Double-row PLC construction method combined steel pipe pile top supporting structure

Abstract

The utility model discloses a double-row PLC (programmable logic controller) construction method combined steel pipe pile top supporting structure which comprises a front-row pile and a rear-row pile which are respectively composed of a front steel pipe pile and a rear steel pipe pile, waist beams are respectively distributed on the front side of the front-row pile and the rear side of the rear-row pile, and the waist beams are positioned at the upper parts of the corresponding front steel pipe pile and the rear steel pipe pile; a plurality of supporting units are installed between the two waist beams at intervals, and the corresponding front steel pipe piles and the corresponding rear steel pipe piles are limited and fixed to the inner sides through the single supporting unit. The front-row piles and the rear-row piles form double-row piles, so that the applicable soil layer and the excavation depth are effectively increased; through the arrangement of the multiple sets of supporting units, the steel pipe piles in the double-row piles are subjected to node fastening, the node strength is effectively improved and guaranteed, the bending resistance, deformation resistance and stability of the whole structure are improved and guaranteed, the construction period is effectively shortened, and the engineering cost is helped to be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a top support structure for a double-row PLC method combined steel pipe pile. Background Technique

[0002] The PLC method pile is a new type of support pile technology, which is a continuous wall formed by connecting the Larssen pile and the steel pipe through a lock. It can be used for retaining soil, and also for water stop and water interception. It is a pile type with dual functions and is suitable for cofferdams and foundation pit projects in sandy soil layers within a depth of 16 meters.

[0003] In foundation pit projects under conditions such as poor soil quality and deep excavation depth, due to the limited flexural stiffness of the method pile, its displacement and flexural capacity cannot meet the design requirements, which to a certain extent limits its application in foundation pit projects.

[0004] In the prior art, the form of reinforced concrete pouring is usually adopted to pour structures such as capping beams and connecting beams on the upper part of the method pile to form a concrete layer, so as to improve and ensure the overall flexural stiffness and ensure the overall structural strength. The existing measures of using reinforced concrete pouring have a slow overall construction speed, are not conducive to ensuring the overall construction period, and also require frequent maintenance in the later stage. Content of the Utility Model

[0005] To solve the above problems, the present application provides a top support structure for a double-row PLC method combined steel pipe pile with a reasonable structure, thereby effectively improving and ensuring the joint strength, improving and ensuring the flexural resistance, anti-deformation and stability of the overall structure, effectively saving the construction period, and helping to save the project cost.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A top support structure for a double-row PLC method combined steel pipe pile includes a front row of piles and a rear row of piles respectively composed of front steel pipe piles and rear steel pipe piles. Waist beams are respectively arranged on the front side of the front row of piles and the rear side of the rear row of piles, and the waist beams are located on the upper parts of the corresponding front steel pipe piles and rear steel pipe piles; multiple groups of support units are installed at intervals between the two waist beams, and a single group of support units respectively limit and fix the corresponding front steel pipe piles and rear steel pipe piles to the inside.

[0008] As a further improvement of the above technical solution:

[0009] A single group of support units includes connecting beams arranged in parallel on the left and right sides of the front steel pipe pile and the rear steel pipe pile, and the ends of the connecting beams are tightly fixed to the waist beams; spaced connecting beams are commonly installed between the two connecting beams, and the frame space surrounding the circumferential outside of the front steel pipe pile or the rear steel pipe pile is jointly formed by the connecting beams, the waist beams and the left and right connecting beams.

[0010] The frame space has a rectangular structure, and the distance between two coupling beams is greater than the distance between the tie beam and the waist beam; the opposite sides of the tie beam and the waist beam are fixed to the outer wall surfaces of the corresponding front steel pipe piles or rear steel pipe piles.

[0011] Symmetrically installed fastening plates are provided in the middle of the opposite sides of the tie beam and the waist beam, and the fastening plates are attached to the outer wall surfaces of the front steel pipe piles or rear steel pipe piles through concave arc structures.

[0012] The coupling beams are arranged perpendicular to the waist beam, and the tie beams are arranged perpendicular to the coupling beams.

[0013] Reinforcing plates are installed on the left and right side surfaces at the ends of the coupling beams, and the reinforcing plates are inserted into the slots opened in the waist beam from top to bottom.

[0014] Both the coupling beams and the tie beams are made of H-shaped steel. The two ends of the tie beam are welded to the coupling beams to form a support unit with a symmetric frame structure. The support unit and the waist beam are in the same horizontal plane.

[0015] In the support unit, the vertical cross-sections of the coupling beams and the tie beams are both arranged in an "I" shape, the waist beam is made of H-shaped steel, and the vertical cross-section of the waist beam is arranged in an "H" shape.

