CN216892494U - Light prefabricated foundation - Google Patents

Abstract

The utility model relates to a light prefabricated foundation, which comprises a raft foundation and a connecting structure, wherein the connecting structure is fixedly connected to the raft foundation and detachably connected with a tower. According to the utility model, through the arrangement of the raft foundation, the soil is covered on the raft foundation, the gravity of the foundation is increased, and the bending resistance and the overturning resistance of the tower are resisted by the self gravity and the soil gravity together, so that the gravity foundation is replaced, therefore, the prefabricated foundation is miniaturized, lightened, convenient to transport and low in transportation cost; through the arrangement of the bolts, the assembly and disassembly of the pole tower and the raft foundation are facilitated, the installation process is simplified, and the installation of the pole tower is facilitated; due to the arrangement of the positioning plate, the connection strength between the foundation bolts is convenient to enhance, and meanwhile, the positioning effect is given to the foundation bolts; through the arrangement of the column head main ribs, the peripheral ribs and the short ribs, the connection strength of the foundation bolts and the raft foundation is enhanced.

Description

Light prefabricated foundation

Technical Field

The utility model belongs to the field of electric power transmission equipment, and particularly relates to the field of rapid construction of a tower foundation.

Background

In recent years, the power and communication technology is rapidly developed, a large number of power transmission lines and mobile communication base stations, overhead line towers, communication towers and foundations matched with the overhead line towers and the communication towers are built, and technical innovation is continuously carried out. The foundation of the traditional overhead line tower and communication tower is in the form of an excavation type step foundation, a cast-in-place pile foundation, a steel pipe pile foundation and the like. Because the traditional step foundation and cast-in-place pile foundation need to be excavated, and then the formwork is erected and poured. The problems of limited construction in winter, long construction period, uncontrollable construction quality and the like exist. Although the steel pipe pile can be constructed without being limited by seasons, the construction period is short, but the steel material causes corrosion of different degrees after the steel pipe pile has long operation time due to water, air and other corrosive media in the soil environment, and the service life is influenced.

With the development of foundation technology, prefabricated gravity foundations, prefabricated pile foundations and the like appear in the later period. The use condition of pile foundation is more harsh to the geology requirement of soil, run into geology such as morals and manners rock, coarse sand, the pile construction difficulty can appear, the problem that the stake can not be beaten into, gravity base application scope is wide, do not receive geological conditions restriction, and gravity type basis mainly relies on the gravity of basis to support the shaft tower, the shaft tower can be bending resistance when receiving the load, the antidumping nevertheless exists because the volume is bigger, the weight is heavier, inconvenient transportation, problems such as cost of transportation height, especially the place far away of distance, cost of transportation is higher than the product cost even far away.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a light prefabricated foundation which is miniaturized and lightened, is convenient to transport and has low transportation cost.

The utility model is realized through the following technical scheme that the light prefabricated foundation comprises a raft foundation and a connecting structure which is fixedly connected on the raft foundation and detachably connected with a pole tower.

When the raft foundation is used, the raft foundation is miniaturized and lightened, the transportation is convenient, the transportation cost is low, the embedding depth is large, soil covers the raft foundation, the gravity of the foundation can be increased, the bending resistance and the overturning resistance of the tower can be resisted by the aid of the gravity of the foundation and the soil gravity, the gravity foundation is replaced, the communication tower and the power transmission line tower can be operated safely for a long time, and meanwhile, the connection between the tower and the raft foundation is realized by the aid of the connecting mechanism.

Preferably, the connecting structure comprises a plurality of bolts fixedly connected to the raft foundation, and the bolts are in threaded connection with threaded holes of the tower flanges correspondingly.

This preferred scheme passes through the setting of bolt to be convenient for shaft tower and raft foundation's loading and unloading simplify the installation, the installation of the shaft tower of being convenient for.

Preferably, the bolt comprises an anchor bolt. This preferred scheme passes through rag bolt's setting, is convenient for increase rag bolt and raft foundation's joint strength.

As preferred, still include along the locating plate, set up a plurality of first perforation that run through locating plate and circumference and arrange on the locating plate, first perforation corresponds the setting with rag bolt, and rag bolt rigid coupling is in first perforation.

