CN215369868U - Off-wall type quilt structure for cave depot - Google Patents
Off-wall type quilt structure for cave depot Download PDFInfo
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- CN215369868U CN215369868U CN202120661764.0U CN202120661764U CN215369868U CN 215369868 U CN215369868 U CN 215369868U CN 202120661764 U CN202120661764 U CN 202120661764U CN 215369868 U CN215369868 U CN 215369868U
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Abstract
The utility model relates to an off-wall type quilt compound structure for a cave depot, which comprises a primary supporting structure layer of a cave, an air interlayer and a waterproof heat-insulating structure, wherein the waterproof heat-insulating structure consists of a light steel portal structure layer and a waterproof heat-insulating outer layer coated on the outer side of the light steel portal structure layer; the waterproof and heat-insulating outer layer is composed of a roof panel arranged at the top of the light steel portal structure layer and wall panels arranged on two sides of the light steel portal structure layer, the roof panel and the wall panels on the two sides are respectively made of heat-insulating materials, and waterproof layers are respectively coated on the surfaces of the roof panel and the wall panels on the two sides. The light steel portal structure layer, the external waterproof heat-insulation roof board and the wall panel are arranged to replace the traditional large-area poured concrete arch ring, horizontal support, concrete block and other members, so that the light steel portal structure has the advantages of water resistance, heat insulation, moisture resistance, earthquake resistance, high bearing stability, capability of being prefabricated in advance, rapid field installation, convenience in later maintenance, economy and environmental protection.
Description
Technical Field
The utility model relates to the field of waterproof and heat-insulating of tunnel engineering, in particular to an off-wall type compound structure for a cave depot, which has the advantages of good waterproof and heat-insulating effects, convenience in installation and maintenance, low construction cost and less engineering quantity.
Background
The tunnel and underground engineering are important main parts in the construction of modern highways, railways, urban subways, hydroelectric engineering, national defense engineering and the like, and play an increasingly important role in the construction of modern comprehensive traffic systems and the construction of modern national defense engineering. In recent years, with the rapid development of society and economy in China, tunnels and underground engineering in China are developed rapidly, the tunnel construction is spread in all cities in China, and meanwhile, the characteristic of wide regions in China is considered, special natural climate such as cold climate conditions in the north and humid and hot climate conditions in the south are bound to be faced in the tunnel construction process, and on the basis, the problems of water resistance, moisture resistance and the like are bound to be faced in the tunnel construction process.
At present, in the field of underground engineering, a traditional off-wall type compound structure is mainly applied to large-span (more than 20 meters) underground cave depots and is generally applied to cave depots with high requirements on performances such as water resistance, moisture resistance and the like. The traditional off-wall type lining structure of the compound structure mainly comprises the following structural forms: the top of the cavern is provided with an arch ring with a uniform cross section concrete structure, the arch foot is provided with a horizontal support which is tightly propped against the rock wall, the side wall is generally built by concrete blocks (or material stones) with the same number as the arch ring, an air interlayer is reserved between the quilt and the rock wall, and the bottom of the air interlayer is provided with a drainage open ditch. The traditional off-wall type compound structure built in a cast-in-place mode mainly has the following defects: (1) the composite structure uses cast-in-place concrete arch rings, horizontal supports, concrete blocks and other members in a large area, so that the labor power, material resources and construction period of site construction are increased; (2) the cast-in-place concrete arch ring and the side wall have poor integral stability and seismic performance; (3) cast-in-place concrete components are inconvenient to detach, replace and maintain at the later stage; (4) the problem that a large amount of dust exists in the cast-in-place construction operation, which causes influence on the health of workers.