[0016] Steel sheet piles are connected between adjacent front steel pipe piles to form a combined steel pipe pile of the PLC method; the number of the front steel pipe piles is more than that of the rear steel pipe piles, and the front steel pipe piles in the front row are arranged at intervals with the corresponding rear steel pipe piles and support units.

[0017] A triangular support plate is installed between the side surface of the front steel pipe pile and the bottom surface of the waist beam.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model forms a double-row pile through the front row of piles and the rear row of piles, effectively increasing the applicable soil layers and excavation depth, and is applicable to foundation pit engineering; through the setting of multiple groups of support units, the steel pipe piles in the double-row pile are fastened at the joints, effectively improving and ensuring the joint strength, enhancing and ensuring the bending resistance, anti-deformation and stability of the overall structure, and effectively saving the construction period and helping to save the project cost;

[0020] The utility model also has the following advantages:

[0021] A stable truss structure is formed by the front and rear waist beams in combination with each support unit at the upper parts of the front row of piles and the rear row of piles, effectively improving and ensuring the support capacity, and is especially applicable to foundation pit engineering with poor soil conditions and deep excavation depth.

[0022] Through the setting of the fastening plates, the structural limit and structural stability of the steel pipe piles relative to the support unit are effectively ensured, and the support capacity of the support unit for the steel pipe piles is effectively ensured.

[0023] The support unit composed of coupling beams and tie beams can be an independent welding unit. During construction, the stiffening plates at the ends of the coupling beams are inserted into the corresponding slots of the waist beam, realizing the rapid installation of the support unit relative to the waist beam and effectively ensuring the stable position and reliability of the support unit on the waist beam. Brief Description of the Drawings

[0024] Figure 1 It is an elevation schematic diagram of the present utility model.

[0025] Figure 2 It is Figure 1 the sectional schematic diagram along the A-A direction in

[0026] Figure 3 It is a plan schematic diagram of the present utility model.

[0027] Figure 4 It is Figure 3 the sectional schematic diagram along the B-B direction in

[0028] Figure 5 It is the fitting schematic diagram of the stiffening plate on the coupling beam and the waist beam of the present utility model.

[0029] Wherein: 1. Rear steel pipe pile; 2. Front steel pipe pile; 3. Steel sheet pile; 4. Triangular support plate; 5. Waist beam; 6. Tie beam; 7. Coupling beam; 8. Stiffening plate; 9. Fastening plate; 51. Slot; 71. Through slot. Detailed Embodiment

[0030] The following combines the drawings to illustrate the detailed embodiment of the present utility model.

[0031] As Figure 1 , Figure 2 and Figure 3 shown, a double-row PLC method combined steel pipe pile top support structure in this embodiment includes a front row of piles and a rear row of piles respectively composed of front steel pipe piles 2 and rear steel pipe piles 1. Waist beams 5 are arranged on the front side of the front row of piles and the rear side of the rear row of piles, and the waist beams 5 are located on the upper parts of the corresponding front steel pipe piles 2 and rear steel pipe piles 1; multiple groups of support units are installed at intervals between the two waist beams 5, and a single group of support units respectively limit and fix the corresponding front steel pipe piles 2 and rear steel pipe piles 1 inside.

[0032] In this embodiment, a double-row pile is formed by the front row of piles and the rear row of piles, effectively increasing the applicable soil layer and excavation depth, and being applicable to foundation pit engineering; through the setting of multiple groups of support units, the steel pipe piles in the double-row piles are node-fastened, effectively improving and ensuring the node strength.

[0033] In this embodiment, the front and rear waist beams 5, combined with each support unit, form a stable truss structure on the upper parts of the front row of piles and the rear row of piles, effectively improving and ensuring the support capacity, and being particularly applicable to foundation pit engineering with poor soil conditions and deep excavation depths.

[0034] The single - group support unit includes connecting beams 7 arranged in parallel on the left and right sides of the front steel pipe pile 2 and the rear steel pipe pile 1. The end of the connecting beam 7 is tightly fixed to the waist beam 5. Between the two connecting beams 7, tie beams 6 are installed at intervals. The tie beam 6, the waist beam 5 and the left and right connecting beams 7 together form a frame space surrounding the circumferential outer part of the front steel pipe pile 2 or the rear steel pipe pile 1, effectively ensuring the structural support for the steel pipe piles in the double - row piles.

