Foundation treatment device of cast-in-place box girder bridge

Abstract

The utility model discloses a foundation treatment device of a cast-in-place box girder bridge, and relates to the technical field of bridge foundations. The structure comprises a pipe pile foundation, a compensation supporting seat, a cross beam and a longitudinal beam, the pipe pile foundation comprises a pipe pile; concrete foundations are cast in situ at the upper ends of the pipe piles; the compensation supporting seat is mounted on the concrete foundation seat; a plurality of tubular pile foundations are arranged right below the cast-in-place box girder bridge in a rectangular array; the cross beams are transversely arranged on the compensation supporting seats in the transverse array; and a plurality of longitudinal beams are arranged on the cross beams. According to the utility model, the tubular pile foundation, the compensation supporting seat, the cross beam, the longitudinal beam and other components are ingeniously combined, so that the effective compensation for the foundation settlement and the stable guarantee for the bridge construction quality are realized; the device further has the advantages of being simple in structure, easy to mount and dismount, convenient to adjust and the like, the construction efficiency and quality can be remarkably improved, the construction cost is reduced, and a new solution is provided for construction of the cast-in-place box girder bridge.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge foundations, in particular to a foundation processing device for a cast-in-place box girder bridge. Background Art

[0002] In the field of bridge construction, cast-in-place box girder bridges are a common form of bridges, and their construction quality and stability have an important impact on the overall performance and service life of the bridge. In the construction process of cast-in-place box girder bridges, formwork support is a crucial link, and the stability of the formwork support depends on the treatment of the supporting steel frame array and its supporting foundation below it.

[0003] Traditional methods of supporting foundations for cast-in-place box girder bridges, such as simple pile foundations or expanded foundations, may be able to meet basic needs in areas with good geological conditions. However, in areas with complex geological conditions and significant soil settlement, these traditional treatment methods often expose problems such as insufficient support and poor stability. In particular, improper treatment of the foundation below the supporting steel frame array can easily lead to unstable formwork support, which in turn affects the construction quality and safety of cast-in-place box girder bridges.

[0004] Although some existing foundation treatment devices can compensate for foundation settlement to a certain extent, such as adjusting by hydraulic jacking and inserting support blocks, the adjustment process is cumbersome, requiring a lot of time and manpower, and the stability and support capacity still need to be improved. At the same time, these devices also have many inconveniences during installation and disassembly, affecting construction efficiency.

[0005] Therefore, a new type of foundation treatment device is urgently needed, which should be able to easily adjust the support height to adapt to the changes in foundation settlement; at the same time, the device should also have sufficient stability and support capacity to ensure the construction quality and safety of cast-in-place box girder bridges. In addition, in order to improve construction efficiency, the device should also be easy to install and disassemble, and have good versatility and flexibility.

[0006] Based on the above background, the utility model proposes a foundation treatment device for a cast-in-place box girder bridge. Utility Model Content

[0007] The purpose of the utility model is to provide a foundation treatment device for a cast-in-place box girder bridge, which realizes effective compensation for foundation settlement and stable guarantee of bridge construction quality by adopting a clever combination of components such as pipe pile foundation, compensation support seat, cross beam and longitudinal beam.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model is a foundation processing device for a cast-in-place box girder bridge, comprising a pipe pile foundation, a compensation support seat, a cross beam and a longitudinal beam; the pipe pile foundation comprises a pipe pile; a concrete foundation seat is cast in place on the upper end of the pipe pile; the compensation support seat is installed on the concrete foundation seat; a plurality of the pipe pile foundations are arranged in a rectangular array directly below the cast-in-place box girder bridge; the cross beams are transversely arranged on the compensation support seats in the transverse array; and a plurality of the longitudinal beams are arranged on a plurality of the cross beams.

[0010] As a preferred technical solution of the utility model, the upper ends of the concrete bases of the plurality of pipe pile foundations are located in the same horizontal plane when they are manufactured.

[0011] As a preferred technical solution of the utility model, the compensation support seat includes a guide base, a supporting wedge, an adjusting wedge, a first adjusting stud and a second adjusting stud; the guide base includes a rectangular base plate; two rectangular vertical plates are vertically fixed on the upper surface of the rectangular base plate; the adjusting wedge moves horizontally and linearly between the two rectangular vertical plates; two vertical guide grooves are provided on the rectangular vertical plates; the supporting wedge moves vertically along the four guide grooves; two internal threaded ears are fixed on the guide base, which are respectively threadedly connected and cooperated with the first adjusting stud and the second adjusting stud.

