CN104712091A - Suspended ceiling structure of long span underground powerhouse and construction method thereof - Google Patents
Suspended ceiling structure of long span underground powerhouse and construction method thereof Download PDFInfo
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- CN104712091A CN104712091A CN201510082333.8A CN201510082333A CN104712091A CN 104712091 A CN104712091 A CN 104712091A CN 201510082333 A CN201510082333 A CN 201510082333A CN 104712091 A CN104712091 A CN 104712091A
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Abstract
The invention discloses a suspended ceiling structure of a long span underground powerhouse and a construction method thereof. The suspended ceiling structure of the long span underground powerhouse comprises two equilong rock anchor beams which are constructed and completed are located on two sides of an upstream and a downstream, a steal arched beam is located between the two rock anchor beams and stretches across in the upstream and downstream directions, an arched waterproof layer purlin support and an arched waterproof layer purlin strip are supported at the top flange of the steal arched beam, and an arched waterproof board is fixed to the arched waterproof layer purlin strip; a plurality of steel hanging rings and steel hanging rods are hung on the bottom flange of the steal arched beam, a main runner of a horizontal decorating layer is hung under the steel hanging rods, and a horizontal decorating layer purlin strip is fixed under the main runner; a fixed decorating board is installed on the lower surface of the horizontal decorating layer purlin strip, a plurality of air conduits are arranged in space between the horizontal decorating layer and an arched waterproof layer, and a plurality of maintenance trestle roads along cliffs are installed on the upper surface of the main runner. The steel arched beam and all steel components can be conveyed to a site to install after being processed, manufactured and completed in a factory, the construction is convenient, and the construction period is shortened. The water seepage of a powerhouse top arch is drained to an upstream and downstream side wall drainage ditch from an upper layer of the waterproof board, the problem that the top arch leaks water is solved, a decorating role of a lower layer of the horizontal decorating layer is played, and the operating requirement of power station is met.
Description
Technical field
The invention discloses a kind of ceiling structure and construction method thereof, be especially applicable to ceiling structure and the construction method thereof of the cavern of the large span such as main building in underground power house, main transformer hole.
Background technology
In the layout of Main Underground factory building, generally in the space that factory building furred ceiling and crown crag spray between anchor layer, arrange the equipment such as ventilating duct, lighting, air-conditioning water pipe.Because current factory building crown support form adopts steel bar concrete combined bolting and shotcrete usually, although beaten drain hole in the massif of factory building crown, but also keep away unavoidable crown crag and have infiltration, let alone directly to drip to generator floor in main building if do not taken measures, not only affect the operation in power station, What is more can cause the major accidents such as electromechanical equipment short circuit, fire, directly threatens the life security of employee and the property safety of country.In addition, due to crown spray anchor layer surface irregularity, if do not processed also unsightly.So the impact that underground power house furred ceiling can not only prevent crown from seeping water on equipment and production, the effect of beautiful decoration can also be played.
At present, Hydropower Station Underground main building generator floor crown waterproof and furred ceiling way have following several form usually: 1. steel bar concrete full lining is built; 2. surface bearing color steel waterproof on Elements of Space Grid Truss; 3. do color steel waterproof plate above triangle steel roof truss, do decorative panel below; 4. directly hang keel at crown spray anchor layer anchor pole and add waterproof steel plate (have again single ply waterproofing plate and double-deck furred ceiling point); 5. the way such as concrete arched girder and concrete plate.First method needs to take a large amount of scaffolds, and construction is more difficult, long construction period.Although second method easy construction, materials are also comparatively economized, but same layer color steel all used by waterproof and decoration, although thickly dotted funnel has been made and water has been guided to gutter by aqueduct in each seepage point local under crown, but because crown breakthrough is many, the ventilating duct that crown percolating water also can drip to interlayer even drips to the impact of main building generator floor by places such as steel plate seam, air port, sockets produce, corrosion can be caused to ventilating duct in the course of time, need even in a short time to change airduct.The third method due to the space between lower edge on triangle steel roof truss and web member less, betwixt arrange airduct time constructional