[0035] The frame space is of a rectangular structure. The distance between the two connecting beams 7 is greater than the distance between the tie beam 6 and the waist beam 5. The opposite side surfaces of the tie beam 6 and the waist beam 5 are fixed to the outer wall surface of the corresponding front steel pipe pile 2 or rear steel pipe pile 1, effectively ensuring the support and fixation of the steel pipe pile in the front - to - back direction.

[0036] Symmetrically installed on the middle part of the opposite side surfaces of the tie beam 6 and the waist beam 5 are fastening plates 9. The fastening plates 9 are attached to the outer wall surface of the front steel pipe pile 2 or the rear steel pipe pile 1 through a concave arc structure.

[0037] In this embodiment, through the setting of the fastening plates 9, the structural limit and structural stability of the steel pipe pile relative to the support unit are effectively ensured, and the support capacity of the support unit for the steel pipe pile is effectively guaranteed.

[0038] The connecting beam 7 is arranged perpendicular to the waist beam 5, and the tie beam 6 is arranged perpendicular to the connecting beam 7, effectively ensuring the support performance of the support unit and guaranteeing the structural reliability and stability.

[0039] As Figure 4 shown, on the left and right side surfaces of the end of the connecting beam 7, strengthening plates 8 are installed. The strengthening plates 8 are inserted into the slots 51 opened in the waist beam 5 from top to bottom. As Figure 5 shown, the quick positioning and installation of the support unit relative to the waist beam 5 are realized.

[0040] Both the connecting beam 7 and the tie beam 6 are made of H - shaped steel. The two ends of the tie beam 6 are welded to the connecting beam 7 to form a support unit with a symmetric frame - type structure. The support unit and the waist beam 5 are in the same horizontal plane.

[0041] In this embodiment, the support unit composed of the connecting beam 7 and the tie beam 6 can be an independent welded unit. During construction, the strengthening plates 8 at the end of the connecting beam 7 are inserted into the corresponding slots 51 of the waist beam 5, realizing the quick installation of the support unit relative to the waist beam 5 and effectively ensuring the position stability and reliability of the support unit on the waist beam 5.

[0042] In this embodiment, the waist beam 5 and the support unit are mainly arranged at the top position of the double - row piles, forming a support structure at the top of the double - row piles.

[0043] In the support unit, the continuous beams 7 and the tie beams 6 are arranged in a "work" - shaped vertical section, and the waist beam 5 is made of H - shaped steel, and the vertical section of the waist beam 5 is arranged in an "H" - shaped layout.

[0044] During actual construction, a through - slot 71 can be opened at the end of the continuous beam 7, and a reinforcing plate 8 is installed in a limited - position manner through the through - slot 71; the reinforcing plate 8 is fixed to the end of the continuous beam 7 by fastening methods such as welding or screwing. Then, when the support unit is installed on the waist beam 5, the end of the reinforcing plate 8 protruding from the continuous beam 7 is installed in the slot 51 of the waist beam 5 to achieve the rapid installation of the support unit on the waist beam 5.

[0045] Steel sheet piles 3 are connected between adjacent front steel pipe piles 2 to form a combined steel pipe pile of the PLC method; the number of front steel pipe piles 2 is more than that of the rear steel pipe piles 1, and the front steel pipe piles 2 in the front row are arranged at intervals with corresponding rear steel pipe piles 1 and support units.

[0046] In this embodiment, according to actual requirements, one, two or more steel sheet piles 3 can be installed and connected in a front - back and positive - negative socket - and - insert form between adjacent front steel pipe piles 2 to form a combined steel pipe pile of the PLC method with a certain arrangement rule. The steel sheet pile 3 is a plate - like structure, and the cross - section of the steel sheet pile 3 is concave or inverted - concave, and the steel sheet pile 3 can stop water and silt.

[0047] In this embodiment, the steel sheet pile 3 is not flush with the front steel pipe pile 2, and the top and bottom of the front steel pipe pile 2 both extend and protrude beyond the height of the steel sheet pile 3. The support unit is installed on the front steel pipe pile 2 above the top of the steel sheet pile 3, and the front steel pipe pile 2 below the bottom of the steel sheet pile 3 is inserted into the ground.

[0048] A triangular support plate 4 is installed between the side of the front steel pipe pile 2 and the bottom surface of the waist beam 5.

[0049] In this embodiment, the front steel pipe piles 2 are arranged inside the foundation pit. Through the setting of the triangular support plate 4, the structural connection strength between the front steel pipe piles 2 and the waist beam 5 is effectively improved and guaranteed.

[0050] In this embodiment, the triangular support plate 4 can be installed between the front steel pipe pile 2 and the waist beam 5 in a welded form.