[0012] As a preferred technical solution of the utility model, the supporting wedge block includes a first right-angled trapezoidal block with a right-angled trapezoidal structure in cross-section, and the first right-angled trapezoidal block is inclined downward; the first right-angled trapezoidal block is symmetrically fixed with a first slider and a second slider on both sides, and the top surface of the first slider is flush with the top surface of the second slider.

[0013] As a preferred technical solution of the utility model, the adjusting wedge block includes a second right-angled trapezoidal block with a right-angled trapezoidal structure in cross-section, and the inclined surface of the second right-angled trapezoidal block is upward; a row of support columns with a top surface as a circular arc surface is fixed on the inclined surface of the second right-angled trapezoidal block, and the support columns are arranged along the inclined surface direction of the second right-angled trapezoidal block.

[0014] As a preferred technical solution of the utility model, the longitudinal beam includes a square tube, a connecting head and a plug, and the two adjacent square tube butt ends are connected by the connecting head and the two plugs; both ends of the square tube are provided with a first pin hole that cooperates with the plug; the connecting head includes a rectangular plug that cooperates with the square tube; a limiting ring plate is fixed in the middle of the rectangular plug; and both ends of the rectangular plug are provided with a second pin hole that cooperates with the plug.

[0015] As a preferred technical solution of the utility model, four positioning columns are arranged on the concrete base seat; and four positioning holes respectively matched with the four positioning columns are opened on the rectangular bottom plate.

[0016] As a preferred technical solution of the utility model, the first adjusting stud includes a first threaded column threadedly connected to the internal threaded lug; a handle is fixed to the end of the first threaded column; the second adjusting stud includes a second threaded column threadedly connected to the internal threaded lug; a coaxially arranged hexagonal prism head is fixed to the end of the second threaded column.

[0017] As a preferred technical solution of the utility model, the crossbeam is an I-beam, an H-beam or a channel steel.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model ensures the stability and horizontality of the foundation by using a pipe pile foundation that is pre-pressed into the soil layer with settlement, and then casting a concrete foundation seat on the upper end. The design of the compensation support seat further enhances the supporting capacity of the foundation, can compensate for the settlement of the pipe pile foundation, and thus ensure the stable support of the upper crossbeam and longitudinal beam.

[0020] 2. The compensation support seat of the utility model can conveniently adjust the support height by adjusting the design of the studs, and can quickly restore the effective support height even after settlement occurs, reducing the adjustment time and cost during construction. By accurately adjusting the height of the compensation support seat, it can ensure that the rows of horizontal beams and the columns of longitudinal beams are on the same horizontal plane, thereby avoiding invalid support in some areas of the supporting steel frame array and ensuring safety during construction.

[0021] 3. The cross beam and longitudinal beam of the utility model adopt standardized structural steel materials, which are easy to install and disassemble, and improve the construction efficiency. The split structural design of the longitudinal beam increases the flexibility of length adjustment, is suitable for construction of different spans, and improves the flexibility and adaptability of construction.

[0022] 4. The foundation treatment device of the utility model adopts a standardized component design, which is easy to purchase and process, reducing the construction cost. The components are easy to connect and disassemble, which also reduces the material waste and labor cost during the construction process.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1It is a structural schematic diagram of the foundation treatment device of the utility model cast-in-place box girder bridge.

[0026] Figure 2 It is a schematic diagram of the structure when the utility model is implemented.

[0027] Figure 3 It is a structural schematic diagram from another perspective when the utility model is implemented.

[0028] Figure 4 This is a structural diagram of the pipe pile foundation.

[0029] Figure 5 It is a schematic diagram of the structure of the compensation support seat.

[0030] Figure 6 Schematic diagram of the structure of the guide base.

[0031] Figure 7 Schematic diagram of the structure of the supporting wedge.

[0032] Figure 8 Schematic diagram of the structure of the adjustment wedge.

[0033] Fig. 9 This is a schematic diagram of the structure of the longitudinal beam.

[0034] Fig.10 A schematic diagram of the structure of the connector.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1-pile foundation, 2-compensating support seat, 3-cross beam, 4-longitudinal beam, 11-pile, 12-concrete foundation seat, 13-positioning column, 21-guide base, 211-rectangular bottom plate, 212-rectangular vertical plate, 213-guide channel, 214-internal threaded ear, 215-positioning hole, 22-support wedge, 221-first right-angle trapezoidal block, 222-first slider, 223-second slider, 23-adjusting wedge, 231-second right-angle trapezoidal block, 232-support column, 24-first adjusting stud, 25-second adjusting stud, 41-square tube, 411-first pin hole, 42-connecting head, 421-rectangular plug, 422-limiting ring plate, 423-second pin hole, 43-pin. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment one:

