.

7. The foundation pit support structure for building construction according to claim 6, characterized in that, It also includes an auxiliary fixing component, which includes a fixing plate, a barrier plate, and a support rod. Another fixing pile fixes the fixing plate to the ground around the pit. The barrier plate is provided with several fixing grooves. One side of the fixing plate is provided with several rotating shafts that can be inserted into the fixing grooves. The rotating shafts are rotatably connected to the fixing grooves. One end of the support rod is rotatably connected to the top of the fixing plate. The top of the barrier plate is provided with a groove for placing the other end of the support rod. The depth of the groove gradually decreases from top to bottom.

8. The foundation pit support structure for building construction according to claim 7, characterized in that, The support has two struts, with a footboard between them.

9. A construction method for a building foundation pit support structure, based on the building foundation pit support structure described in claim 8, characterized in that, Specifically, the following steps are included: S1: Determine the distance between the bottom of the bent part and the pit based on the length of the horizontal plate, and then lean the bent part in the flattened state against the bottom of the pit. At this time, the fulcrum assembly is inserted into the bottom of the pit. S2: Swing the longitudinal plate so that the connecting strip two is inserted into the bottom of the pit along the side wall of the pit. At this time, the longitudinal plate and the transverse plate are close to the side wall and bottom of the pit. Then, the fixing pile is inserted into the transverse plate for one fixation. S3: Insert the abutment component into the gap between adjacent connecting strips until one end of the inclined plate abuts against the longitudinal plate and the other end abuts against the fixed pile; S4: Make the barrier plate contact the top of the longitudinal plate to determine the position of the fixed plate. Then, fix the fixed plate around the pit with another fixed pile. Then, swing the strut to slide it in the groove to adjust the angle between the barrier plate and the fixed plate until the strut can no longer swing.

Images