CN201588222U

CN201588222U - Superposed digging/embedding foundation

Info

Publication number: CN201588222U
Application number: CN2009200948564U
Authority: CN
Inventors: 刘洪义; 张显峰
Original assignee: Northeast Electric Power Design Institute of China Power Engineering Consulting Group
Current assignee: Northeast Electric Power Design Institute of China Power Engineering Consulting Group
Priority date: 2009-12-02
Filing date: 2009-12-02
Publication date: 2010-09-22
Anticipated expiration: 2019-12-02

Abstract

The utility model discloses a superposed digging/embedding foundation which is characterized in that the foundation comprises a digging foundation and a round-table type embedding foundation, wherein the digging foundation is formed by a main post and a chassis, the round-table type embedding foundation is arranged below the digging foundation; the main post is a cylinder; the upper end of the main post is provided with a foundation bolt; the foundation chassis is positioned below the main post; main reinforced bars are distributed around the main post; the lower ends of the main reinforced bars are anchored in the embedding foundation through the foundation chassis; a plurality of round stirrups are distributed at the upper part and the lower part around the main reinforced bars; and the main post, the foundation chassis and the build-in foundation are superposed into a whole by the embedding foundation. By field in-situ test, the digging part and the embedding foundation part can coordinate and well resist outside load under ultimate bearing capacity; and the superposed digging/embedding foundation can fully utilize the good engineering mechanical performances such as high bearing capacity and little deformation of undisturbed ground foundation, meets the requirement of environment protection in engineering construction and saves material.

Description

Superposed type is drawn the embedding basis

Technical field

The utility model relates to the basic field of high pressure, super-pressure and extra-high voltage power line tower.

Background technology

According to the experience of sending electrical engineering in the past, build-in type basis widespread usage is in the circuit of each electric pressure, this is because the build-in type basis shows good load, durability and economy under the stressed condition of severely-weathered geology, big load, significant for the excavation that reduces the construction period earthwork, the construction equipment that is used for build-in type basis excavation of foundation pit in addition is simpler, general adopt traditional spade, original text or small-sized electric equipment get final product, this can save transportation as facility such as large-scale rigs for the difficult area of high mountain high hill transportation.For build-in type basis, inapplicable tower position, rock bolt type basis is first-selected replacement basic type, it often can save a large amount of concrete and basic steel amount with the heavy excavation basis under the condition, its theory of computation mainly adopts pulls out in the control of bonding force between base concrete and the rock and the method for verification shear of rock bearing capacity is carried out, but shortcoming that should basis pattern maximum is to need rock to be exposed to the face of land and globality is had relatively high expectations and the rock joint crack can not be too big, these all limited should the basis a large amount of uses, because general geology all is soil conditions such as clay in the plains region, and the mountain area also is soil layer with the surface, it is in the majority for the geological conditions of rock down, and rock shows as the trend that alleviates with degree of depth increasing weathering.And digging foundation is direct digging foundation hole in ground, insert reinforcing bar, penetration concrete and the basis that forms, this basis earthwork is less, less to landform and vegetation deterioration, can make full use of the undisturbed soil characteristic, pull out bearing capacity on it to improve, and can reduce the lateral deformation on basis, do not need formwork when casting concrete again, but the reduction of erection time is reduced operating expenses, but the theory of computation of all digging foundations all is to adopt shearing method on the power transmission sequence, this basic pattern is primarily aimed at the cohesive soil geological conditions, and what material usage will be big than rock foundation in its result of calculation is many.

The utility model content

Technical problem to be solved in the utility model provides a kind of drawing and digs and the superimposed environmental protection base of rock build-in; can make full use of undisturbed soil ground bearing capacity height, the little good engineering mechanics performance of distortion; satisfy the environmental protection requirement of engineering construction; especially (for example strained angled tower tower position) more can the economical with materials amount under big load, is convenient to construction.

For solving the problems of the technologies described above, the utility model provides a kind of superposed type to draw the embedding basis, it is characterized in that: comprise the digging foundation of forming by basic principal post and basic chassis, it is the circular platform type Embed based down, the basis principal post is a cylinder, principal post upper end, basis is provided with stone bolt, the chassis, basis is positioned at below the basic principal post, basis principal post circumference disposes main muscle, main muscle lower end anchors in the Embed based by basic chassis, main muscle circumference configuration is some circular stirrups up and down, and basic principal post and basic chassis and Embed based are superimposed as integral body by main muscle.

The utility model has carried out test in situ; but the basis is drawn and is dug part and the collaborative work of basic build-in part under ultimate bearing capacity; resist external load well; can make full use of undisturbed soil ground bearing capacity height, the little good engineering mechanics performance of distortion; satisfy the environmental protection requirement of engineering construction, the economical with materials amount.

Description of drawings

Fig. 1 draws embedding basis elevation for superposed type;

Fig. 2 draws embedding basis A-A sectional drawing for superposed type;

Fig. 3 draws embedding basis B-B sectional drawing for superposed type;

Fig. 4 draws the main muscle processing in embedding basis master drawing for superposed type.

The specific embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model comprises the digging foundation that is made of basic principal post 1 and basic chassis 2, the digging foundation bottom is an Embed based 3, the basis principal post is a cylinder, principal post upper end, basis is provided with stone bolt 6, the chassis, basis is positioned at below the basic principal post, basis principal post circumference disposes main muscle 4, main muscle lower end is run through the anchoring of basic chassis and is gone into Embed based bottom, main muscle circumference configuration is some circular stirrups 5 up and down, main muscle and stirrup colligation or weld together, digging foundation and Embed based are by the moulding of concrete one-time-concreting.

Chassis, basis and basic principal post adopt digging foundation to calculate principle and promptly adopt shearing method, and the bottom adopts Rock Embed based to calculate principle.Digging foundation part and build-in part are resisted the active force that the top iron tower transmits together, wherein the cohesion between the relative shearing of the soil body and Embed based and the rock is born jointly on the surface of shear that formed in the soil body by digging foundation of uplift force and horizontal force, and downforce and horizontal force are born by the ground under digging foundation chassis and the Embed based.

Claims

1. a superposed type is drawn the embedding basis, it is characterized in that: comprise the digging foundation of forming by basic principal post and basic chassis, it is the circular platform type Embed based down, the basis principal post is a cylinder, and basic principal post upper end is provided with stone bolt, and basic chassis is positioned at below the basic principal post, basis principal post circumference disposes main muscle, main muscle lower end anchors in the Embed based by basic chassis, and main muscle circumference configuration is some circular stirrups up and down, and basic principal post and basic chassis and Embed based are superimposed as integral body by main muscle.