[0039] See also Figure 1-10 As shown, the utility model is a foundation treatment device for a cast-in-place box girder bridge, comprising a pipe pile foundation 1, a compensation support seat 2, a cross beam 3 and a longitudinal beam 4. The pipe pile foundation 1 comprises a pipe pile 11. A concrete foundation seat 12 is cast in place at the upper end of the pipe pile 11. The compensation support seat 2 is installed on the concrete foundation seat 12. During construction, a plurality of pipe pile foundations 1 are arranged in a rectangular array directly below the cast-in-place box girder bridge. The cross beam 3 is arranged transversely on the compensation support seat 2 in the transverse array. A plurality of longitudinal beams 4 are arranged on a plurality of cross beams 3. Among them, the cross beam 3 can use structural steel such as I-beams, H-beams, and channel steels. In this embodiment, the cross beam 3 uses an I-beam. Among them, the pipe pile 11 of the pipe pile foundation 1 is pre-pressed into the soil layer with settlement below, and then the concrete foundation seat 12 is cast on the upper end of the pipe pile 11. When the concrete foundation seats 12 of the plurality of pipe pile foundations 1 are manufactured, their upper ends are located in the same horizontal plane. The compensating support seat 2 installed on the rectangular array of pipe pile foundations 1 is adjusted to support the rows of horizontal beams 3 on the same horizontal plane to ensure that the upper ends of the rows of longitudinal beams 4 are level. The supporting steel frame array used in the cast-in-place box girder bridge is installed on a row of longitudinal beams 4. The supporting steel frame array is seated on a supporting foundation that has been processed to be stable as a whole, which effectively avoids invalid support in some areas of the supporting steel frame array below the cast-in-place box girder bridge during casting.

[0040] The compensation support seat 2 includes a guide base 21, a support wedge 22, an adjustment wedge 23, a first adjustment stud 24 and a second adjustment stud 25. The guide base 21 includes a rectangular base plate 211. Two rectangular vertical plates 212 are vertically fixed on the upper surface of the rectangular base plate 211. The adjustment wedge 23 moves horizontally and linearly between the two rectangular vertical plates 212. Two vertical guide grooves 213 are provided on the rectangular vertical plates 212. The support wedge 22 moves vertically along the four guide grooves 213. Two internal threaded ears 214 are fixed on the guide base 21, which are respectively threadedly connected with the first adjustment stud 24 and the second adjustment stud 25. The first adjustment stud 24 includes a first threaded column threadedly connected with the internal threaded ear 214. A handle is fixed at the end of the first threaded column. The second adjustment stud 25 includes a second threaded column threadedly connected with the internal threaded ear 214. A coaxially arranged hexagonal prism head is fixed at the end of the second threaded column.

[0041] In order to ensure the installation stability between the compensation support seat 2 and the pipe pile foundation 1 during construction, four positioning columns 13 are arranged on the concrete foundation seat 12. Four positioning holes 215 are opened on the rectangular bottom plate 211 and matched with the four positioning columns 13 respectively.

[0042] After a certain pipe pile foundation 1 settles, the support height of the support wedge 22 is adjusted by manually driving the adjustment wedge 23 through the first adjustment stud 24. When manual adjustment is laborious, the electric wrench manual tool can be used to drive the second adjustment stud 25 to drive the adjustment wedge 23 to adjust the support height of the support wedge 22 in a labor-saving manner. After the compensation support seat 2 on the corresponding pipe pile foundation 1 is adjusted, the top surface of the support wedge 22 is restored to the effective support height position again. The compensation support seat 2 can compensate for the settlement of the pipe pile foundation 1, ensure the effective support of the cross beam 3 above it, ensure the stability of the installation foundation of the supporting steel frame array during construction, and ensure the construction quality of the cast-in-place box girder bridge in the unstable soil layer area.

[0043] Among them, the supporting wedge block 22 includes a first right-angled trapezoidal block 221 with a right-angled trapezoidal structure in cross section, and the first right-angled trapezoidal block 221 is inclined downward. The first slider 222 and the second slider 223 are symmetrically fixed on both sides of the first right-angled trapezoidal block 221, and the top surface of the first slider 222 is flush with the top surface of the second slider 223. Among them, the adjusting wedge block 23 includes a second right-angled trapezoidal block 231 with a right-angled trapezoidal structure in cross section, and the second right-angled trapezoidal block 231 is inclined upward. A row of support columns 232 with a circular arc surface on the top surface is fixed on the inclined surface of the second right-angled trapezoidal block 231, and the support columns 232 are arranged along the inclined surface direction of the second right-angled trapezoidal block 231. The adjusting wedge block 23 and the supporting wedge block 22 are in contact with each other through multiple parallel lines, which ensures stable support while reducing resistance during adjustment.