difficulties, and between a few exhaust duct lateral ties maintenance plank road cannot arrange.4th kind of method is divided into again suspension individual layer steel plate furred ceiling and hangs double-deck furred ceiling two kinds, hanging individual layer furred ceiling is directly hang individual layer furred ceiling beam and furred ceiling purlin and steel plate with suspension rod, the equipment such as ventilating duct are arranged in space between ceiling board and crown spray-up, except the shortcoming of second method, of long duration, crown percolating water can corrode suspension rod, needs regularly to carry out maintaining to suspension rod, as maintaining not in time, can potential safety hazard be there is in whole ceiling structure; Also there is aforesaid drawbacks in the double-deck furred ceiling of the second of the 4th kind of method.Lung biopsy has possessed the shortcoming of first method.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of ceiling structure and construction method thereof of long-span underground power house of optimization, ceiling structure is safe and reliable, water resistance is good, ventilation equipment arrangement convenience, elegant in appearance, easy construction, short construction period.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of ceiling structure of long-span underground power house, comprise the two elongated rock anchorage beams being positioned at upstream and downstream both sides of having constructed, across the steel arch beam in upstream and downstream direction between two rock anchorage beams, be bearing in the purlin holder of arch waterproofing course and the purlin of steel arch beam top flange, the arch splash guard be fixed together with arch waterproofing course purlin, the many steel suspension ring that steel arch lower flange of girder edge hangs and steel suspension rod, the main joist of horizontal ornament layer is hung below steel suspension rod, horizontal ornament layer purlin is fixed with below main joist, at the soffit of horizontal ornament layer purlin, fixing decorative panel is installed, multiple ventilating duct is arranged in space between horizontal ornament layer and arch waterproofing course, at the upper surface of main joist, multiple maintenance plank road is installed.
Described steel arch beam is the I-steel arched girder become with Plate Welding, and its upstream and downstream two supports, on rock anchorage beam, is just being given the position of steel arch beam in described rock anchorage beam and burying steel plate embedded part and steel crab-bolt, be connected between rock anchorage beam with crag by prestressed anchor.
Described arch waterproofing course purlin and horizontal ornament layer purlin are high-strength cold bending thin wall C shape or Z bar purlin.
Described arch splash guard is the high-strength swaging steel plate of aluminum-zinc alloy, and adopt self-tapping screw to connect with the connection of arch waterproofing course purlin, self-tapping screw carries tarpaulin.
Described decorative panel adopts the high-strength zinc-plated or clean panel of aluminum-zinc alloy, adopts self-tapping screw to connect with the connection of horizontal ornament layer purlin.
Described decorative panel is abatvoix.
A construction method for the ceiling structure of long-span underground power house, comprises the following steps:
(1) below main building Arch Excavation to steel arch beam support elevation during 1.5-2 rice, the elongated steel bar concrete rock anchorage beam of construction supporting suspended ceiling steel arched girder, and give in the concrete rock anchorage beam of steel arch beam correspondence position and bury steel embedded part and crab-bolt;
(2) at produce in factory steel arch beam, steel suspension ring, steel suspension rod, in steel arch beam top flange, purlin holder is installed by design drawing, steel suspension ring are installed in bottom flange, before dispatching from the factory, carry out rust cleaning, anticorrosion, fire prevention process;
(3) after the Installation and Debugging of main building bridge machine are good, on bridge machine, the steel platform of erection construction furred ceiling, carries out the construction of furred ceiling, and first install steel arch beam and horizontal support elements thereof, during installation, the skyhook utilizing crown to reserve lifts; Secondly upper strata purlin is installed; Install stringcourse shape waterproofing course steel plate again;
(4) in the steel suspension ring of steel arch lower flange of girder edge, install steel suspension rod, be used for hanging the main joist of lower floor's horizontal ornament layer, steel suspension rod is connected by shackle with the steel suspension ring of steel arch lower flange of girder edge, and steel suspension rod is adjusted with being connected by flower basket bolt between main joist;
(5) installation and repairing plank road on main joist, steel arch beam installs ventilating duct;
(6) purlin and the decorative panel of lower floor's horizontal ornament layer are installed.
In described step (6), in order to extend decorative panel life-span and attractive in appearance, the decorative panel of described horizontal ornament layer is installed before closing on First unit generation.
