CN112746674A

CN112746674A - Spoke type tensioning structure of circular plane closed coal shed

Info

Publication number: CN112746674A
Application number: CN201911047267.5A
Authority: CN
Inventors: 陈婷; 朱滢政; 李竞远; 尹新伟; 闫海鹰
Original assignee: Datang Environment Industry Group Co Ltd
Current assignee: Datang Environment Industry Group Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-05-04

Abstract

The utility model provides a spoke formula tension structure of circular plane closed coal canopy belongs to structural engineering technical field. It adopts "single outer loop, two inner ring" formula structures, and this spoke formula tension structure mainly includes: the device comprises an outer pressure ring, a vertical supporting member, a flying column and a radiation cable truss; the radial cable truss comprises an upper chord cable, a lower chord cable and a linking member, wherein the chord cables are arranged in a radial double-layer mode and are prestressed, one end of each chord cable is connected with the outer pressure ring, the other end of each chord cable is connected with the flying column, and the linking member is arranged between the upper chord cable and the lower chord cable; two ends of the flying column are respectively connected with an upper chord cable and a lower chord cable, and the elevation of the lower end of the flying column needs to meet the minimum clearance requirement required by the operation of coal yard equipment; the vertical supporting member adopts a cantilever column and is arranged on the circumference of a circular plane, the upper end of the column is hinged with the outer pressure ring, and the lower end of the column is rigidly connected with the foundation. The structure has the advantages of high space utilization rate, large span, light structure dead weight, short construction period, quick construction forming and the like, and is an economic and efficient novel shed sealing structure.

Description

Spoke type tensioning structure of circular plane closed coal shed

Technical Field

The utility model relates to a spoke formula tension structure of circular plane closed coal canopy belongs to structural engineering technical field.

Background

In recent years, in order to enhance green development and clean utilization of energy and fully implement ecological civilized construction, the original open-air type coal piling yard is difficult to meet the requirements, so that the requirement of totally-enclosed construction is put forward for the dry coal shed of the power plant. Through the construction of closed coal canopy, can effectively reduce the emission of coal dust, improve the atmospheric environment quality, control raise dust and haze problem.

The construction of the closed coal shed in China starts from the eighties of the twentieth century, the early structural form mainly adopts a plane arch structure and a plane truss structure, and the space grid structure mainly adopting a net rack and a net shell in the late nineties is widely applied to dry coal shed projects. The circular plane coal shed is also a common coal shed form, the existing engineering mainly adopts a spherical reticulated shell space structure, the structural form is high in steel consumption and long in construction period, and therefore, a space structural form which is suitable for a circular plane, can span a large space and has high bearing efficiency is required to be searched. The flexible member such as guy cable, membrane material and the like and the rigid structure are complemented to form a 'hybrid' structure, which can have the advantages of both, so that the flexible member becomes one of the development directions of the closed coal shed structure.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

The utility model provides a spoke formula tension structure of circular plane closed coal canopy adopts "single outer loop, two inner ring" formula structures, contains: the device comprises an outer pressure ring 1, a vertical supporting member 2, a flying column 3 and a radiation cable truss 4; the radiation cable truss 4 comprises an upper chord 5, a lower chord 6 and a connecting member 7, the chords are arranged in a radiation type double-layer mode, one end of each chord is connected with the outer pressure ring 1, the other end of each chord is connected with the flying column 3, and the connecting member 7 is arranged between the upper chord 5 and the lower chord 6; the two ends of the flying column 3 are respectively connected with an upper chord cable 5 and a lower chord cable 6, and the elevation of the lower end of the flying column needs to meet the minimum clearance requirement required by the operation of coal yard equipment; the vertical supporting member 2 is a cantilever column and is arranged on the circumference of a circular plane, the upper end of the column is hinged with the outer pressure ring 1, and the lower end of the column is rigidly connected with the foundation.

In the spoke type tensioning structure, the outer ring 1 may be a circumferential solid web beam (rectangular steel pipe, circular steel pipe, or the like), a circumferential lattice beam, a circumferential steel pipe concrete beam, or the like.

In the spoke type tensioning structure, when the radial cable truss 4 is in an outward convex type, a compression bar is selected as a connecting component 7; when the radial cable truss 4 is in a concave type, a pulling cable is selected as the connecting component 7.

In the spoke type tensioning structure, the vertical supporting member 2 is in a cantilever column structure, and a concrete column, a steel column or a steel pipe concrete column and the like can be adopted.

In the spoke type tensioning structure, the middle flying column 3 is in a shuttle shape.

The spoke type tensioning structure of the circular plane closed coal shed mainly has the following advantages:

(1) the spoke type tensioning structure belongs to an integral tensioning structure, has light structure dead weight, can fully utilize the material characteristics of flexible and rigid members through shape finding analysis, connects the inner and outer rigid members through the oblique radiation double-layer prestressed stay rope, forms an integral cooperative stress mechanism of the structure, and achieves the effects of saving materials and improving economic benefits.

(2) Compared with pure rigid structures such as spherical reticulated shells, the spoke type tensioning structure has the advantages of a flexible structure and a rigid structure, and the structural rigidity and the stability of the spoke type tensioning structure are obviously improved. When bearing the upper load, the load is firstly transmitted to the upper chord by the covered membrane material, then the upper chord is transmitted to the lower chord by the connecting component, and then the upper chord is transmitted to the outer annular truss to be pressed. The rigid member stress of the cable system structure and the inner ring and the outer ring realizes self balance, and only the self weight of the structure is transmitted to the supporting column.