This preferred scheme passes through the setting of locating plate, is convenient for strengthen the joint strength between the rag bolt, gives rag bolt positioning action simultaneously.

Preferably, the number of the positioning plates is two, and the two positioning plates are vertically arranged. This preferred scheme is through the setting of two locating plates, direction and positioning action when giving rag bolt installation.

Preferably, still be equipped with a plurality of column cap owner muscle of arranging along circumference on the raft foundation to and connect a plurality of column cap owner muscle and be located the peripheral muscle in a plurality of column cap owner muscle outsides, a plurality of column cap owner muscle are located between a plurality of bolts and the peripheral muscle, the bolt is connected with peripheral muscle through short muscle.

This preferred scheme passes through the setting of column cap owner muscle, peripheral muscle, short muscle, strengthens foundation bolt and raft foundation's joint strength.

Preferably, be equipped with along the vertical two-layer muscle net of arranging on the raft foundation, two-layer muscle net is through the first perpendicular muscle rigid coupling of vertical extension, the muscle net includes the crisscross rigid coupling of horizontal muscle of a plurality of horizontal extensions and the muscle of indulging if the vertical extension of pole forms.

This preferred scheme passes through the setting of muscle net and first perpendicular muscle, strengthens raft foundation's support intensity.

Preferably, the bottom end of the anchor bolt is fixedly connected with the lower rib net. This preferred scheme's setting is convenient for strengthen rag bolt and raft foundation's joint strength.

Preferably, the column head main rib is further fixedly connected with a grounding nut connected with a tower. This preferred scheme is through the setting of ground nut, is convenient for earn the joint strength of raft foundation and shaft tower.

Preferably, the raft foundation is further provided with four lifting rings which are arranged in a rectangular shape, the lifting rings are located on the diagonal line of the raft foundation, and the bottom ends of the lifting rings are fixedly connected with the rib nets located below.

This preferred scheme is through the setting of rings, the hoist and mount of raft foundation of being convenient for.

The utility model has the beneficial effects that: through the arrangement of the raft foundation, the soil is covered on the raft foundation, the gravity of the foundation is increased, and the bending resistance and the overturning resistance of the tower are resisted by the self gravity and the soil gravity together, so that the gravity foundation is replaced, and therefore, the prefabricated foundation is miniaturized, lightened, convenient to transport and low in transportation cost; through the arrangement of the bolts, the assembly and disassembly of the pole tower and the raft foundation are facilitated, the installation process is simplified, and the installation of the pole tower is facilitated; due to the arrangement of the positioning plate, the connection strength between the foundation bolts is convenient to enhance, and meanwhile, the positioning effect is given to the foundation bolts; through the arrangement of the column head main ribs, the peripheral ribs and the short ribs, the connection strength of the foundation bolts and the raft foundation is enhanced.

Drawings

FIG. 1 is a schematic perspective front view of the present invention;

FIG. 2 is a schematic cross-sectional view taken at A-A in FIG. 1;

FIG. 3 is a schematic front view of a foundation bolt;

FIG. 4 is a top view of the positioning plate;

shown in the figure:

1. raft foundation, 2, foundation bolts, 4 longitudinal ribs, 5 transverse ribs 6, vertical ribs 7, grounding nuts 8, hanging rings 9, column head main ribs, 10, short ribs, 11, peripheral ribs, 12 and positioning plates.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

Referring to the attached drawings 1-4, the light prefabricated foundation comprises a raft foundation 1, two positioning plates 12 which are vertically arranged are arranged inside and above the raft foundation 1, a plurality of first through holes which are circumferentially arranged are formed in the positioning plates 12, the first through holes are arranged corresponding to threaded holes of tower flanges, foundation bolts 2 penetrate through the first through holes, and the foundation bolts 2 are welded in the first through holes.

Still be equipped with vertical extension and a plurality of column cap owner muscle 9 of arranging along circumference on raft foundation 1 to and connect a plurality of column cap owner muscle 9 and be located the peripheral muscle 11 in a plurality of column cap owner muscle 9 outsides, peripheral muscle is equipped with a plurality of, and the peripheral muscle of a plurality of is arranged along vertical, and a plurality of column cap owner muscle 9 is located between a plurality of bolts and the peripheral muscle 11, and rag bolt 2 is connected with peripheral muscle 11 through short muscle 10, and it has the ground nut 7 of being connected with the shaft tower to go back the rigid coupling on column cap owner muscle 9.

