CN211666082U

CN211666082U - Built-in prestressed pipe truss structure

Info

Publication number: CN211666082U
Application number: CN201922361682.XU
Authority: CN
Inventors: 宋向东; 徐玉森; 张允川; 崔晓卫
Original assignee: Hangxiao Steel Structure Shandong Co ltd
Current assignee: Hangxiao Steel Structure Shandong Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-13
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a built-in prestressed pipe truss structure, which comprises a truss main body, wherein the truss main body comprises a truss upper chord member, a truss diagonal web member and a truss lower chord member, a plurality of truss diagonal web members are connected between the truss upper chord member and the truss lower chord member, the truss upper chord member and the truss lower chord member are both arc-shaped and are arranged oppositely, a built-in prestressed cable is arranged in the truss lower chord member in a penetrating way, the axis of the built-in prestressed cable is superposed with that of the truss lower chord member, a built-in prestressed cable limiting device is also arranged in the truss lower chord member, the built-in prestressed cable is arranged in the truss lower chord member in a penetrating way and is superposed with that of the truss lower chord member, the truss lower chord member generates pre-pressure by tensioning the built-in prestressed cable, thus providing prestress for the truss system, and the built-in prestressed cable and the truss lower chord member share the lower chord member to share the lower chord axial force according to the rigidity thereof under the loading action stage, the structure has good wind resistance and earthquake resistance.

Description

Built-in prestressed pipe truss structure

Technical Field

The utility model relates to a steel construction specifically is a built-in prestressing force pipe truss structure.

Background

In the current domestic large-span building with a rectangular plane, a pipe truss structure and a beam chord structure are increasingly widely applied due to the economy and the applicability, based on the objective requirements of engineering application and combined with the practical working engineering for many years, a large amount of research work is carried out, the advantages and the disadvantages of the pipe truss structure and the beam chord structure are analyzed and compared, the pipe truss structure is purposefully optimized by using the beam chord concept, and a novel pipe truss structure form, namely a built-in prestressed pipe truss structure, is provided.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model aims to provide an interior concealed prestressing force pipe truss structure to solve above-mentioned problem.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an interior concealed prestressing force pipe truss structure, includes the truss main part, the truss main part includes truss upper chord member, oblique web member of truss and truss lower chord member, many the oblique web member of truss is connected between truss upper chord member and truss lower chord member, truss upper chord member all is the arc and sets up relatively with truss lower chord member, wear to be equipped with built-in prestressing force cable in the truss lower chord member, the axis coincidence of built-in prestressing force cable and truss lower chord member.

In one alternative: and the two ends of the upper chord member and the lower chord member of the truss are respectively and fixedly connected.

In one alternative: the left end of the truss main body is fixedly provided with a left truss support, and the right end of the truss main body is fixedly provided with a right truss support.

In one alternative: the truss upper chord member, the truss diagonal web members and the truss lower chord member are all round steel tubes.

In one alternative: the truss lower chord is characterized in that a built-in prestressed stay rope limiting device is further arranged in the truss lower chord and comprises a sleeve pipe sleeved outside the built-in prestressed stay rope and a plurality of stiffening plates used for fixedly connecting the outer wall of the sleeve pipe and the inner wall of the truss lower chord, and the diameter of the sleeve pipe is larger than that of the built-in prestressed stay rope.

In one alternative: the plurality of stiffening plates are annularly arranged at equal intervals.

Compared with the prior art, the embodiment of the utility model has the following beneficial effects:

the built-in prestressed inhaul cable penetrates through the lower chord of the truss and is superposed with the axis of the lower chord of the truss, the lower chord of the truss generates pre-pressure by tensioning the built-in prestressed inhaul cable, so that prestress is provided for a truss system, and the built-in prestressed inhaul cable and the lower chord of the truss share the lower axle force together according to the rigidity of the built-in prestressed inhaul cable under the loading action stage, so that the structure has good wind resistance; because the built-in prestressed stay rope is protected by the lower chord of the truss, the fire prevention and the rust prevention of the built-in prestressed stay rope are combined into a whole, the engineering cost is saved, and the durability of the built-in prestressed stay rope is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural view of the limiting device of the internal prestressed cable according to the first embodiment of the present invention.

Notations for reference numerals: 1-truss upper chord, 2-truss lower chord, 2-truss diagonal web members, 4-left truss support, 5-built-in prestressed inhaul cable limiting device, 6-built-in prestressed inhaul cable, 7-right truss support, 8-sleeve and 9-stiffening plate.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the drawings or description, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practical applications. The embodiments of the present invention are provided only for illustration, and not for limiting the scope of the present invention. Any obvious and obvious modifications or alterations to the present invention can be made without departing from the spirit and scope of the present invention.