(3) The connecting component arranged between the upper chord cable and the lower chord cable of the spoke type tensioning structure can provide elastic support for the upper radial cable and the lower radial cable, reduce the deformation and displacement of the cable structure and improve the static performance of the cable structure; and a force transmission channel can be provided, so that the upper load can be transmitted to the lower chord cable from the upper chord cable through the component, and the integral stress is further realized.

(4) The supporting column of the spoke type tensioning structure only needs to be arranged on the outer ring of the structure, does not need a set point for supporting inside, belongs to a column-free structure, can greatly improve the space utilization degree of the structure, realizes super-large space and super-large span, and easily meets the requirement of functions on clearance.

(5) The structure form can be folded into a 'mechanism' for tensioning construction, so that the integral installation and forming of the structure are conveniently controlled; meanwhile, the structural member can be completely produced in a standardized manner in a factory and then subjected to on-site assembly construction, so that the construction period and the labor cost can be saved, and the construction precision is improved.

Drawings

Fig. 1 is a front sectional view of a spoke type tension structure of a circular plane closed coal shed: adopting an annular lattice type beam;

FIG. 2 is a front sectional view of a spoke type tension structure of a circular plane closed coal shed: adopting an annular steel pipe concrete beam;

FIG. 3 is a top view of a spoke type tension structure of a circular plane closed coal shed;

FIG. 4 is a schematic view of a radial cable truss;

fig. 5 is an elevation section view of a radial cable truss: the arrangement of an outward convex mode is adopted; and

fig. 6 is an elevation section view of a radial cable truss: an 'inner concave type' arrangement is adopted.

Detailed Description

Embodiments of the present disclosure will be described in detail below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, a spoke type tension structure of a circular plane closed coal shed comprises the following components:

1-outer pressure ring;

2-vertical support members;

3-flying column;

4-radial cable truss;

5-upper chord cable;

6-lower chord cable;

7-connecting member, comprising two types: 7-1-compression bar, 7-2-inhaul cable;

as shown in fig. 1 to 3, a spoke type tension structure of a circular plane closed coal shed mainly comprises: the device comprises an outer pressure ring 1, a vertical supporting member 2, a flying column 3 and a radiation cable truss 4; the radiation cable truss comprises an upper chord 5, a lower chord 6 and a connecting member 7, the chords are arranged in a radiation type double-layer mode, one end of each chord is connected with the outer pressure ring 1, the other end of each chord is connected with the flying column 3, and the connecting member 7 is arranged between the upper chord 5 and the lower chord 6; two ends of the flying column 3 are respectively connected with an upper chord cable 5 and a lower chord cable 6; the vertical supporting member 2 is a cantilever column and is arranged on the circumference of a circular plane, the upper end of the column is hinged with the outer pressure ring 1, and the lower end of the column is rigidly connected with the foundation.

As shown in fig. 1 and 2, in the spoke type tensioning structure, the outer ring 1 may be a circumferential lattice beam or a circumferential steel pipe concrete beam.

As shown in fig. 5 and 6, the middle flying pillar 3 is in a shuttle shape; when the integral structure of the connecting component 7 in the radiation cable truss 4 is in an outward convex arrangement, a pressure lever 7-1 is selected; when the whole structure is arranged in a concave manner, the inhaul cable 7-2 is selected.

Claims

1. The utility model provides a spoke formula tension structure of circular plane closed coal canopy adopts "single outer loop, two inner ring" formula structures, its characterized in that, spoke formula tension structure mainly includes: the device comprises an outer pressure ring (1), a vertical supporting member (2), a flying column (3) and a radial cable truss (4); the radiation cable truss (4) comprises an upper chord cable (5), a lower chord cable (6) and a linking member (7), the upper chord cable (5) and the lower chord cable (6) are arranged in a radiation type double-layer mode, one end of the upper chord cable is connected with the outer pressure ring (1), the other end of the upper chord cable is connected with the flying column (3), and the linking member (7) is arranged between the upper chord cable and the lower chord cable; two ends of the flying column (3) are respectively connected with an upper chord cable (5) and a lower chord cable (6); the vertical supporting member (2) is a cantilever column and is arranged on the circumference of a circular plane, the upper end of the column is hinged with the outer pressure ring (1), and the lower end of the column is rigidly connected with the foundation.

2. Spoke type tensioning structure according to claim 1, characterized in that the outer ring (1) can be a hoop solid web beam (rectangular steel pipe, round steel pipe, etc.), a hoop lattice beam or a hoop steel pipe concrete beam, etc.

3. Spoke-type tensioning structure according to claim 1, wherein the vertical support members (2) are of cantilever column construction, such as concrete columns, steel columns or steel tube concrete columns.

4. Spoke tensioning construction according to claim 1, characterized in that the upper chord (5) and the lower chord (6) are prestressed.

5. Spoke tensioning construction according to claim 1, characterized in that the radial cable trusses (4) can be "male" or "female", when they are "male", compression bars are chosen as the linking members (7); when it is 'concave', the pulling cable is selected as the connecting component (7).

6. Spoke tensioning arrangement according to claim 1, wherein the middle flying pillar (3) is shuttle-shaped.