The invention has the beneficial effects as follows: steel arch beam is independently load-carrying members, and all loads of whole furred ceiling are finally all delivered on described steel arch beam, and steel arch girder construction is safe and reliable.Steel arch beam and all steel beam column all can complete in factory process and transport to in-site installation again.Easy construction, substantially reduces the construction period.The infiltration of factory building crown drains into upstream and downstream abutment wall gutter by upper strata splash guard, thus drain, solve crown seepage water problem, lower floor's horizontal ornament layer serves again good decoration function, space between decorative layer and waterproofing course is large, be convenient to arrange the equipment pipes such as ventilation, meet the needs that power station is run.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the ceiling structure of long-span underground power house of the present invention;
Fig. 2 is the partial schematic diagram of the ceiling structure of long-span underground power house of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As Fig. 1, shown in 2, the ceiling structure of long-span underground power house of the present invention, comprise the two elongated rock anchorage beams 1 being positioned at upstream and downstream both sides of having constructed, across the steel arch beam 2 in upstream and downstream direction between two rock anchorage beams 1, be bearing in the purlin holder of arch waterproofing course and the purlin 3 of steel arch beam 2 top flange, the arch splash guard 4 be fixed together with arch waterproofing course purlin 3, the many steel suspension ring that steel arch beam 2 bottom flange hangs and steel suspension rod 5, the main joist 6 of horizontal ornament layer is hung below steel suspension rod 5, horizontal ornament layer purlin 7 is fixed with below main joist 6, at the soffit of horizontal ornament layer purlin 7, fixing decorative panel 8 is installed, multiple ventilating duct 9 is arranged in space between horizontal ornament layer and arch waterproofing course, at the upper surface of main joist 6, multiple maintenance plank road 10 is installed.
Described steel arch beam 2 is the I-steel arched girders become with Plate Welding, and its upstream and downstream two supports is on rock anchorage beam 1, and just giving the position of steel arch beam 2 in described rock anchorage beam 1 and burying steel plate embedded part and steel crab-bolt, rock anchorage beam 1 is connected by prestressed anchor with between crag.
Described arch waterproofing course purlin 3 and horizontal ornament layer purlin 7 are high-strength cold bending thin wall C shape or Z bar purlin.
Described arch splash guard 4 is the high-strength swaging steel plate of aluminum-zinc alloy, and adopt self-tapping screw to connect with the connection of arch waterproofing course purlin 3, self-tapping screw carries tarpaulin.
Described decorative panel 8 adopts the high-strength zinc-plated or clean panel of aluminum-zinc alloy, adopts self-tapping screw to connect with the connection of horizontal ornament layer purlin 7.
Described decorative panel 8 is abatvoix.
A construction method for the ceiling structure of long-span underground power house, comprises the following steps:
(1) below main building Arch Excavation to steel arch beam support elevation during 1.5-2 rice, the elongated steel bar concrete rock anchorage beam of construction supporting suspended ceiling steel arched girder, and give in the concrete rock anchorage beam of steel arch beam correspondence position and bury steel embedded part and crab-bolt;
(2) at produce in factory steel arch beam, steel suspension ring, steel suspension rod, in steel arch beam top flange, purlin holder is installed by design drawing, steel suspension ring are installed in bottom flange, before dispatching from the factory, carry out rust cleaning, anticorrosion, fire prevention process;
(3) after the Installation and Debugging of main building bridge machine are good, on bridge machine, the steel platform of erection construction furred ceiling, carries out the construction of furred ceiling, and first install steel arch beam and horizontal support elements thereof, during installation, the skyhook utilizing crown to reserve lifts; Secondly upper strata purlin is installed; Install stringcourse shape waterproofing course steel plate again;
(4) in the steel suspension ring of steel arch lower flange of girder edge, install steel suspension rod, be used for hanging the main joist of lower floor's horizontal ornament layer, steel suspension rod is connected by shackle with the steel suspension ring of steel arch lower flange of girder edge, and steel suspension rod is adjusted with being connected by flower basket bolt between main joist;
(5) installation and repairing plank road on main joist, steel arch beam installs ventilating duct;
(6) purlin and the decorative panel of lower floor's horizontal ornament layer are installed.
In order to extend decorative panel life-span and attractive in appearance, the decorative panel of described horizontal ornament layer is installed before closing on First unit generation.
Specifically, at main building Arch Excavation in the following certain limit of steel arch beam support elevation time (about 1.5-2 rice), in upstream and downstream, rock bolt is beaten at abutment wall place, the elongated steel bar concrete rock anchorage beam of construction supporting suspended ceiling steel arched girder, and give in the concrete rock anchorage beam of steel arch beam correspondence position and bury steel embedded part and crab-bolt.
