Internal and external supporting structure of building foundation pit

Abstract

The utility model relates to a building foundation pit internal and external supporting structure, and belongs to the technical field of building foundation pit construction. A plurality of sets of frame supporting mechanisms for providing supporting force for the first waist beam and the second waist beam are arranged in the length direction of the first waist beam and the second waist beam at intervals, and each frame supporting mechanism comprises a first peripheral pile body and a second peripheral pile body which are located on the outer side of the first steel sheet pile and the outer side of the second steel sheet pile respectively. A top cross beam is connected between the top of the first peripheral pile body and the top of the second peripheral pile body, a vertical stand column A for fixing the first waist beam and a vertical stand column B for fixing the second waist beam are arranged on the top cross beam, and a lower layer supporting rod is arranged between the vertical stand column A and the vertical stand column B. The supporting structure has the advantages that the lower-layer supporting rods, the vertical stand columns A and the vertical stand columns B are combined to support the first steel sheet pile and the second steel sheet pile, and the supporting effect on the first steel sheet pile and the second steel sheet pile can be improved.

Description

Technical Field

[0001] The utility model relates to an internal and external supporting structure of a building foundation pit, belonging to the technical field of building foundation pit construction. Background Art

[0002] Steel sheet piles are a type of plate-supported structure that has both soil retaining and water-isolating functions. They are easy to operate and quick to construct, and are suitable for situations where the construction site is narrow and the ground conditions are poor.

[0003] After searching, the patent number CN201521143740.7 discloses a steel sheet pile support device. The steel sheet piles of the steel sheet pile support device are symmetrically provided with a pair of column I-beams every 5 meters, and a support pipe is fixed between each two symmetrical column I-beams by bolts, forming a gate-type structure. The support device has strong water-tightness, which can reduce the impact of groundwater on the excavation project. Through the water-retaining effect of the support structure, the water seepage of the foundation trench can be effectively controlled, the water head difference can be reduced, and the risk of "quicksand" can be eliminated.

[0004] Although the above patent can realize the support function of steel sheet piles, the current technical considerations are not comprehensive and have the following disadvantages: on the one hand, the large root of the horizontal support pipe is in the form of a single root, and the supporting strength is poor; on the other hand, the horizontal support pipe is directly connected to the cross brace, the stress at the connection is large, and it is easy to be damaged.

[0005] In order to solve one of the above problems, a kind of internal and external supporting structure of building foundation pit is urgently needed. Utility Model Content

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to use the lower support rods, plus vertical columns A and vertical columns B to jointly support the first steel sheet piles and the second steel sheet piles, and to provide an internal and external support structure for a building foundation pit.

[0007] The internal and external supporting structure of the construction foundation pit described in the utility model comprises a first steel sheet pile and a second steel sheet pile arranged relatively to each other, and a first waist beam and a second waist beam are installed horizontally on the inner sides of the first steel sheet pile and the second steel sheet pile respectively, and is characterized in that: a plurality of groups of frame supporting mechanisms providing supporting force for the first waist beam and the second waist beam are arranged at intervals along the length direction of the first waist beam and the second waist beam, and the frame supporting mechanism comprises a first outer pile body and a second outer pile body respectively located on the outer sides of the first steel sheet pile and the second steel sheet pile, and a top cross beam is connected between the tops of the first outer pile body and the second outer pile body, and a vertical column A for fixing the first waist beam and a vertical column B for fixing the second waist beam are arranged on the top cross beam, and a lower support rod is arranged between the vertical column A and the vertical column B.

[0008] The lower support rods, vertical columns A and B are used to jointly support the first steel sheet piles and the second steel sheet piles, and the two ends of the top crossbeam are fixed with the first outer pile body and the second outer pile body, which can improve the support effect of the first steel sheet piles and the second steel sheet piles.

[0009] The problem of poor supporting force of a single lower support rod is solved, and the failure of the support of the lower support rod to the first steel sheet pile and the second steel sheet pile is avoided to a certain extent, which is beneficial to construction.

[0010] Preferably, the positions of the vertical columns A and B are adjustable along the length direction of the top cross beam.

[0011] Preferably, the vertical column A includes a left sliding sleeve which is sleeved on the top cross beam and can slide along the length direction of the top cross beam, an upper column A and a lower column A are respectively arranged on the upper and lower sides of the left sliding sleeve, an upper support plate A is arranged on one side of the upper column A, and a middle support plate A and a lower support plate A are respectively arranged on both sides of the lower column A, and the middle support plate A and the middle support plate B respectively support the first waist beam and the second waist beam.

[0012] The position of the vertical column A can be adjusted along the length of the top beam to match foundation pits of different widths.