[0051] The usage method of the present utility model is as follows:

[0052] The front steel pipe piles 2 are successively driven into the foundation pit to form the front row of piles, and the steel sheet piles 3 are installed between adjacent front steel pipe piles 2; the rear steel pipe piles 1 are successively driven into the ground to form the rear row of piles; the waist beam 5 is installed on the sides of the front row of piles and the rear row of piles, and then the support units pre - welded into one body are installed between the waist beams 5 to complete the layout of the pile - top support structure.

[0053] The utility model can replace the existing concrete pouring, play a role in supporting the pile top, effectively improve and ensure the joint strength, improve and guarantee the bending resistance, deformation resistance and stability of the overall structure, effectively save the construction period, and help to save the project cost.

[0054] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0055] The above description is an interpretation of the utility model, not a limitation thereof. For the scope defined by the utility model, refer to the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A top support structure for a double-row PLC construction method combined steel pipe pile, comprising a front row of piles and a rear row of piles respectively composed of front steel pipe piles (2) and rear steel pipe piles (1), characterized in that: On the front side of the front row of piles and the rear side of the rear row of piles, a waist beam (5) is respectively arranged, and the waist beam (5) is located above the corresponding front steel pipe piles (2) and rear steel pipe piles (1); multiple groups of support units are installed at intervals between the two waist beams (5), and a single group of support units respectively limit and fix the corresponding front steel pipe piles (2) and rear steel pipe piles (1) to the inside.

2. The top support structure of the double-row PLC method combined steel pipe pile according to claim 1, characterized in that: A single group of support units includes connecting beams (7) arranged in parallel on the left and right sides of the front steel pipe piles (2) and rear steel pipe piles (1), and the ends of the connecting beams (7) are tightly fixed to the waist beam (5); a series of beams (6) arranged at intervals are commonly installed between the two connecting beams (7), and the series of beams (6), the waist beam (5), and the left and right connecting beams (7) together form a frame space surrounding the circumferential outside of the front steel pipe piles (2) or the rear steel pipe piles (1).

3. The top support structure of a double-row PLC method combined steel pipe pile as described in claim 2, characterized in that: The frame space is of a rectangular structure, and the distance between the two connecting beams (7) is greater than the distance between the series of beams (6) and the waist beam (5); the opposite side surfaces of the series of beams (6) and the waist beam (5) are fixed to the outer wall surfaces of the corresponding front steel pipe piles (2) or rear steel pipe piles (1).

4. The top support structure of a double-row PLC method combined steel pipe pile according to claim 3, characterized in that: Fastening plates (9) are symmetrically installed in the middle of the opposite side surfaces of the series of beams (6) and the waist beam (5), and the fastening plates (9) are attached to the outer wall surfaces of the front steel pipe piles (2) or rear steel pipe piles (1) through a concave arc structure.

5. The top support structure of a double-row PLC construction method combined steel pipe pile as claimed in claim 2, characterized in that: The connecting beams (7) are arranged perpendicular to the waist beam (5), and the series of beams (6) are arranged perpendicular to the connecting beams (7).

6. The top support structure of the double-row PLC construction method combined steel pipe piles as claimed in claim 2, wherein: Reinforcing plates (8) are installed on the left and right side surfaces at the ends of the connecting beams (7), and the reinforcing plates (8) are inserted into the slots (51) opened in the waist beam (5) from top to bottom.

7. The top support structure of a double-row PLC construction method combined steel pipe pile according to claim 2, characterized in that: Both the connecting beams (7) and the series of beams (6) are made of H-shaped steel, and the two ends of the series of beams (6) are welded to the connecting beams (7) to form a support unit of a symmetric frame type structure, and the support unit and the waist beam (5) are in the same horizontal plane.

8. The top support structure of the double-row PLC method combined steel pipe pile according to claim 2, characterized in that: In the support unit, the vertical sections of the connecting beams (7) and the series of beams (6) are both arranged in an "I" shape, the waist beam (5) is made of H-shaped steel, and the vertical section of the waist beam (5) is arranged in an "H" shape.

9. The double-row PLC construction method combined steel pipe pile top support structure according to claim 1, characterized in that: Steel sheet piles (3) are connected between adjacent front steel pipe piles (2) to form a combined steel pipe pile of the PLC method; the number of the front steel pipe piles (2) is more than that of the rear steel pipe piles (1), and the corresponding rear steel pipe piles (1) and support units are arranged at intervals among the front steel pipe piles (2) in the front row of piles.

10. A double-row PLC construction method combined steel pipe pile top support structure according to claim 1, characterized in that: A triangular support plate (4) is installed between the side surface of the front steel pipe pile (2) and the bottom surface of the waist beam (5).

Images