At produce in factory steel arch beam, steel suspension ring, steel suspension rod, purchase corresponding purlin, aluminum-zinc alloy color steel and accessory etc. by design drawing, setting-out blanking, packaging delivery.The accessories such as the purlin holder of steel arch beam top flange, the steel suspension ring of bottom flange, stiffening rib and junction steel plate all just locate in factory and are welded on steel arch beam, carry out rust cleaning, anticorrosion, fire prevention process before dispatching from the factory.
After the Installation and Debugging of main building bridge machine are good, the steel platform of erection construction furred ceiling on bridge machine, carries out the construction of furred ceiling: first install steel arch beam and horizontal support elements thereof, during installation, the skyhook 11 that crown can be utilized to reserve lifts; Secondly upper strata purlin is installed, then installs stringcourse shape waterproof color steel.When constructing upper strata waterproofing course, should be clean by the construction garbage-cleaning in upstream and downstream abutment wall gutter in time, to prevent from blocking gutter.
In the suspension ring of steel arch lower flange of girder edge, install suspension rod, be used for hanging the main joist of lower floor's decorative layer, steel suspension rod is connected by shackle with the steel suspension ring of steel arch lower flange of girder edge, and steel suspension rod is connected adjustment with between lower floor main joist of suspended ceiling by flower basket bolt.
Installation and repairing plank road and railing thereof on the main joist of lower floor's furred ceiling, mounted lamp support; Then the suspension bracket and ventilating duct, the air-conditioning water pipe etc. that hang airduct are installed on steel arch beam.
The purlin of lower floor's horizontal ornament layer is installed, and fixes air port, main building lighting is installed.
In certain hour section before First unit generation, lower floor's horizontal ornament abatvoix is installed.Note, lower layer of water paperback plaque should not install too early, if install too early, because the dust produced during civil engineering in factory building can pollute decorative panel, affect decorative panel life-span and attractive in appearance.
Ceiling construction will use bridge machine, has intersect with mechanical and electric equipment installation, and owner and management should be asked to carry out the coordination of engineering time section.In underground power house, ceiling construction is when other work posts are permitted, can whole day rotation in 24 hours construction.
By the above-mentioned constructure scheme of the present embodiment, can find out:
Steel arch beam is independently load-carrying members, and all loads of whole furred ceiling are finally all delivered on described steel arch beam, and steel arch girder construction is safe and reliable.Steel arch beam and all steel beam column all can complete in factory process and transport to in-site installation again.Easy construction, substantially reduces the construction period.The infiltration of factory building crown drains into upstream and downstream abutment wall gutter by upper strata splash guard, thus drain, solve crown seepage water problem, lower floor's horizontal ornament layer serves again good decoration function, space between decorative layer and waterproofing course is large, be convenient to arrange the equipment pipes such as ventilation, meet the needs that power station is run.
Above-described embodiment is only for illustration of technological thought of the present invention and feature, its object is to enable those skilled in the art understand content of the present invention and implement according to this, only can not limit the scope of the claims of the present invention with the present embodiment, namely the equal change done of all disclosed spirit or modification, still drop in the scope of the claims of the present invention.
Claims (8)
1. the ceiling structure of a long-span underground power house, it is characterized in that, comprise the two elongated rock anchorage beams (1) being positioned at upstream and downstream both sides constructed, be positioned between two rock anchorage beams (1) across the steel arch beam (2) in upstream and downstream direction, be bearing in the purlin holder of arch waterproofing course and the purlin (3) of steel arch beam (2) top flange, the arch splash guard (4) be fixed together with arch waterproofing course purlin (3), the many steel suspension ring that steel arch beam (2) bottom flange hangs and steel suspension rod (5), the main joist (6) of steel suspension rod (5) below hanging horizontal ornament layer, horizontal ornament layer purlin (7) is fixed with below main joist (6), at the soffit of horizontal ornament layer purlin (7), fixing decorative panel (8) is installed, multiple ventilating duct (9) is arranged in space between horizontal ornament layer and arch waterproofing course, at the upper surface of main joist (6), multiple maintenance plank road (10) is installed.
2. the ceiling structure of long-span underground power house according to claim 1, it is characterized in that, described steel arch beam (2) is the I-steel arched girder become with Plate Welding, its upstream and downstream two supports is on rock anchorage beam (1), just giving the position of steel arch beam (2) in described rock anchorage beam (1) and burying steel plate embedded part and steel crab-bolt, rock anchorage beam (1) is connected by prestressed anchor with between crag.
