CN203361184U

CN203361184U - Tower foundation form of overhead transmission line

Info

Publication number: CN203361184U
Application number: CN 201320467833
Authority: CN
Inventors: 赵光泰
Original assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Current assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2013-12-25
Anticipated expiration: 2023-07-31

Abstract

The utility model discloses a tower foundation form of an overhead transmission line, which comprises a reinforced concrete foundation pillar, a concrete step and a reinforced concrete baseplate, wherein the reinforced concrete foundation pillar is partially buried under a design ground, the concrete step is completely buried under the design ground, the reinforced concrete baseplate is completely buried under the design ground; the reinforced concrete foundation pillar, the concrete step and the reinforced concrete baseplate are integrated by casting; the concrete step is glued on the reinforced concrete baseplate, the reinforced concrete foundation pillar is glued on the concrete step, and the reinforced concrete foundation pillar is connected with the concrete step and the reinforced concrete baseplate through a foundation pillar load-bearing rebar; a concrete cushion layer is paved below the reinforced concrete baseplate, multiple baseplate load-bearing rebars and multiple baseplate stirrups are arranged in the reinforced concrete baseplate, and the baseplate stirrups are bound on the baseplate load-bearing rebars. According to the utility model, on the premise of satisfying the requirements of foundation bearing capacity, the application amounts of foundation baseplate concrete and rebars are maximumly saved, and the engineering cost and the manufacturing cost are saved.

Description

A kind of overhead power transmission line pole tower basis pattern

Technical field

The utility model belongs to high pressure, extra high voltage network pole and tower foundation field, particularly relates to a kind of overhead power transmission line pole tower basis pattern.

Background technology

At present, domestic field of overhead power transmission lines, digging up and filling in class sole plate divides rigid table stepwise and flexible board-like two large classes.Rigid table stepped foundation base plate is comprised of concrete step fully, and numbers of steps is many, and the concrete material consumption is large, and cost is higher.Flexible slab foundation generally is comprised of two-layer step, when bearing upper load, also can make three layers of step when larger, and each step all configures steel bar stress up and down, and the step depth-width ratio press the 1:2.5 setting.

In realizing process of the present utility model, utility model people finds that at least there is following problem in prior art:

(1) digging up and filling in class rigid table stepped foundation, when bearing the larger load action in top, the method that can only take to increase numbers of steps or strengthen step thicknesses resist upper load on pull out or press down, so just make that numbers of steps is more, concrete amount is huge increases.During the mountain area engineering construction, because hill path is precipitous, vehicle should not arrive destination, and construction material can only adopt the mode of a dead lift, adopt this kind of basic pattern concrete amount large, the transportation of basic material has caused again the increase of foundation construction expense virtually in addition.

(2) the flexible slab foundation of digging up and filling in class, applying at present more is the basic pattern of one deck step or two-layer step, step all configures steel bar stress up and down.This kind of basic pattern improved the ability of opposing upper load to a certain extent, but when basis is two-layer or during three layers of step, steel bar stress in second and third layer of step is constructional reinforcement, not controlled by upper load, this part reinforcing bar the inevitable basic amount of reinforcement that strengthened is set, increased basic operating expenses.

Generally speaking, above-mentioned basic pattern defect be those skilled in the art's technical problems in the urgent need to address.

The utility model content

The purpose of this utility model is the deficiency of comprehensive existing basic pattern, a kind of overhead power transmission line pole tower basis pattern is provided, under the prerequisite that meets the foundation bearing capacity requirement, farthest save base concrete and amount of reinforcement, save engineering cost and cost, for basic optimization provides a kind of scientific method.