Be equipped with on raft foundation 1 along the vertical two-layer muscle net of arranging, two-layer muscle net is through the first 6 rigid couplings of perpendicular muscle of vertical extension, the muscle net includes that a plurality of horizontal muscle 5 of horizontal extension and if the crisscross rigid coupling of the muscle 4 of indulging of the vertical extension of pole form, rag bolt 2's bottom and the muscle net rigid coupling that is located the below.

Four lifting rings 8 which are arranged in a rectangular shape are further arranged on the raft foundation 1, the lifting rings 8 are located on the diagonal lines of the raft foundation 1, and the bottom ends of the lifting rings 8 are fixedly connected with the rib nets located below.

Specifically, as shown in fig. 2, the water direction is transverse, the vertical direction is longitudinal, and the direction perpendicular to the plane of fig. 2 is vertical.

When the foundation is used, the foundation is excavated to the designed depth according to the design requirements during construction, a cushion layer with the thickness of 100mm is constructed, the length and the width of the cushion layer are both wider than the rooted raft foundation 1, the raft is 100mm, the surface of the cushion layer needs to be horizontal, then the raft foundation 1 is placed on the cushion layer, a flange hole of the lowest section of a power transmission line tower or a communication tower is aligned with the foundation bolt 2, the verticality of the tower is adjusted, and after the requirements are met, a gasket and a nut are installed. The ground flat iron is fixedly connected with the embedded ground screws on the rooted raft foundation 1 through bolts, the ground flat iron is wound on the foundation, then soil is backfilled, the backfilled soil needs to be backfilled layer by layer, the backfilling thickness does not exceed 300mm, the ground flat iron needs to be tamped layer by layer after the backfilling layer by layer, and the tamping height needs to be kept at the same horizontal position with the original ground.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.

Claims (7)

1. A prefabricated basis of lightweight which characterized in that: including raft foundation (1) to and the rigid coupling on raft foundation (1) and can dismantle the connection structure who is connected with the shaft tower, connection structure includes a plurality of bolts on raft foundation (1) with the rigid coupling, the bolt corresponds threaded connection with the screw hole of shaft tower flange, the bolt includes rag bolt (2), be equipped with on raft foundation (1) along vertical two-layer muscle net of arranging, two-layer muscle net is through the first perpendicular muscle (6) rigid coupling of vertical extension, the muscle net includes horizontal muscle (5) of a plurality of horizontal extensions and if the crisscross rigid coupling of muscle (4) of indulging of the vertical extension of pole forms.

2. The lightweight prefabricated foundation of claim 1, wherein: still include along locating plate (12), set up a plurality of first perforation that run through locating plate (12) and circumference and arrange on locating plate (12), first perforation corresponds the setting with rag bolt (2), and rag bolt (2) rigid coupling is in first perforation.

3. The lightweight prefabricated foundation of claim 2, wherein: the locating plate is equipped with two, and two locating plates are along vertical arranging.

4. The lightweight prefabricated foundation of claim 1, wherein: still be equipped with a plurality of column cap owner muscle (9) of arranging along circumference on raft foundation (1) to and connect a plurality of column cap owner muscle (9) and be located peripheral muscle (11) in a plurality of column cap owner muscle (9) outsides, a plurality of column cap owner muscle (9) are located between a plurality of bolts and peripheral muscle (11), the bolt is connected with peripheral muscle (11) through short muscle (10).

5. The lightweight prefabricated foundation of claim 1, wherein: the bottom end of the foundation bolt (2) is fixedly connected with a rib net positioned below.

6. The lightweight prefabricated foundation of claim 4, wherein: and a grounding nut (7) connected with a tower is further fixedly connected to the column head main rib (9).

7. The lightweight prefabricated foundation of claim 1, wherein: four lifting rings (8) which are arranged in a rectangular shape are further arranged on the raft foundation (1), the lifting rings (8) are located on diagonal lines of the raft foundation (1), and the bottom ends of the lifting rings (8) are fixedly connected with the rib nets located below.

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