[0013] Preferably, the vertical column B includes a right sliding sleeve which is sleeved on the top cross beam and can slide along the length direction of the top cross beam, an upper column B and a lower column B are respectively arranged on the upper and lower sides of the right sliding sleeve, an upper support plate B is arranged on one side of the upper column B, and a middle support plate B and a lower support plate B are respectively arranged on both sides of the lower column B.

[0014] The position of the vertical column B can be adjusted along the length of the top beam to match foundation pits of different widths.

[0015] Preferably, a middle connecting seat is provided in the middle part of the top crossbeam, and a left support plate and a right support plate are respectively provided on both sides of the middle connecting seat; a left upper support rod is abutted between the upper column A and the middle connecting seat, and the two ends of the left upper support rod are respectively supported on the upper support plate A and the left support plate; a right upper support rod is abutted between the upper column B and the middle connecting seat, and the two ends of the right upper support rod are respectively supported on the upper support plate B and the right support plate; a lower support rod is abutted between the vertical column A and the vertical column B, and the two ends of the lower support rod are respectively supported on the lower support plate A and the lower support plate B.

[0016] The lower support rod, the left upper support rod and the right upper support rod jointly support the vertical column A and the vertical column B, which can improve the supporting effect of the first steel sheet pile and the second steel sheet pile.

[0017] Preferably, the first peripheral pile body and the second peripheral pile body are both steel pipe piles.

[0018] Preferably, the top cross beam is an I-beam, which is welded to the first outer pile body and the second outer pile body.

[0019] Preferably, multiple groups of steel sheet piles are arranged side by side to form a steel sheet pile cofferdam structure.

[0020] Preferably, the left upper support rod, the right upper support rod and the lower support rod are all round tubes.

[0021] Preferably, the upper column A, the upper column A and the lower column A are all square tubes and are welded as one piece.

[0022] Preferably, the two ends of the left upper support rod can also be welded to the vertical column A and the middle connecting seat, the two ends of the right upper support rod can be welded to the middle connecting seat and the vertical column B, and the two ends of the lower support rod can be welded to the vertical column A and the vertical column B to ensure stability.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The internal and external supporting structure of the building foundation pit described in the utility model adopts a lower support rod, and vertical columns A and vertical columns B are jointly used to support the first steel sheet piles and the second steel sheet piles, and the two ends of the top cross beam are fixed with a first outer pile body and a second outer pile body, which can improve the supporting effect of the first steel sheet piles and the second steel sheet piles.

[0025] The internal and external support structure of the building foundation pit described in the utility model solves the problem of poor supporting force of a single lower support rod, and to a certain extent avoids the failure of the lower support rod in supporting the first steel sheet pile and the second steel sheet pile, which is beneficial to construction.

[0026] The positions of the vertical columns A and B of the internal and external supporting structures of the building foundation pit described in the utility model can be adjusted along the length direction of the top crossbeam to match foundation pits of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 It is a partial structural schematic diagram of the utility model;

[0030] Figure 3This is the structural diagram of vertical column B.

[0031] In the figure: 1, first steel sheet pile 2, second steel sheet pile 3, first waist beam 4, second waist beam 5, first peripheral pile body 6, second peripheral pile body 7, top cross beam 8, vertical column A 8.1, upper column A 8.2, left sliding sleeve 8.3, lower column A8.4, upper support plate A 8.5, middle support plate A 8.6, lower support plate A 9, vertical column B 9.1, upper column B 9.2, right sliding sleeve 9.3, lower column B 9.4, upper support plate B 9.5, middle support plate B 9.6, lower support plate B 10, middle connecting seat 10.1, left support plate 10.2, right support plate 11, left upper support rod 12, right upper support rod 13, lower support rod 14, foundation pit 14. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings: The utility model is further illustrated below through specific embodiments, but is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the protection scope of the utility model.

[0033] Embodiment 1, as Figure 1-2 As shown, the internal and external support structure of a construction foundation pit comprises a first steel sheet pile 1 and a second steel sheet pile 2 arranged opposite to each other, and the inner sides of the first steel sheet pile 1 and the second steel sheet pile 2 are respectively installed with a first waist beam 3 and a second waist beam 4 arranged horizontally, and a plurality of frame support mechanisms for providing support force for the first waist beam 3 and the second waist beam 4 are arranged at intervals along the length direction of the first waist beam 3 and the second waist beam 4, and the frame support mechanism comprises a first outer pile body 5 and a second outer pile body 6 which are respectively located on the outer sides of the first steel sheet pile 1 and the second steel sheet pile 2, and a top cross beam 7 is connected between the tops of the first outer pile body 5 and the second outer pile body 6, and a vertical column A8 for fixing the first waist beam 3 and a vertical column B9 for fixing the second waist beam 4 are arranged on the top cross beam 7, and a lower support rod 13 is arranged between the vertical column A8 and the vertical column B9.

