CN216515701U

CN216515701U - Miniature stake raft board combination foundation structure

Info

Publication number: CN216515701U
Application number: CN202123117182.5U
Authority: CN
Inventors: 彭文立; 谭海立; 刘超凤; 任荣明; 蓝旭昭; 王涛; 丁千夏
Original assignee: Hualan Design Group Co ltd
Current assignee: Hualan Design Group Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-13
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a micro-pile raft plate combined foundation structure, which is applied to a foundation stratum required by a raft plate foundation and comprises micro piles, wherein micro pile holes are drilled in the bottom surface of a foundation through a drilling machine, so that the micro piles are inserted into the micro pile holes; be provided with raft foundation reinforcing bar in the raft foundation, and raft foundation reinforcing bar forms the reinforcing bar net through the ligature form, and simultaneously, raft foundation reinforcing bar and micro pile welding, and form through concreting preparation, this kind of micro pile raft foundation structure, through the combination of raft foundation and micro pile, be applicable to the less condition that can not set up the enlarged basis of shallow foundation bearing capacity and can not set up large-scale deep foundation because the condition restriction, wherein raft foundation accessible adjustment raft board size is in order to adapt to the less condition of shallow foundation bearing capacity, and the micro pile under the raft foundation then can make structure foundation and foundation anchor better, provide sufficient withdrawal resistance in order to resist the overturning force for the structure, the lectotype provides a new optional pattern for structure foundation.

Description

Miniature stake raft board combination foundation structure

Technical Field

The utility model belongs to the technical field of structural engineering, and particularly relates to a micro pile-raft plate combined foundation structure.

Background

The foundation of the common bridge and building structure comprises a pile foundation and an enlarged foundation, wherein the pile foundation is suitable for a bridge site with weak shallow soil and large bearing capacity of deep soil, and the enlarged foundation is suitable for a bridge site with large bearing capacity of shallow soil; raft foundations are commonly used for foundations of industrial and civil buildings with weak bearing capacity of shallow foundations; the micro-pile is a foundation reinforcement processing mode.

When the bearing capacity of the shallow foundation is small and the foundation cannot be enlarged and the deep foundation (pile foundation) cannot be arranged due to the fact that other structures (such as anchor cables, basements, underground comprehensive pipe galleries and the like) exist in the deep foundation, a novel foundation form is provided in order to meet the anti-overturning capacity of a bridge or a building structure, namely, a novel micro pile and raft foundation combination foundation is formed by combining micro piles and the raft foundation.

SUMMERY OF THE UTILITY MODEL

To solve the problems raised in the background art described above. The utility model provides a micro pile-raft combined foundation structure which has the characteristics.

In order to achieve the purpose, the utility model provides the following technical scheme: a combined foundation structure of miniature piles and raft for the foundation layer of raft foundation is composed of a base, a pile-raft, a raft-raft foundation, a base, and a foundation layer

A micro pile, which is inserted into the micro pile hole by drilling the micro pile hole on the bottom surface at the foundation through a drilling machine;

raft foundation, be provided with raft foundation reinforcing bar in the raft foundation, and raft foundation reinforcing bar forms the reinforcing bar net through the ligature form, simultaneously, raft foundation reinforcing bar and micro-pile welding to form through concreting preparation.

Preferably, the micro pile is formed by pouring the positioning steel bars and the concrete filler, the positioning steel bars are inserted into the micro pile hole, and the concrete filler is injected into the micro pile hole for cooling and forming.

Preferably, the micro piles are uniformly distributed in the foundation in a quincunx shape and are fixedly connected with the raft foundation.

Compared with the prior art, the utility model has the beneficial effects that: this kind of miniature stake raft board combination foundation structure, through the combination of raft foundation and miniature stake, be applicable to the less condition that can not set up the enlarged basis and can not set up large-scale deep foundation because the condition restriction of shallow foundation bearing capacity, wherein raft foundation accessible adjustment raft board size is in order to adapt to the less condition of shallow foundation bearing capacity, and the miniature stake under the raft foundation then can make structure basis and ground anchor better, provide sufficient withdrawal resistance in order to resist the overturning force for the structure, provide a new optional pattern for structure basis lectotype.