SUMMERY OF THE UTILITY MODEL
Based on the defects of the traditional off-wall type quilt complex structure, the utility model provides an off-wall type quilt complex structure for a cave depot, which is characterized in that a light steel portal structure layer, a waterproof heat-preservation roof panel and a wall panel are arranged outside the light steel portal structure layer, so that the traditional large-area pouring of a heat-preservation structure consisting of concrete arch rings, horizontal supports, concrete blocks and other components is replaced, and the structure can meet the requirements of special performances of water resistance, heat preservation, heat insulation, moisture resistance and the like of the cave depot and can realize the purposes of prefabrication in advance, quick on-site installation and assembly type construction; in addition, light steel portal structure still has antidetonation, bears the weight of stability height, later maintenance convenience and economic environmental protection's advantage.
The technical scheme adopted by the utility model for solving the technical problems is as follows: an off-wall type quilt compound structure for a cave depot comprises a cave primary support structure layer, an air interlayer and a waterproof heat-insulation structure which are sequentially arranged from a cave surrounding rock to the interior of the cave depot, wherein the waterproof heat-insulation structure consists of a light steel portal structure layer and a waterproof heat-insulation outer layer coated on the outer side of the light steel portal structure layer; the waterproof and heat-insulating outer layer is composed of a roof panel arranged at the top of the light steel portal structure layer and wall panels arranged on two sides of the light steel portal structure layer, the roof panel and the wall panels on the two sides are respectively made of heat-insulating materials, and waterproof layers are respectively coated on the surfaces of the roof panel and the wall panels on the two sides.
Preferably, the primary supporting structure layer of the cavern is an anchor-shotcrete supporting layer closely arranged on the surface of surrounding rock of the cavern.
Preferably, the air isolation layer is arranged between the primary supporting structure layer of the cavern and the waterproof heat-insulation structure, the lateral width of the air isolation layer is 60-80cm, and the top height of the air isolation layer is 120-150 cm.
Preferably, the ground of the cave depot on two sides of the bottom of the air interlayer is respectively provided with open drainage ditches, the open drainage ditches on two sides are respectively connected with a plurality of transverse drainage pipes which are longitudinally arranged at intervals, the middle parts of the plurality of transverse drainage pipes are connected with the longitudinal drainage pipe, and the longitudinal drainage pipe is respectively communicated with the transverse drainage pipes on two sides to form an integral drainage system.
Preferably, the plurality of horizontal drainage pipes are arranged at a longitudinal distance of 5m, and the vertical drainage pipes are made of glass fiber reinforced plastic pipes.
Preferably, the roof panel is made of light heat-insulating materials, and the wall panel is made of light heat-insulating partition boards made of cement and foaming agents; the surface of the roof is provided with a macromolecular self-adhesive film waterproof coiled material so as to form roof waterproofing; and spraying a waterproof layer on the outer surface of the wall panel to form waterproof wall surface.
Preferably, the bottom of each of the two side wall panels is provided with a concrete wall base with the thickness of 250 mm.
Preferably, an access door is arranged on the light steel portal structure layer.
The utility model also provides a method for constructing the off-wall type compound structure for the cave depot, which comprises the following steps:
firstly, excavating a cave of a cave depot and performing primary support operation to form an anchor spraying support layer;
prefabricating a light steel portal structure member, a roof panel and a wall panel, and transporting to a cave depot site;
step three, installing a light steel portal structure layer on site;
fourthly, constructing a drainage open trench, a concrete wall foundation, a transverse drainage pipe, a longitudinal drainage pipe and the ground on site;
fifthly, installing a roof panel and a wall panel on site;
and step six, constructing a roof waterproof layer and a wall waterproof layer on site, and finishing the construction of the off-wall type clad structure of the cave depot.