[0034] The lower support rod 13, vertical columns A8 and vertical columns B9 are used to jointly support the first steel sheet pile 1 and the second steel sheet pile 2, and the two ends of the top cross beam 7 are fixed with the first outer pile body 5 and the second outer pile body 6, which can improve the support effect of the first steel sheet pile 1 and the second steel sheet pile 2.

[0035] The problem of poor supporting force of a single lower support rod 13 is solved, and failure of the support of the lower support rod 13 to the first steel sheet pile 1 and the second steel sheet pile 2 is avoided, which is beneficial to construction.

[0036] Embodiment 2, as Figure 1-2As shown, the internal and external support structure of a construction foundation pit comprises a first steel sheet pile 1 and a second steel sheet pile 2 arranged opposite to each other, and the inner sides of the first steel sheet pile 1 and the second steel sheet pile 2 are respectively installed with a first waist beam 3 and a second waist beam 4 arranged horizontally, and a plurality of frame support mechanisms for providing support force for the first waist beam 3 and the second waist beam 4 are arranged at intervals along the length direction of the first waist beam 3 and the second waist beam 4, and the frame support mechanism comprises a first outer pile body 5 and a second outer pile body 6 which are respectively located on the outer sides of the first steel sheet pile 1 and the second steel sheet pile 2, and a top cross beam 7 is connected between the tops of the first outer pile body 5 and the second outer pile body 6, and a vertical column A8 for fixing the first waist beam 3 and a vertical column B9 for fixing the second waist beam 4 are arranged on the top cross beam 7, and a lower support rod 13 is arranged between the vertical column A8 and the vertical column B9.

[0037] Furthermore, the positions of the vertical columns A8 and B9 are adjustable along the length direction of the top cross beam 7 .

[0038] Furthermore, the vertical column A8 includes a vertical column A8 including a left-side sliding sleeve 8.2 which is sleeved on the top cross beam 7 and can slide along the length direction of the top cross beam 7, an upper column A8.1 and a lower column A8.3 are respectively arranged on the upper and lower sides of the left-side sliding sleeve 8.2, an upper support plate A8.4 is arranged on one side of the upper column A8.1, and a middle support plate A8.5 and a lower support plate A8.6 are respectively arranged on both sides of the lower column A8.3, and the middle support plate A8.5 and the middle support plate B9.5 respectively support the first waist beam 3 and the second waist beam 4.

[0039] The position of the vertical column A8 can be adjusted along the length direction of the top crossbeam 7 to match foundation pits 14 of different widths.

[0040] Further, refer to Figure 3 The vertical column B9 includes a right sliding sleeve 9.2 which is sleeved on the top cross beam 7 and can slide along the length direction of the top cross beam 7. An upper column B9.1 and a lower column B9.3 are respectively arranged on the upper and lower sides of the right sliding sleeve 9.2. An upper support plate B9.4 is arranged on one side of the upper column B9.1, and a middle support plate B9.5 and a lower support plate B9.6 are respectively arranged on both sides of the lower column B9.3.

[0041] The position of the vertical column B9 can be adjusted along the length direction of the top crossbeam 7 to match foundation pits 14 of different widths.

[0042] Furthermore, a middle connecting seat 10 is provided in the middle part of the top crossbeam 7, and a left support plate 10.1 and a right support plate 10.2 are respectively provided on both sides of the middle connecting seat 10; a left upper support rod 11 is abutted between the upper column A8.1 and the middle connecting seat 10, and the two ends of the left upper support rod 11 are respectively supported on the upper support plate A8.4 and the left support plate 10.1; a right upper support rod 12 is abutted between the upper column B9.1 and the middle connecting seat 10, and the two ends of the right upper support rod 12 are respectively supported on the upper support plate B9.4 and the right support plate 10.2; a lower support rod 13 is abutted between the vertical column A8 and the vertical column B9, and the two ends of the lower support rod 13 are respectively supported on the lower support plate A8.6 and the lower support plate B9.6.

[0043] The lower support rod 13 , the left upper support rod 11 and the right upper support rod 12 jointly support the vertical column A8 and the vertical column B9 , which can improve the supporting effect of the first steel sheet pile 1 and the second steel sheet pile 2 .

[0044] Furthermore, the first peripheral pile body 5 and the second peripheral pile body 6 are both steel pipe piles.