Above-mentioned purpose of the present utility model, can implement by the following technical programs:

A kind of overhead power transmission line pole tower basis pattern, comprise that part is embedded in the underground reinforced concrete pillar of design, all is embedded in the underground concrete step of design and all is embedded in the underground reinforced concrete floor of design, described reinforced concrete pillar, concrete step and reinforced concrete floor are cast and are integrated, cementing concrete step on described reinforced concrete floor, cementing reinforced concrete pillar on described concrete step, described reinforced concrete pillar is connected with reinforced concrete floor with concrete step by the pilum steel bar stress; Described reinforced concrete floor below is covered with concrete cushion, be provided with some bottom slab stress reinforcing bars and some base plate stirrups in described reinforced concrete floor, the colligation of described base plate stirrup is on the bottom slab stress reinforcing bar, described reinforced concrete pillar the inside is provided with some pilum steel bar stresses and some pilum stirrups, the colligation of described pilum stirrup is on the pilum steel bar stress, and described pilum steel bar stress is anchored in concrete step and reinforced concrete floor.

It is 200～1200mm that described reinforced concrete pillar exposes the height that designs ground.

The kernel of section three of the kernel of section of described reinforced concrete pillar, the kernel of section of concrete step and reinforced concrete floor on basic axis, the line of the kernel of section that described basic axis is reinforced concrete pillar and the kernel of section of reinforced concrete floor.

Described reinforced concrete pillar is vertical with concrete step and reinforced concrete floor or tilts.

Described concrete step is truncated rectangular pyramids shape, and the concrete step depth-width ratio is 1:1; The upper surface of described concrete step overlaps with end section under reinforced concrete pillar.

The depth-width ratio of described reinforced concrete floor is 1:2.5.

The cross section of described reinforced concrete floor is square, and the cross section of described reinforced concrete pillar is square.

Described reinforced concrete pillar, concrete step and reinforced concrete floor concrete strength grade used is not less than C20, described concrete cushion strength grade is not less than C10, and described bottom slab stress reinforcing bar and base plate stirrup and pilum steel bar stress and pilum stirrup material are not less than HPB300.

The beneficial effects of the utility model:

1. the utility model compares with the basic pattern of tradition the consumption that can significantly save concrete and steel.

2. the utility model sole plate is by the upper strata concrete step with lower floor's reinforced concrete floor is cementing forms, and its tectonic type is that the electric power line pole tower basic field is pioneering, combines the great advantage of traditional basic pattern, makes its stressed optimum, and it is the most reasonable to construct;

3. the utility model can strengthen the length of lower floor's reinforced concrete floor, reduces the tension and compression stress that base plate when pulling out load and pressing down load is born on basis, thereby reduces the quantity of reinforcement of reinforced concrete floor, saves engineering cost and cost;

4. the utility model can strengthen sole plate in the upper supporting capacity of shearing and press down basis when die-cut of pulling out;

5. after the utility model concrete step is designed to truncated rectangular pyramids, can strengthen the anchorage length of reinforced concrete pillar steel bar stress, meet the anchoring regulation of steel bar stress.

The accompanying drawing explanation

Fig. 1 is a kind of overhead power transmission line pole tower of the utility model basis pattern schematic diagram ();

The top view that Fig. 2 is Fig. 1;

Fig. 3 is a kind of overhead power transmission line pole tower of the utility model basis pattern schematic diagram (two);

The top view that Fig. 4 is Fig. 3;

Wherein, 1, design ground, 2, reinforced concrete pillar, 3, concrete step, 4, reinforced concrete floor, 5, concrete cushion, 6, the pilum steel bar stress, 7, the pilum stirrup, 8, the bottom slab stress reinforcing bar, 9, the base plate stirrup, 10, basic axis.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.

As Figure 1-4, a kind of overhead power transmission line pole tower basis pattern, comprise that part is embedded in the reinforced concrete pillar 2 under design ground 1, all be embedded in the concrete step 3 under design ground 1 and all be embedded in the reinforced concrete floor 4 under design ground 1, described reinforced concrete pillar 2, concrete step 3 and reinforced concrete floor 4 are cast and are integrated, cementing concrete step 3 on described reinforced concrete floor 4, cementing reinforced concrete pillar 2 on described concrete step 3, described reinforced concrete pillar 2 is connected with reinforced concrete floor 4 with concrete step 3 by pilum steel bar stress 6, described reinforced concrete floor 4 belows are covered with concrete cushion 5, be provided with some bottom slab stress reinforcing bars 8 and some base plate stirrups 9 in described reinforced concrete floor 4, described base plate stirrup 9 colligations are on bottom slab stress reinforcing bar 8, described reinforced concrete pillar 2 the insides are provided with some pilum steel bar stresses 6 and some pilum stirrups 7, described pilum stirrup 7 colligations are on pilum steel bar stress 6, and described pilum steel bar stress 6 is anchored in concrete step 3 and reinforced concrete floor 4.