Compared with the prior art, the utility model has the following advantages and effects:
1. compared with the traditional off-wall type compound heat insulation structure cast in situ by adopting reinforced concrete, the off-wall type compound heat insulation structure for the cave depot adopts the light steel portal structure as the support main body of the heat insulation structure, and has the following advantages: (1) the light steel portal structure can be prefabricated in advance, and can be directly transported to a cave depot construction site for on-site assembly, so that the construction labor cost is greatly reduced, and the construction period is shortened; (2) the light steel portal system has the economic advantages of light dead weight, less steel consumption and the like, and the steel frame structure has high integral rigidity, strong bearing stability and stronger shock resistance due to the skin effect of the system; (3) the light steel portal structure system adopts an assembly type construction process, so that the on-site assembly and the subsequent disassembly and maintenance of components are convenient; (4) the light steel portal structure is free of operation dust during field construction, is relatively environment-friendly, and is safe and harmless to constructors.
2. According to the off-wall type compound structure for the cave depot, the roof board is arranged at the top of the light steel portal structure, the wall panels are arranged on two sides of the light steel portal structure, the roof board and the wall panels are respectively made of heat insulation materials, and waterproof layers are respectively covered on the surfaces of the roof board and the wall panels, so that the light steel portal structure has the characteristics of strong stability and high rigidity, and has the performances of water resistance, heat insulation and moisture resistance.
3. According to the off-wall type cladding structure for the cave depot, the drainage open ditches are arranged at the bottom of the air interlayer and are connected with the longitudinal drainage pipe through the transverse drainage pipe, so that the integral off-wall type cladding structure has a reliable drainage function besides waterproof and moistureproof performances, and the problem of water leakage at the back of an initial supporting structural layer of the cave depot is effectively solved.
4. In conclusion, the off-wall type compound structure for the cave depot has the advantages of water resistance, heat preservation, heat insulation, moisture resistance, earthquake resistance, high bearing stability, quick construction, no pollution in construction and convenience in maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic longitudinal cross-sectional view of an off-wall type complex structure for a cave depot according to an embodiment of the utility model.
Description of reference numerals: 1. a primary supporting structural layer of the cavern; 2. an air barrier layer; 21. draining the open ditch; 3. a light steel portal structure layer; 31. a roof panel; 32. a wall panel; 311. a high molecular self-adhesive film waterproof roll; 321. a wall surface waterproof layer; 322. concrete wall foundations; 4. a transverse drain pipe; 5. and a longitudinal drain pipe.
Detailed Description
The present invention will be described in further detail with reference to examples, which are illustrative of the present invention and are not to be construed as being limited thereto.
Example 1: as shown in fig. 1, the off-wall type compound structure for the cave depot comprises a cave primary support structure layer 1, an air interlayer 2 and a waterproof heat-insulation structure which are sequentially arranged from the cave surrounding rock to the interior of the cave depot, wherein the waterproof heat-insulation structure consists of a light steel portal structure layer 3 and a waterproof heat-insulation outer layer coated on the outer side of the light steel portal structure layer 3; the waterproof and heat-insulating outer layer is composed of a roof panel 31 arranged at the top of the light steel portal structure layer 3 and wall panels 32 arranged on two sides of the light steel portal structure layer 3, the roof panel 31 and the wall panels 32 on two sides are respectively made of heat-insulating materials, and waterproof layers are respectively covered on the surfaces of the roof panel 31 and the wall panels 32 on two sides.
Specifically, in the present embodiment 1, the light steel portal structure layer 3 includes a roofing system, a wall surface system, a rigid frame inclined beam, a rigid frame column, a support, a tie bar, and the like. Compared with a common steel structure, the light steel structure has better economic indexes; in addition, the utility model replaces the traditional roof board and purline made of concrete and hot-rolled section steel with the light steel structure system (purline and wall of cold-bending thin-wall section steel, color-coated profiled sheet and roof board and wall board of light heat-insulating material), and has the following advantages: the light steel structure not only has light dead weight, less steel consumption and high construction speed, but also has stronger shock resistance and can improve the stability of the whole house; the components can be prefabricated in a factory and finally transported to the site for installation and construction, so that rapid installation and assembly type construction is realized, site concrete pouring construction is reduced, and the method has the advantages of high comprehensive economic benefit and environmental protection; meanwhile, a large skin effect exists in the portal rigid frame system, and the skin effect exists, so that the integral rigidity of the building is enhanced.