Example 1

Please refer to fig. 1-2, in the embodiment of the present invention, an internal prestressed pipe truss structure includes a truss main body, the truss main body includes a truss upper chord 1, a truss diagonal web member 3 and a truss lower chord 2, a plurality of truss diagonal web members 3 are connected between the truss upper chord 1 and the truss lower chord 2, further, in the embodiment, the truss upper chord 1 and the truss lower chord 2 are both arc-shaped and arranged oppositely, both ends of the truss upper chord 1 and the truss lower chord 2 are respectively and fixedly connected, a left truss support 4 is fixedly installed at the left end of the truss main body, a right truss support 7 is fixedly installed at the right end of the truss main body, the truss main body is fixedly installed by matching the left truss support 4 and the right truss support 7, and the stress of the truss main body is transmitted to the main structure; furthermore, the truss upper chord member 1, the truss diagonal web members 3 and the truss lower chord member 2 are all round steel tubes, so that better stability and bearing capacity can be provided;

furthermore, a built-in prestressed cable 6 penetrates through the lower chord 2 of the truss, the built-in prestressed cable 6 is overlapped with the axis of the lower chord 2 of the truss, a built-in prestressed cable limiting device 5 is further arranged in the lower chord 2 of the truss to avoid direct friction between the built-in prestressed cable 6 and the inner wall of the lower chord 2 of the truss, the built-in prestressed cable limiting device 5 comprises a sleeve 8 sleeved outside the built-in prestressed cable 6 and a plurality of stiffening plates 9 used for fixedly connecting the outer wall of the sleeve 8 and the inner wall of the lower chord 2 of the truss, the diameter of the sleeve 8 is larger than that of the built-in prestressed cable 6, the plurality of stiffening plates 9 are annularly arranged at equal intervals, and the lower chord 2 of the truss generates pre-pressure by tensioning the built-in prestressed cable 6, so that prestress is provided for the truss system.

Example 2

A truss system comprising the concealed prestressed pipe truss structure of embodiment 1.

The utility model discloses a theory of operation is: the built-in prestressed stay cable 6 penetrates through the lower chord 2 of the truss and is superposed with the axis of the lower chord 2 of the truss, the built-in prestressed stay cable 6 is tensioned to enable the lower chord 2 of the truss to generate pre-pressure, so that prestress is provided for a truss system, and in a loading action stage, the built-in prestressed stay cable 6 and the lower chord 2 of the truss share the lower axis force according to the rigidity of the built-in prestressed stay cable, so that the structure has good wind resistance, and the structure is still complete after the built-in prestressed stay cable 6 is withdrawn from working, is obviously beneficial to resisting repeated load like a pipe truss, and has good anti-seismic performance; because the built-in prestressed stay 6 is protected by the lower chord 2 of the truss, the fire prevention and the rust prevention of the built-in prestressed stay 6 are combined into a whole, the engineering cost is saved, and the durability of the built-in prestressed stay 6 is improved.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a built-in prestressing force pipe truss structure, includes the truss main part, the truss main part includes truss upper chord member (1), oblique web member (3) of truss and truss lower chord member (2), many oblique web member (3) of truss is connected between truss upper chord member (1) and truss lower chord member (2), its characterized in that, truss upper chord member (1) all is the arc and sets up relatively with truss lower chord member (2), wear to be equipped with built-in prestressing force cable (6) in truss lower chord member (2), the axis coincidence of built-in prestressing force cable (6) and truss lower chord member (2).

2. The concealed prestressed pipe truss structure according to claim 1, wherein both ends of said truss upper chord (1) and truss lower chord (2) are respectively fixedly connected.

3. The concealed prestressed pipe truss structure according to claim 2, wherein a left truss support (4) is fixedly installed at the left end of the truss main body, and a right truss support (7) is fixedly installed at the right end of the truss main body.

4. The concealed prestressed pipe truss structure according to any one of claims 1-3, wherein said truss upper chord member (1), truss diagonal web members (3) and truss lower chord member (2) are all round steel pipes.

5. The concealed prestressed pipe truss structure according to claim 4, wherein a built-in prestressed cable limiting device (5) is further arranged in the truss lower chord (2), the built-in prestressed cable limiting device (5) comprises a sleeve (8) sleeved outside the built-in prestressed cable (6) and a plurality of stiffening plates (9) for fixedly connecting the outer wall of the sleeve (8) and the inner wall of the truss lower chord (2), and the diameter of the sleeve (8) is larger than that of the built-in prestressed cable (6).

6. The concealed prestressed pipe truss structure according to claim 5, wherein a plurality of said stiffening plates (9) are circumferentially spaced at equal intervals.