3. the ceiling structure of long-span underground power house according to claim 1, is characterized in that, described arch waterproofing course purlin (3) and horizontal ornament layer purlin (7) are high-strength cold bending thin wall C shape or Z bar purlin.
4. the ceiling structure of long-span underground power house according to claim 1, it is characterized in that, described arch splash guard (4) is the high-strength swaging steel plate of aluminum-zinc alloy, and adopt self-tapping screw to connect with the connection of arch waterproofing course purlin (3), self-tapping screw carries tarpaulin.
5. the ceiling structure of long-span underground power house according to claim 1, is characterized in that, described decorative panel (8) adopts the high-strength zinc-plated or clean panel of aluminum-zinc alloy, adopts self-tapping screw to connect with the connection of horizontal ornament layer purlin (7).
6. the ceiling structure of long-span underground power house according to claim 1 or 5, it is characterized in that, described decorative panel (8) is abatvoix.
7. a construction method for the ceiling structure of long-span underground power house, is characterized in that, comprises the following steps:
(1) below main building Arch Excavation to steel arch beam support elevation during 1.5-2 rice, the elongated steel bar concrete rock anchorage beam of construction supporting suspended ceiling steel arched girder, and give in the concrete rock anchorage beam of steel arch beam correspondence position and bury steel embedded part and crab-bolt;
(2) at produce in factory steel arch beam, steel suspension ring, steel suspension rod, in steel arch beam top flange, purlin holder is installed by design drawing, steel suspension ring are installed in bottom flange, before dispatching from the factory, carry out rust cleaning, anticorrosion, fire prevention process;
(3) after the Installation and Debugging of main building bridge machine are good, on bridge machine, the steel platform of erection construction furred ceiling, carries out the construction of furred ceiling, and first install steel arch beam and horizontal support elements thereof, during installation, the skyhook utilizing crown to reserve lifts; Secondly upper strata purlin is installed; Install stringcourse shape waterproofing course steel plate again;
(4) in the steel suspension ring of steel arch lower flange of girder edge, install steel suspension rod, be used for hanging the main joist of lower floor's horizontal ornament layer, steel suspension rod is connected by shackle with the steel suspension ring of steel arch lower flange of girder edge, and steel suspension rod is adjusted with being connected by flower basket bolt between main joist;
(5) installation and repairing plank road on main joist, steel arch beam installs ventilating duct;
(6) purlin and the decorative panel of lower floor's horizontal ornament layer are installed.
8. the construction method of the ceiling structure of long-span underground power house according to claim 7, it is characterized in that, in described step (6), in order to extend decorative panel life-span and attractive in appearance, the decorative panel of described horizontal ornament layer is installed before closing on First unit generation.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759964A (en) * | 2016-12-30 | 2017-05-31 | 浙江建工幕墙装饰有限公司 | Underground space Dampproof water-drainage structure |
| CN107044186A (en) * | 2017-06-13 | 2017-08-15 | 四川盛邦建设股份有限公司 | Ceiling system and port structure |
| CN108412109A (en) * | 2018-05-29 | 2018-08-17 | 北京六建集团有限责任公司 | A kind of double centers of circle arrow saltire arch ceiling structure and its construction method |
| CN111809786A (en) * | 2020-08-04 | 2020-10-23 | 陕西建工装饰集团有限公司 | Suspended ceiling switching structure of large-span spherical net rack |
| CN113700497A (en) * | 2021-09-27 | 2021-11-26 | 苏州美瑞德建筑装饰有限公司 | Modular clamping installation design structure of arc-shaped aluminum plate for rail transit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106759964A (en) * | 2016-12-30 | 2017-05-31 | 浙江建工幕墙装饰有限公司 | Underground space Dampproof water-drainage structure |
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| CN108412109B (en) * | 2018-05-29 | 2023-12-29 | 北京六建集团有限责任公司 | Double-circle-center vector-type cross arch suspended ceiling structure and construction method thereof |
| CN111809786A (en) * | 2020-08-04 | 2020-10-23 | 陕西建工装饰集团有限公司 | Suspended ceiling switching structure of large-span spherical net rack |
| CN113700497A (en) * | 2021-09-27 | 2021-11-26 | 苏州美瑞德建筑装饰有限公司 | Modular clamping installation design structure of arc-shaped aluminum plate for rail transit |
| CN113700497B (en) * | 2021-09-27 | 2024-01-16 | 苏州美瑞德建筑装饰有限公司 | A modular joint installation design structure for arc aluminum plate of track traffic |
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