In this embodiment 1, the primary supporting structure layer 1 of the cavern is an anchor-shotcrete supporting layer closely attached to the surface of the surrounding rock of the cavern. According to the utility model, through the research on the damage mechanism and the support characteristics of the rock mass, under the conditions that the II-level surrounding rock and the III-level surrounding rock span is within 20 meters and no large unstable blocks exist, the self-bearing capacity of the rock mass is strengthened through anchor-shotcrete support, and the self-bearing capacity is taken as a structural layer of a part of a permanent bearing structure, so that the stability of the off-wall lining rock mass can be improved.
In the embodiment 1, the primary supporting structure layer 1 of the cavern is arranged in a manner of being tightly attached to the rock, the rock transmits the temperature and the humidity of the rock to the primary support after the cavern is built, in order to solve the problem, the air interlayer 2 is arranged on the inner side of the primary supporting structure layer 1 of the cavern, the influence of the rock on the temperature in the cavern is reduced by utilizing the characteristic of low air heat conductivity, and meanwhile, the lateral width of the air interlayer 2 can be set to be 60-80cm and the top height can be set to be 120-150 cm by considering the construction operation space of the lining structure.
Example 2: as shown in fig. 1, an off-wall type compound structure for cave depot is different from that of embodiment 1 in that the roof panel 31 is made of light heat-insulating material, and the wall panel 32 is made of light heat-insulating partition wall board made of cement and foaming agent; the surface of the roof panel 31 is provided with a macromolecular self-adhesive film waterproof roll 311 to form roof waterproof; the waterproof layer 321 of surface spraying of shingle nail 32 to it is waterproof to form the wall, the both sides shingle nail 32 bottom is provided with the concrete wall base 322 that thickness is 250mm respectively, forms the whole waterproof system in the light steel portal structural layer outside then.
In this embodiment 2, the roof panel 31 is made of a heat insulating material, and the wall panel 32 is provided with a foaming agent, so that the integral waterproof layer formed by the roof panel and the wall panel has heat insulating effect, and provides a better guarantee for stabilizing the cavern environment.
Example 3: as shown in fig. 1, an off-wall type compound structure for a cave depot is different from that of embodiment 2 in that an access door is arranged on a light steel portal structure layer 3 to facilitate later replacement and operation and maintenance.
Example 4: as shown in fig. 1, an off-wall quilt structure for cave depot is different from embodiment 2 or 3 in that open drains 21 are respectively arranged on the ground of cave depot at two sides of the bottom of an air interlayer 2, the open drains 21 at two sides are respectively connected with a plurality of transverse drain pipes 4 which are longitudinally arranged at intervals, a longitudinal drain pipe 5 is connected between the plurality of transverse drain pipes 4, and the longitudinal drain pipe 5 is respectively communicated with the transverse drain pipes 4 at two sides to form an integral drainage system.
The cave depot is often built in mountains and is exposed to large water amount, and water leakage is caused, in the embodiment, the drainage open trench 21 is additionally arranged at the bottom of the air interlayer 2, and the water leakage at the back of the primary support structure layer can be effectively discharged out of the cave depot by arranging the transverse drainage pipe 4 and the longitudinal drainage pipe 5 which are connected with the drainage open trench.
Specifically, in this embodiment 4, the longitudinal distance between the horizontal drainage pipes 4 is 5m, and the vertical drainage pipes 5 are made of glass fiber reinforced plastic pipes.
Example 5: a construction method for constructing an off-wall compound structure (shown in figure 1) of the cave depot in the embodiment 4 specifically comprises the following steps:
firstly, excavating a cave depot and carrying out primary support operation to form an anchor spraying support layer;
specifically, the present embodiment takes the cavern with a cavern span of 25m and a maximum height of 15m as an example. And (3) excavating the tunnel cavern, selecting reasonable sub-excavation procedures and anchor rod (anchor cable and the like) support measures, and spraying C35 high-performance concrete on the arch part and the side wall of the tunnel cavern to form a primary support structure layer 1 of the cavern.
