CN217735014U - Back-to-back direct current converter station valve hall structure in coastal region - Google Patents

Abstract

The utility model discloses a coastal area is direct current converter station valve room structure back to back in electric power civil engineering technical field, including vertical bearing structure and roofing structure, vertical bearing structure includes prevents hot wall and bearing shear force wall, prevent that hot wall and bearing shear force wall are separated through the hidden column between, roofing structure includes the roof truss and sets up the steel bar truss building carrier plate on the roof truss, the utility model discloses a through setting up hidden column and separating bearing shear force wall and prevent hot wall, under the earthquake action, can effectively reduce prevent that hot wall tip stress takes place to destroy; the roof structure adopts the steel bar truss floor support plate, so that the wind resistance, the seepage resistance and the corrosion resistance can be effectively realized.

Description

Back-to-back direct current converter station valve hall structure in coastal region

Technical Field

The utility model relates to an electric power civil engineering technical field specifically is a coastal area direct current converter station valve room structure back to back.

Background

The valve hall is a core building of the direct current converter station, the back-to-back direct current converter valve hall structure is composed of a vertical bearing structure and a roof structure, and the vertical bearing structure mainly comprises a mixed structure system, a steel bent structure and a reinforced concrete bent structure system. The mixed structure system adopts a reinforced concrete shear wall as a vertical bearing structure and a lateral force resisting system of the valve hall and also serves as a fire wall of the converter transformer of the valve hall. The steel bent frame structure system is formed by hinging a steel roof truss and a column, and is longitudinally composed of the column, an inter-column support and a wall beam. In the reinforced concrete bent structure system, the vertical structural members adopt concrete columns, and the steel roof truss is hinged with the tops of the concrete columns to form a bent structure. The seismic intensity of coastal areas is relatively high, and for a mixed structure system, because the fire walls on two sides are relatively long, shear walls at the end parts of the two sides of the conversion fire walls are easy to damage under the action of strong shock; the built back-to-back direct current converter station valve hall roof structure generally adopts a roof structure system with purlins and consists of a composite profiled steel sheet roof plate and a cold-bending thin-wall steel purline.

The seismic intensity of coastal areas is relatively high, and for a mixed structure system, because the fire walls on the two sides are relatively long, shear walls at the end parts of the two side conversion fire walls are easy to damage under the action of strong shock. For the steel bent frame scheme, the steel section is relatively small, the structural flexibility is large, the deformation is large under the action of a horizontal earthquake, and the longitudinal and transverse rigidity of the structure needs to be enhanced by strengthening the supports among columns and the upper and lower chord of the roof truss. For the concrete structure scheme, the section of the concrete column is larger, so that the building area and the land cost are increased to meet the requirement of a plane clear space.

For coastal areas, typhoon influence needs to be considered, the designed wind pressure is large, water vapor in the air has certain corrosivity to steel, and meanwhile, due to the fact that electronic devices in a valve body have high requirements on roof water resistance, wind resistance, water resistance and corrosion resistance need to be considered in the design of the roof. Because the composite profiled steel sheet roof panel has light dead weight, large flexibility and large wind area, the roof panel is easy to be lifted under the repeated action of wind suction force and wind pressure, thereby influencing the normal operation of the converter station. Because the appearance of the roof hidden buckle type profiled steel sheet is not regular, certain gaps exist between profiled steel sheets at positions such as valve hall ridge and cornice edge belt and color steel sheets of edge banding angle steel, if proper plugging measures are not taken for the gaps, outdoor air can enter a cavity inside the enclosure structure through the gaps to form large wind pressure and act on the inner surface of the profiled steel sheet, the enclosure structure is damaged, typhoon usually accompanies strong rainfall, and roof seepage easily occurs to the composite profiled steel sheet roof panel.

Based on this, the utility model designs a coastal area direct current converter station valve room structure back to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coastal area is direct current converter station valve room structure back to what provide prevents that hot wall is longer in solving above-mentioned background, and under the strong shock effect, the both sides change of current prevents that hot wall tip shear force wall easily takes place the problem of destruction.

For coastal areas, the designed wind pressure is large, water vapor in the air has certain corrosivity to steel, and meanwhile, because electrical equipment in a valve hall has high requirements on roof waterproofing, the roof structure needs to consider the problems of wind prevention, seepage prevention and corrosion prevention.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a coastal area direct current converter station valve room structure back-to-back, includes roofing structure and is used for supporting roofing structure's vertical bearing structure, vertical bearing structure is including preventing hot wall and bearing shear force wall, prevent connecting through the hidden column between hot wall and the bearing shear force wall, roofing structure includes the roof truss and sets up the steel bar truss building carrier plate on the roof truss, the roof truss top is provided with a plurality of steel secondary beams, steel bar truss building carrier plate sets up at steel secondary beam top, bearing shear force wall top sets up the reinforced concrete bracket, pre-buried rag bolt in the reinforced concrete bracket, the roof truss end post of roof truss passes through rag bolt and is connected with the reinforced concrete bracket.

Preferably, the roof truss comprises an upper chord and a lower chord, the upper chord and the lower chord are connected through a vertical chord and an oblique chord, and two ends of the upper chord and two ends of the lower chord are respectively connected with the end columns of the roof truss on the corresponding sides.

Preferably, the secondary steel beam is arranged at the joint of the inclined chord and the vertical chord, and the secondary steel beam is connected with the upper chord of the roof truss through a bolt.

Preferably, the reinforced concrete corbel is provided with a shear groove, and the roof truss end post is provided with a shear key matched with the shear groove.

Preferably, the steel bar truss floor bearing plate is connected with the steel secondary beam through a stud.

