CN212317544U

CN212317544U - A post connection structure about newly-built basis for expanding underground space

Info

Publication number: CN212317544U
Application number: CN202020138134.0U
Authority: CN
Inventors: 高作平; 周剑波; 廖杰洪; 张畅; 吴博; 卢凌岳
Original assignee: Wuda Jucheng Structure Co ltd
Current assignee: Wuda Jucheng Structure Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2021-01-08
Anticipated expiration: 2030-01-21

Abstract

The utility model provides a post connection structure about newly-built basis for expanding underground space, includes relative superstructure post (1) and the basement steel core concrete post (2) that increases that set up, four steel sheets (3) that end to end have pre-buried all around on superstructure post (1) lower part and the basement steel core concrete post (2) upper portion that increases, the space that these four steel sheets (3) enclose is inside to be pour high-strength inorganic grout material (4), and basement steel core concrete post (2) and four steel sheets (3) weld into wholly. The method is convenient to implement, and can ensure reliable connection and force transmission between the upper column and the lower column.

Description

A post connection structure about newly-built basis for expanding underground space

Technical Field

The utility model relates to a connection structure, more specifically the utility model relates to a post connection structure about new-built basis for expanding underground space that says so.

Background

With the development of building industry, the concept of building storey-adding design in modern society has become a topic that is more generally concerned by industrial people. The house floor-adding has the advantages of no land occupation, less investment, quick effect, capability of quickly solving the problem of lacking houses and the like, and is particularly suitable for the national conditions of China, so that a great amount of old house floor-adding transformation is carried out in China in recent years, and good economic benefit and success are achieved.

At present, in the construction process of expanding the underground space of a building by mainly replacing a pile foundation support, the connection between an upper structure column and a newly-added basement column is difficult in the construction technology. Meanwhile, due to the key nodes, if the common bar planting connection method is adopted, the construction is difficult at the bottom of the foundation, and great potential safety hazards exist.

Disclosure of Invention

An object of the utility model is to the above-mentioned problem that exists among the prior art, a column connection structure about newly-built basis for expanding underground space is provided.

In order to achieve the above object, the technical solution of the present invention is: the utility model provides a post connection structure about newly-built basis for expanding underground space, includes the basement steel core concrete column that the superstructure post that sets up relatively increases, there are four steel sheets end to end around superstructure post lower part and the basement steel core concrete column upper portion that increases newly-built, and the space that this four steel sheets enclose is inside to be pour to have high-strength inorganic grout material, and basement steel core concrete column and four steel sheets weld into wholly.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model solves the connection problem between the upper structure column of the newly built foundation and the newly added basement steel pipe concrete column in the construction process of expanding the underground space of the building by mainly replacing the pile foundation support; and the method is convenient to implement and can ensure reliable connection and force transmission between the upper column and the lower column.

Drawings

Fig. 1 is the utility model discloses in when newly-built foundation pile foundation underpins upper and lower post connection structure chart.

Figure 2 is the utility model discloses well basement beam slab pours and accomplishes the back and goes up lower column structure chart.

Figure 3 is the utility model discloses well basement steel core concrete column cross-sectional view.

In the figure, superstructure post 1, basement steel core concrete column 2, steel sheet 3, newly-increased pile foundation cushion cap 4, high-strength inorganic grouting material 5.

Detailed Description

The invention is described in further detail below with reference to the following description of the drawings and the detailed description.

Referring to fig. 1 to 3, a newly-built foundation upper and lower column connection structure for expanding an underground space, which is used for connecting an upper structure column 1 and a basement steel pipe concrete column 2 after the pile foundation is underpinned and the basement steel pipe concrete column 2 is poured in the construction process of expanding the underground space of a building; the concrete column comprises an upper structure column 1 and a newly-added basement steel tube concrete column 2 which are oppositely arranged, four steel plates 3 which are connected end to end are pre-buried around the lower part of the upper structure column 1 and the upper part of the newly-added basement steel tube concrete column 2, high-strength inorganic grouting materials 4 are poured in the space surrounded by the four steel plates 3, and the basement steel tube concrete column 2 and the four steel plates 3 are welded into a whole.

Referring to fig. 1 to 3, a method for connecting upper and lower columns of a newly-built foundation for expanding an underground space, comprising the steps of:

firstly, before a newly-added pile foundation bearing platform 4 is poured, four steel plates 3 which are connected end to end are pre-buried around the position of an upper structural column 1 corresponding to a newly-added basement steel pipe concrete column 2.

And step two, pouring a newly-added pile foundation bearing platform 4, enabling the steel plate 3 to penetrate through the newly-added pile foundation bearing platform 4, and then pouring a high-strength inorganic grouting material 5 in a space enclosed by the four pieces of plate steel 3.

And step three, after the pile foundation construction is completed, when the basement steel pipe concrete column 2 is poured, welding the basement steel pipe concrete column 2 and the four steel plates 3 into a whole, and forming integral stress between the upper structure column 1 and the basement steel pipe concrete column 2.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, above-mentioned structure should all be regarded as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a post connection structure about newly-built basis for expanding underground space which characterized in that: including superstructure post (1) and the basement steel core concrete post (2) that newly increases that set up relatively, pre-buried four steel sheets (3) that have end to end all around superstructure post (1) lower part and the basement steel core concrete post (2) upper portion that newly increases, the space that this four steel sheets (3) enclose is inside to be pour has high-strength inorganic grout material (4), and basement steel core concrete post (2) and four steel sheets (3) weld into whole.