Drawings

FIG. 1 is a schematic side sectional view of the present invention;

fig. 2 is a schematic view of a raft foundation of the utility model in a top view.

In the figure: 1. a raft foundation; 2. raft foundation steel bars; 3. micro-piles; 4. a concrete filler; 5. and (5) positioning the reinforcing steel bars.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides the following technical solutions: a combined foundation structure of miniature piles and raft for the foundation layer of raft foundation is composed of a base, a pile-raft, a raft-raft foundation, a base, and a foundation layer

A micro pile 3, which is inserted into the micro pile hole by drilling a micro pile hole on the bottom surface at the foundation through a drilling machine;

raft foundation 1, be provided with raft foundation reinforcing bar 2 in raft foundation 1, and raft foundation reinforcing bar 2 forms the reinforcing bar net through the ligature form, simultaneously, raft

foundation reinforcing bar

2 and 3 welding of micro-pile to form through the concreting preparation.

When the micro-pile raft combined foundation structure is used, the micro-pile raft combined foundation structure is divided into an upper part and a lower part, the upper part is a raft foundation, the lower part of the raft foundation is a micro-pile, the size, the concrete strength and the reinforcing bars of a plate body of the raft foundation and the length, the reinforcing bars, the grouting strength and the like of the micro-pile are determined by calculating the geological conditions and the structural stress of a site where the foundation is located, and after the concrete of the raft foundation is poured, the upper part and the lower part form a whole and bear the force jointly.

The micro pile 3 comprises a positioning steel bar 5 and a concrete filler 4, and is formed by pouring, the positioning steel bar 5 is inserted into a micro pile hole, and the concrete filler 4 is injected into the micro pile hole for cooling and forming;

when in use, after the raft foundation concrete is poured, the upper part and the lower part form a whole and are stressed together.

The micro piles 3 are uniformly distributed in the foundation in a quincunx shape and are fixedly connected with the raft foundation 1;

the foundation structure is suitable for the condition that the bearing capacity of a shallow foundation is small, an enlarged foundation cannot be arranged, and a large-scale deep foundation cannot be arranged due to condition limitation, wherein the raft foundation can adjust the size of the raft plate to adapt to the condition that the bearing capacity of the shallow foundation is small, and the micro-piles under the raft foundation can anchor the structural foundation and the foundation better.

The working principle and the using process of the utility model are as follows: when the method is used, firstly, a stratum meeting the requirements of a raft foundation is excavated at the position of the foundation, the position of the positioning steel bar 5 is set out, a miniature pile hole is drilled in the ground by using a small drilling machine, the positioning steel bar 5 of the miniature pile is placed after the hole is cleaned, then, concrete filler 4 is injected into the hole, a raft foundation outer mold is erected after the grouting in the miniature pile 3 reaches the design strength, the steel bars arranged in the raft are arranged, the raft steel bar and the miniature pile extend out of a steel bar bundle (binding or welding) of the raft foundation, concrete of the raft foundation 1 is poured, and the mold is removed after the concrete strength reaches the design requirements.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a miniature stake raft board combination foundation structure which characterized in that: applied to the foundation stratum required by a raft foundation, comprising

A micro pile (3) which is inserted into the micro pile hole by drilling a micro pile hole on the bottom surface at the foundation by a drilling machine;

raft foundation (1), be provided with raft foundation reinforcing bar (2) in raft foundation (1), and raft foundation reinforcing bar (2) forms the reinforcing bar net through the ligature form, simultaneously, raft foundation reinforcing bar (2) and micro pile (3) welding to form through pouring the concrete preparation.

2. The micro-piled raft combination foundation structure of claim 1, wherein: the micro pile (3) is formed by pouring positioning steel bars (5) and concrete fillers (4), the positioning steel bars (5) are inserted into the micro pile hole, and then the concrete fillers (4) are injected into the micro pile hole for cooling and forming.

3. The micro-piled raft combination foundation structure of claim 1, wherein: the micro piles (3) are uniformly distributed in the foundation in a quincunx shape and are fixedly connected with the raft foundation (1).