CN214574102U

CN214574102U - Lightweight enlarged foundation

Info

Publication number: CN214574102U
Application number: CN202120043649.7U
Authority: CN
Inventors: 徐海宁; 黄胜军; 郑晨曦; 金京锋
Original assignee: Zhejiang Communications Construction Group Co Ltd
Current assignee: Zhejiang Communications Construction Group Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-11-02
Anticipated expiration: 2031-01-08

Abstract

The utility model relates to a lightweight enlarged foundation, which comprises a foundation base and pad beam assemblies symmetrically arranged on the foundation base, wherein a plurality of bearing beams are vertically arranged between the pad beam assemblies, steel backing plates are arranged on the bearing beams, and standardized joints are fixedly arranged on the steel backing plates; the utility model has the advantages of simple structure, ingenious design, low construction cost, good structural reliability, high adaptability, easy turnover, and the like; has better construction convenience.

Description

Lightweight enlarged foundation

Technical Field

The utility model belongs to the technical field of bridge engineering, concretely relates to lightweight enlarges basis.

Background

In bridge construction, an enlarged foundation is often adopted to directly transmit loads transmitted from structures such as a cast-in-place support and the like to a shallower foundation. The expanded foundation has the characteristics of convenient construction and high economical efficiency compared with other foundation treatment modes such as a pile foundation and the like. However, the conventional enlarged foundation is limited by large upper bearing load, high integral deformation requirement of the support, limited foundation bearing capacity and the like, and is often overlarge in appearance size and heavy in self weight. This is neither conducive to expanding the foundation itself for cost control nor to the use in the field.

In view of the above technical problems, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the defect among the above-mentioned prior art, provide a simple structure reasonable, it is whole firm, safety, economy, environmental protection, and be applicable to the lightweight of the cast-in-place support of construction and enlarge the basis.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a basis is enlarged in lightweight, includes the basic base, and the symmetry sets up the pad roof beam subassembly on the basic base, fills up and installs a plurality of spandrels between the roof beam subassembly perpendicularly, installs the steel backing plate on a plurality of spandrels, has set firmly standardized joint on the steel backing plate.

As the utility model discloses an optimal mode, fill up the roof beam subassembly and include two pad roof beams, fill up and be connected through the straight anchor bar of pad roof beam between roof beam and the basic base.

As an optimal mode of the utility model, the both ends of a plurality of spandrel girders and the tip of the pad roof beam are on same vertical plane, and the spandrel girder is laid in the middle part of filling up the roof beam.

As an optimized mode of the utility model, the spandrel girder and the pad roof beam are fastened through the connecting piece by themselves.

As an optimized mode of the utility model, the steel backing plate sets firmly in the middle part of a plurality of spandrel girders, and the width of steel backing plate is unanimous with the width of a plurality of spandrel girders.

As an optimized mode of the present invention, the area of the steel base plate is larger than the area of the bottom surface of the standardized joint.

As a preferred mode of the present invention, the standardized joints include a top plate, a bottom plate, and a steel pipe; the top plate and the bottom plate are fixedly arranged at the upper end and the lower end of the steel pipe; the outside circumference equidistance of steel pipe has laid a plurality of stiffening steel plates, and the bottom of roof is supported to the upper end of stiffening steel plate, and the lower extreme of stiffening steel plate supports the upper end of supporting the bottom plate.

As an optimal mode of the utility model, roof, bottom plate, steel pipe and stiffening steel sheet fixed connection, integrated into one piece.

As the utility model discloses an optimal mode, the outer end of the steel sheet of putting more energy into is on same vertical face with the outer end of roof, and the area of bottom plate is greater than the roof area.

As the utility model discloses an optimal mode, the symmetry is provided with four rings on the basis base, and four rings are located the pad roof beam outside to, rings and pad leave the interval between the roof beam.