Preferably, the roof truss is made of a steel structure.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model reduces the stress of the end part of the firewall and avoids the firewall from being damaged under the action of earthquake by arranging the hidden columns to divide the bearing shear wall and the firewall; the roof structure adopts the steel bar truss floor support plate, so that wind resistance, seepage prevention and corrosion prevention can be effectively realized; the roof truss steel secondary beam is connected with the roof truss through bolts, and the upper chord and the lower chord are mainly subjected to axial force, so that the stress of the upper chord and the lower chord is uniform.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a valve hall according to the present invention;

FIG. 2 is a schematic view of the roof structure of the present invention;

FIG. 3 is a schematic structural view of a reinforced concrete corbel and its mating parts;

FIG. 4 is a schematic view of the roof truss structure of the present invention;

fig. 5 is a partially enlarged structural view of a portion a of fig. 2.

1. A firewall; 2. a load-bearing shear wall; 3. a hidden column; 4. a reinforced concrete corbel; 5. a steel bar truss floor bearing plate; 6. a hoisting beam; 7. a roof truss; 8. a steel secondary beam; 9. an upper chord; 10. a lower chord; 11. anchor bolts; 12. a shear groove; 13. a shear key; 14. a roof truss end post; 15. and a diagonal chord member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

The utility model discloses an embodiment:

the coastal area earthquake intensity is relatively high, typhoon influence needs to be considered, the wind pressure is high, and water vapor in the air has certain corrosivity on steel.

As shown in fig. 1-3, the roof structure comprises a vertical bearing structure and a roof structure, wherein the vertical bearing structure comprises a bearing shear wall 2, a firewall 1 and a hidden column 3, and the bearing shear wall 2 is separated from the firewall 1 by the hidden column 3, so that the length of the bearing shear wall 2 can be effectively reduced.

The roof structure comprises a steel structure roof truss 7, the cross section of the roof truss 7 is trapezoidal or arched, and the like, as shown in fig. 4, the roof truss 7 comprises an upper chord 9, a lower chord 10 and roof truss end pillars 14 which are positioned at two ends of the upper chord 9 and the lower chord 10 and are connected with the upper chord 9 and the lower chord 10, and the upper chord 9 and the lower chord 10 are connected into a whole through a vertical chord and an oblique chord 15; a plurality of steel sub-beams 8 are arranged along the length extension direction of the upper chord 9.

As shown in fig. 5, the secondary steel girder 8 is arranged at a node where the upper chord 9 and/or the vertical chord are connected, so that the upper chord 9 and the lower chord 10 transmit horizontal force to mainly bear axial force; the upper chord 9 is prevented from bearing bending moment distortion.

Steel secondary beam 8 passes through bolt fixed mounting at last chord 9 top, and steel bar truss building carrier plate 5 makes the biography power route simpler through this setting through stud and 8 fixed connection of steel secondary beam.

The embedded columns in the shear wall are one form of edge members and mainly play a role in bearing tensile and compressive stresses caused by bending moment when the bending moment acts in the plane of the wall.

The reinforced concrete corbel 4 is arranged at the top of the bearing shear wall 2, foundation bolts 11 are embedded in the reinforced concrete corbel 4, a shear groove 12 is formed in the top of the reinforced concrete corbel 4, after a shear key 13 of a roof truss end column 14 of the roof truss 7 is inserted into the shear groove 12, the roof truss end column 14 and the reinforced concrete corbel 4 are fixedly connected into a whole through matching of parts such as nuts and the like with the foundation bolts 11, the shear key 13 and the shear groove 12 are matched to bear longitudinal shear force on an interface between the roof truss end column 14 and the reinforced concrete corbel 4, relative sliding between the two is resisted, and the roof truss 7 and the shear wall 2 are guaranteed to act together.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a coastal area direct current converter station valve room structure back-to-back, includes roofing structure and is used for supporting roofing structure's vertical bearing structure, its characterized in that: vertical bearing structure is including preventing hot wall (1) and bearing shear force wall (2), prevent separating through hidden post (3) between hot wall (1) and the bearing shear force wall (2), the roofing structure includes roof truss (7) and sets up steel bar truss building carrier plate (5) on roof truss (7), roof truss (7) top is provided with a plurality of steel secondary beam (8), steel bar truss building carrier plate (5) set up at steel secondary beam (8) top, bearing shear force wall (2) top sets up reinforced concrete bracket (4), pre-buried rag bolt (11) in reinforced concrete bracket (4), roof truss end post (14) of roof truss (7) are connected with reinforced concrete bracket (4) through rag bolt (11).

2. The coastal area back-to-back direct current converter station valve hall structure of claim 1, wherein: the roof truss (7) comprises an upper chord (9) and a lower chord (10), the upper chord (9) and the lower chord (10) are connected through a vertical chord and an oblique chord (15), and two ends of the upper chord (9) and two ends of the lower chord (10) are respectively connected with the end columns (14) of the roof truss on the corresponding sides.

3. The coastal area back-to-back direct current converter station valve hall structure of claim 1, wherein: the secondary steel beam (8) is arranged at the joint of the inclined chord (15) and the vertical chord, and the secondary steel beam (8) is connected with the upper chord (9) of the roof truss (7) through bolts.

4. The coastal area back-to-back direct current converter station valve hall structure of claim 1, wherein: the reinforced concrete corbel (4) is provided with a shear groove (12), and the roof truss end post (14) is provided with a shear key (13) matched with the shear groove (12).

5. The coastal area back-to-back direct current converter station valve hall structure of claim 1, wherein: the steel bar truss floor bearing plate (5) is connected with the steel secondary beam (8) through a stud.

6. The coastal area back-to-back direct current converter station valve hall structure of claim 1, wherein: the roof truss (7) is made of a steel structure.

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