It is 200～1200mm that described reinforced concrete pillar 2 exposes the height that designs ground 1.

The kernel of section three of the kernel of section of the kernel of section of described reinforced concrete pillar 2, concrete step 3 and reinforced concrete floor 4 on basic axis 10, the line of the kernel of section that described basic axis 10 is reinforced concrete pillar 2 and the kernel of section of reinforced concrete floor 4.

Described reinforced concrete pillar 2 is vertical with concrete step 3 and reinforced concrete floor 4 or tilts.

Described concrete step 3 is truncated rectangular pyramids shape, and the depth-width ratio of concrete step 3 is 1:1; 2 times end sections of the upper surface of described concrete step 3 and reinforced concrete pillar overlap.

The depth-width ratio of described reinforced concrete floor 4 is 1:2.5.

The cross section of described reinforced concrete floor 4 is square, and the cross section of described reinforced concrete pillar 2 is square.

Described reinforced concrete pillar 2, concrete step 3 and reinforced concrete floor 4 concrete strength grade used is not less than C20, described concrete cushion 5 strength grades are not less than C10, and described bottom slab stress reinforcing bar 8 and base plate stirrup 9 and pilum steel bar stress 6 and pilum stirrup 7 materials are not less than HPB300.

Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.

Claims

1. overhead power transmission line pole tower basis pattern, it is characterized in that, comprise that part is embedded in the underground reinforced concrete pillar of design, all be embedded in the underground concrete step of design and all be embedded in the underground reinforced concrete floor of design, described reinforced concrete pillar, concrete step and reinforced concrete floor are cast and are integrated, cementing concrete step on described reinforced concrete floor, cementing reinforced concrete pillar on described concrete step, described reinforced concrete pillar is connected with reinforced concrete floor with concrete step by the pilum steel bar stress, described reinforced concrete floor below is covered with concrete cushion, be provided with some bottom slab stress reinforcing bars and some base plate stirrups in described reinforced concrete floor, the colligation of described base plate stirrup is on the bottom slab stress reinforcing bar, described reinforced concrete pillar the inside is provided with some pilum steel bar stresses and some pilum stirrups, the colligation of described pilum stirrup is on the pilum steel bar stress, and described pilum steel bar stress is anchored in concrete step and reinforced concrete floor.

2. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, is characterized in that, it is 200～1200mm that described reinforced concrete pillar exposes the height that designs ground.

3. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, it is characterized in that, the kernel of section three of the kernel of section of described reinforced concrete pillar, the kernel of section of concrete step and reinforced concrete floor on basic axis, the line of the kernel of section that described basic axis is reinforced concrete pillar and the kernel of section of reinforced concrete floor.

4. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, is characterized in that, described reinforced concrete pillar is vertical with concrete step and reinforced concrete floor or tilts.

5. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, is characterized in that, described concrete step is truncated rectangular pyramids shape, and the concrete step depth-width ratio is 1:1; The upper surface of described concrete step overlaps with end section under reinforced concrete pillar.

6. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, is characterized in that, the depth-width ratio of described reinforced concrete floor is 1:2.5.

7. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, is characterized in that, the cross section of described reinforced concrete floor is square, and the cross section of described reinforced concrete pillar is square.

8. a kind of overhead power transmission line pole tower as claimed in claim 1 basis pattern, it is characterized in that, described reinforced concrete pillar, concrete step and reinforced concrete floor concrete strength grade used is not less than C20, described concrete cushion strength grade is not less than C10, and described bottom slab stress reinforcing bar and base plate stirrup and pilum steel bar stress and pilum stirrup material are not less than HPB300.