The utility model has the advantages that:

1. the utility model has the advantages of simple structure, ingenious design, low construction cost, good structural reliability, high adaptability, easy turnover, and the like; the construction convenience is better;

2. the utility model can use the bearing beam and the above components as one part, the pad beam and the enlarged foundation as one part, and the two parts are connected by bolts, thus having better installation and disassembly convenience when the hoisting equipment on the construction site can not meet the hoisting requirement;

3. the bearing beam and the pad beam of the utility model are connected into a whole through the bolt, and the structural integrity is good; the section steel has high rigidity, small deformation and better construction reliability;

4. the utility model adopts the bearing beam and the shaped steel of the pad beam to bear the force, thereby effectively reducing the thickness of the enlarged foundation and reducing the dead weight by 45 percent compared with the conventional concrete enlarged foundation;

5. the utility model discloses possess portable and repeated turnover service property, have better convenience and economic nature.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an exploded view of the embodiment of the present invention;

fig. 3 is a front view of an embodiment of the present invention;

fig. 4 is a side view of an embodiment of the invention;

FIG. 5 is a top view of an un-standardized fitting of an embodiment of the present invention;

reference numbers in the figures: the steel plate supporting structure comprises a foundation base 1, a pad beam straight anchor bar 2, a pad beam 3, a connecting piece 4, a bearing beam 5, a steel pad plate 6, a top plate 7, a bottom plate 8, a steel pipe 9, a stiffening steel plate 10, a lifting ring 11, a standardized joint 20 and a pad beam assembly 30.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Example (b): as shown in fig. 1-5, a lightweight enlarged foundation comprises a foundation base 1, pad beam assemblies 30 symmetrically arranged on the foundation base 1, a plurality of bearing beams 5 vertically arranged between the pad beam assemblies 30, steel pad plates 6 arranged on the bearing beams 5, and standardized joints 20 fixedly arranged on the steel pad plates 6; the utility model has the advantages of simple structure, ingenious design, low construction cost, good structural reliability, high adaptability, easy turnover, and the like; has better construction convenience.

Specifically, the standardized joint 20 comprises a top plate 7, a bottom plate 8 and a steel pipe 9; the top plate 7 and the bottom plate 8 are fixedly arranged at the upper end and the lower end of the steel pipe 9; a plurality of stiffening steel plates 10 are arranged on the outer side of the steel pipe 9 in the circumferential equidistance mode, the upper ends of the stiffening steel plates 10 abut against the bottom of the top plate 7, and the lower ends of the stiffening steel plates 10 abut against the upper end of the bottom plate 8. The top plate 7, the bottom plate 8, the steel pipe 9 and the stiffening steel plate 10 are fixedly connected and integrally formed; the structural strength and the whole firmness of the standardized joint 20 are improved, the use safety is further guaranteed, the outer end of the stiffening steel plate 10 and the outer end of the top plate 7 are on the same vertical surface, the area of the bottom plate 8 is larger than that of the top plate 7, and the standard connecting piece 20 and the steel base plate 6 are convenient to weld and fix.

The pad beam assembly 30 comprises two pad beams 3, the pad beams 3 are connected with the foundation base 1 through pad beam straight anchor bars 2, and the pad beam straight anchor bars 2 are welded with the pad beams 3 before concrete pouring of the foundation base 1 and then are bound with the foundation base 1 into a whole; the connection process is simple and convenient, and the strength is ensured.

The two ends of the bearing beams 5 and the end parts of the cushion beams 3 are on the same vertical plane, the bearing beams 5 are arranged in the middle of the cushion beams 3, the bearing beams 5 and the cushion beams 3 are fastened by the connecting pieces 4, wherein the connecting pieces 4 are bolts, the utility model can take the bearing beams 5 and the above components as one part, the cushion beams 3 and the enlarged foundation as one part, the two parts are connected by bolts, and when the hoisting equipment cannot meet the hoisting requirement on a construction site, the hoisting equipment has better mounting and dismounting convenience; specifically, the bearing beam 5 and the pad beam 3 are connected into a whole through bolts, so that the structural integrity is good; the section steel has high rigidity, small deformation and better construction reliability.

The spandrel girder 5 is arranged on the pad beam 3 and is fixed by bolts through the connecting piece 4. Spandrel girder 5 and the bolt hole that fills up roof beam 3 all process in the mill and accomplish, need its axis location of strict control, interval in the course of working, simultaneously, the utility model discloses because of the shaped steel that adopts spandrel girder 5 and fill up roof beam 3 carries out the atress, has effectively reduced the thickness that enlarges the basis, and the dead weight enlarges the basis and has reduced 45% than conventional concrete.