[0044] The longitudinal beam 4 includes a square tube 41, a connector 42 and a plug 43, and the butt ends of two adjacent square tubes 41 are connected by the connector 42 and two plugs 43. Both ends of the square tube 41 are provided with a first pin hole 411 that matches the plug 43. The connector 42 includes a rectangular plug 421 that is plugged and matched with the square tube 41. A limiting ring plate 422 is fixed in the middle of the rectangular plug 421. Both ends of the rectangular plug 421 are provided with a second pin hole 423 that matches the plug 43. The longitudinal beam 4 adopts a split structure, which reduces the difficulty of construction operation and increases the flexibility of adjusting the length of the longitudinal beam 4, which is suitable for construction of different spans.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A foundation treatment device for a cast-in-place box girder bridge, characterized in that: It comprises a pipe pile foundation (1), a compensating support seat (2), a crossbeam (3) and a longitudinal beam (4); The pipe pile foundation (1) comprises a pipe pile (11); a concrete foundation seat (12) is cast on the upper end of the pipe pile (11); The compensation support seat (2) is installed on the concrete foundation seat (12); The cross beam (3) is arranged transversely on the compensation support seat (2) of the transverse array; A plurality of longitudinal beams (4) are arranged on the plurality of transverse beams (3).

2. The foundation treatment device for a cast-in-place box girder bridge according to claim 1, characterized in that: When the concrete foundation seats (12) of the plurality of pipe pile foundations (1) are manufactured, their upper ends are located on the same horizontal plane.

3. The foundation treatment device for a cast-in-place box girder bridge according to claim 1, characterized in that: The compensation support seat (2) comprises a guide base (21), a support wedge (22), an adjustment wedge (23), a first adjustment stud (24) and a second adjustment stud (25); the guide base (21) comprises a rectangular bottom plate (211); two rectangular vertical plates (212) are vertically fixed to the upper surface of the rectangular bottom plate (211); the adjustment wedge (23) moves horizontally and linearly between the two rectangular vertical plates (212); two vertical guide grooves (213) are provided on the rectangular vertical plates (212); the support wedge (22) moves vertically along the four guide grooves (213); and two internal threaded ears (214) are fixed on the guide base (21) and are respectively threadedly connected to the first adjustment stud (24) and the second adjustment stud (25).

4. The foundation treatment device for a cast-in-situ box girder bridge according to claim 3, characterized in that: The supporting wedge block (22) comprises a first right-angled trapezoidal block (221) having a right-angled trapezoidal cross-section, and the first right-angled trapezoidal block (221) has an inclined surface facing downward; a first sliding block (222) and a second sliding block (223) are symmetrically fixed on both sides of the first right-angled trapezoidal block (221), and the top surface of the first sliding block (222) is flush with the top surface of the second sliding block (223).

5. The foundation treatment device for a cast-in-place box girder bridge according to claim 4, characterized in that: The adjusting wedge block (23) comprises a second right-angled trapezoidal block (231) having a right-angled trapezoidal cross-section, and the second right-angled trapezoidal block (231) has an inclined surface facing upward; a row of support columns (232) having arc-shaped top surfaces are fixed on the inclined surface of the second right-angled trapezoidal block (231), and the support columns (232) are arranged along the inclined surface direction of the second right-angled trapezoidal block (231).

6. The foundation treatment device for a cast-in-place box girder bridge according to claim 1, characterized in that: The longitudinal beam (4) comprises a square tube (41), a connecting head (42) and a latch (43); the butt ends of two adjacent square tubes (41) are connected via the connecting head (42) and the two latches (43); both ends of the square tube (41) are provided with a first pin hole (411) that cooperates with the latch (43); the connecting head (42) comprises a rectangular plug (421) that is plugged and cooperates with the square tube (41); a limiting ring plate (422) is fixed in the middle of the rectangular plug (421); and both ends of the rectangular plug (421) are provided with a second pin hole (423) that cooperates with the latch (43).

7. The foundation treatment device for a cast-in-situ box girder bridge according to claim 3, characterized in that: Four positioning columns (13) are arranged on the concrete base (12); and four positioning holes (215) respectively cooperating with the four positioning columns (13) are opened on the rectangular bottom plate (211).

8. The foundation treatment device for a cast-in-situ box girder bridge according to claim 3, characterized in that: The first adjustment stud (24) comprises a first threaded column threadedly connected to the internal threaded lug (214); a handle is fixed to the end of the first threaded column; the second adjustment stud (25) comprises a second threaded column threadedly connected to the internal threaded lug (214); a coaxially arranged hexagonal column head is fixed to the end of the second threaded column.

9. The foundation treatment device for a cast-in-situ box girder bridge according to claim 1, characterized in that: The crossbeam (3) is an I-beam, an H-beam or a channel steel.

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