[0045] Furthermore, the top cross beam 7 is an I-beam, which is welded to the first outer pile body 5 and the second outer pile body 6 .

[0046] Furthermore, a plurality of groups of steel sheet piles are arranged side by side to form a steel sheet pile cofferdam structure.

[0047] Furthermore, the left upper support rod 11, the right upper support rod 12 and the lower support rod 13 are all round tubes.

[0048] Furthermore, the upper column A8.1, the upper column A8.2 and the lower column A8.3 are all square tubes and are welded as one piece.

[0049] Furthermore, the two ends of the left upper support rod 11 can also be welded to the vertical column A8 and the middle connecting seat 10, the two ends of the right upper support rod 12 are welded to the middle connecting seat 10 and the vertical column B9, and the two ends of the lower support rod 13 are welded to the vertical column A8 and the vertical column B9 to ensure stability.

[0050] The internal and external supporting structure of the building foundation pit described in the utility model adopts a lower support rod, and vertical columns A and vertical columns B are jointly used to support the first steel sheet piles and the second steel sheet piles, and the two ends of the top cross beam are fixed with a first outer pile body and a second outer pile body, which can improve the supporting effect of the first steel sheet piles and the second steel sheet piles.

[0051] The internal and external support structure of the building foundation pit described in the utility model solves the problem of poor supporting force of a single lower support rod, and to a certain extent avoids the failure of the lower support rod in supporting the first steel sheet pile and the second steel sheet pile, which is beneficial to construction.

[0052] The positions of the vertical columns A and B of the internal and external supporting structures of the building foundation pit described in the utility model can be adjusted along the length direction of the top crossbeam to match foundation pits of different widths.

[0053] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

[0054] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. An internal and external support structure of a building foundation pit, comprising a first steel sheet pile and a second steel sheet pile arranged opposite to each other, wherein a first waist beam and a second waist beam arranged horizontally are respectively installed on the inner sides of the first steel sheet pile and the second steel sheet pile, characterized in that: A plurality of frame support mechanisms providing support force for the first waist beam and the second waist beam are arranged at intervals along the length direction of the first waist beam and the second waist beam, and the frame support mechanism includes a first outer pile body and a second outer pile body respectively located outside the first steel sheet pile and the second steel sheet pile, and a top cross beam is connected between the tops of the first outer pile body and the second outer pile body, and a vertical column A for fixing the first waist beam and a vertical column B for fixing the second waist beam are arranged on the top cross beam, and a lower support rod is arranged between the vertical column A and the vertical column B.

2. The internal and external support structure of the building foundation pit according to claim 1 is characterized in that: The positions of the vertical columns A and B are adjustable along the length direction of the top cross beam.

3. The internal and external support structure of the building foundation pit according to claim 2 is characterized in that: The vertical column A includes a left sliding sleeve which is sleeved on the top cross beam and can slide along the length direction of the top cross beam. An upper column A and a lower column A are respectively arranged on the upper and lower sides of the left sliding sleeve. An upper support plate A is arranged on one side of the upper column A. A middle support plate A and a lower support plate A are respectively arranged on both sides of the lower column A. The middle support plates A and B support the first waist beam and the second waist beam respectively.

4. The internal and external support structure of the building foundation pit according to claim 3 is characterized in that: The vertical column B includes a right sliding sleeve which is sleeved on the top cross beam and can slide along the length direction of the top cross beam. An upper column B and a lower column B are respectively arranged on the upper and lower sides of the right sliding sleeve. An upper support plate B is arranged on one side of the upper column B, and a middle support plate B and a lower support plate B are respectively arranged on both sides of the lower column B.

5. The internal and external support structure of the building foundation pit according to claim 4 is characterized in that: A middle connecting seat is provided in the middle part of the top crossbeam, and a left support plate and a right support plate are respectively provided on both sides of the middle connecting seat; a left upper support rod is abutted between the upper column A and the middle connecting seat, and the two ends of the left upper support rod are respectively supported on the upper support plate A and the left support plate; a right upper support rod is abutted between the upper column B and the middle connecting seat, and the two ends of the right upper support rod are respectively supported on the upper support plate B and the right support plate; a lower support rod is abutted between the vertical column A and the vertical column B, and the two ends of the lower support rod are respectively supported on the lower support plate A and the lower support plate B.

6. The internal and external support structure of the building foundation pit according to claim 5, characterized in that: The first peripheral pile body and the second peripheral pile body are both steel pipe piles.

7. The internal and external support structure of the building foundation pit according to claim 6 is characterized in that: The top cross beam is an I-beam, which is welded to the first outer pile body and the second outer pile body.

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