The steel backing plate 6 is fixedly arranged in the middle of the bearing beams 5, the width of the steel backing plate 6 is consistent with that of the bearing beams 5, and the area of the steel backing plate 6 is larger than that of the bottom surface of the standardized joint 20; the steel backing plate 6 and the bearing beam 5 are connected in a welding mode.

Four lifting rings 11 are symmetrically arranged on the base 1, the four lifting rings 11 are positioned on the outer side of the pad beam 3, and a space is reserved between each lifting ring 11 and the pad beam 3; the rings 11 in this embodiment are preset in the base, and are convenient to mount, dismount and turn around.

In the embodiment, the concrete implementation mode is that bolt holes are arranged around the top plate 7, during construction, after the installation of the expanded foundation is finished, the support steel pipe upright is put down from the upper part of the standard connecting piece, the bolt holes are also preset at the bottom end of the upright, and the top plate 7 and the upright are fixedly connected through bolts; bolt holes around the top plate 7 need to be machined in a factory, and the axis positioning and spacing of the bolt holes also need to be strictly controlled in the machining process.

Specifically, the standard connecting member 20 can be adjusted according to the type of the upright column, and if the upright column is in the form of H-shaped steel, the standard connecting member can be made of a top plate, a bottom plate and the H-shaped steel, so that the modularization degree is high, the adaptability is good, and the cast-in-place support structure can be applied to different similar cast-in-place support structures.

The utility model discloses possess portable and repeated turnover service property, have better convenience and economic nature.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: the terms of the foundation base 1, the straight anchor bars 2 of the pad beam, the pad beam 3, the connecting piece 4, the bearing beam 5, the steel pad plate 6, the top plate 7, the bottom plate 8, the steel pipe 9, the stiffening steel plate 10, the lifting ring 11, the standardized joint 20, the pad beam assembly 30 and the like do not exclude the possibility of using other terms; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A lightweight enlarged foundation, characterized in that: the steel plate supporting device comprises a base (1), wherein pad beam assemblies (30) are symmetrically arranged on the base (1), a plurality of bearing beams (5) are vertically arranged between the pad beam assemblies (30), steel base plates (6) are arranged on the bearing beams (5), and standardized joints (20) are fixedly arranged on the steel base plates (6).

2. The lightweight enlarged base according to claim 1, wherein: the pad beam assembly (30) comprises two pad beams (3), and the pad beams (3) are connected with the base (1) through pad beam straight anchor bars (2).

3. The lightweight enlarged base according to claim 2, wherein: the two ends of the bearing beams (5) and the end part of the pad beam (3) are on the same vertical plane, and the bearing beams (5) are arranged in the middle of the pad beam (3).

4. The lightweight enlarged base according to claim 3, wherein: the bearing beam (5) and the pad beam (3) are fastened through the connecting piece (4).

5. The lightweight enlarged base according to claim 1, wherein: the steel backing plate (6) is fixedly arranged in the middle of the bearing beams (5), and the width of the steel backing plate (6) is consistent with that of the bearing beams (5).

6. The lightweight enlarged base according to claim 5, wherein: the area of the steel backing plate (6) is larger than that of the bottom surface of the standardized joint (20).

7. The lightweight enlarged base according to claim 6, wherein: the standardized joint (20) comprises a top plate (7), a bottom plate (8) and a steel pipe (9); the top plate (7) and the bottom plate (8) are fixedly arranged at the upper end and the lower end of the steel pipe (9); the outside circumference equidistance of steel pipe (9) has laid a plurality of stiffening steel plates (10), and the bottom that leans on roof (7) is supported to the upper end of stiffening steel plate (10), and the lower extreme of stiffening steel plate (10) supports the upper end that leans on bottom plate (8).

8. The lightweight enlarged base according to claim 7, wherein: the top plate (7), the bottom plate (8), the steel pipe (9) and the stiffening steel plate (10) are fixedly connected and integrally formed.

9. The lightweight enlarged base according to claim 8, wherein: the outer end of the stiffening steel plate (10) and the outer end of the top plate (7) are on the same vertical surface, and the area of the bottom plate (8) is larger than that of the top plate (7).

10. The lightweight enlarged base according to claim 1 or 2, wherein: four lifting rings (11) are symmetrically arranged on the base (1), the four lifting rings (11) are located on the outer side of the pad beam (3), and a space is reserved between each lifting ring (11) and the pad beam (3).