Secondly, the light steel portal structural member, the roof panel 31 and the wall panel 32 are prefabricated and produced in a factory synchronously with the first step;
and thirdly, after the primary support is stable, the light steel portal structural member, the roof panel 31 and the wall panel 32 are transported to a cave depot site, the stability of the structure must be ensured and permanent deformation is not caused in the transportation process, and the transportation is arranged according to the design of construction organization.
Fourthly, installing a light steel portal structure layer 3 on site;
specifically, the main member is installed first, and the installation sequence is preferably that the main member is just erected from two ends of the support with the columns close to the gable wall, the lateral chamber part is avoided, and purlines, supports and the like between the main member and the support are completely installed after the installation of the main member is finished.
Fifthly, constructing a drainage open trench 21 at the bottom of the air interlayer 2, a concrete wall foundation 322, a transverse drainage pipe 4, a longitudinal drainage pipe 5 and a cave depot ground on site;
specifically, the transverse drainage pipes 4 and the longitudinal drainage ditches are firstly constructed, the distance between the transverse drainage pipes is set according to 5m, drainage holes are arranged at the joints of the transverse drainage pipes 4 and the longitudinal drainage pipes 5, and the longitudinal drainage ditches, the concrete wall bases 322 and the ground are constructed once again.
Sixthly, installing a roof panel 31 and a wall panel 32 on site;
specifically, the roof panel is hoisted one by manufacturing a clamping die and adopting vertical transportation equipment according to the plate type of the roof panel, and the end part of the roof panel is directly fixed on the C-shaped steel.
Seventhly, applying a roof waterproof layer and a wall waterproof layer on site;
specifically, the roof waterproof layer: firstly, cleaning a roof panel surface layer, facilitating leveling of waterproof mortar, and then laying waterproof rolls; wall waterproof layer: firstly, cleaning the roof plate surface, and then spraying a waterproof layer.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the utility model which are described in the patent conception of the utility model are included in the protection scope of the patent of the utility model. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (8)
1. An off-wall type quilt compound structure for a cave depot is characterized by comprising a cave primary support structure layer, an air interlayer and a waterproof heat-insulation structure which are sequentially arranged from a cave surrounding rock to the interior of the cave depot, wherein the waterproof heat-insulation structure consists of a light steel portal structure layer and a waterproof heat-insulation outer layer coated on the outer side of the light steel portal structure layer; the waterproof and heat-insulating outer layer is composed of a roof panel arranged at the top of the light steel portal structure layer and wall panels arranged on two sides of the light steel portal structure layer, the roof panel and the wall panels on the two sides are respectively made of heat-insulating materials, and waterproof layers are respectively coated on the surfaces of the roof panel and the wall panels on the two sides.
2. The off-wall cladding structure for the cavern as recited in claim 1, wherein the primary support structure layer of the cavern is an anchor-shotcrete support layer closely arranged on the surface of surrounding rock of the cavern.
3. The off-wall covered structure for the cavern as recited in claim 1, wherein the air barrier is arranged between the primary supporting structure layer and the waterproof and heat-insulating structure of the cavern, the lateral width of the air barrier is 60-80cm, and the top height of the air barrier is 120-150 cm.
4. The off-wall quilt structure for the cave depot according to claim 1, wherein the cave depot ground at two sides of the bottom of the air interlayer is respectively provided with open drainage ditches, the open drainage ditches at two sides are respectively connected with a plurality of transverse drainage pipes which are longitudinally arranged at intervals, the plurality of transverse drainage pipes are connected with a longitudinal drainage pipe in the middle, and the longitudinal drainage pipe is respectively communicated with the transverse drainage pipes at two sides to form an integral drainage system.
5. The off-wall cladding structure for the cave depot according to claim 4, wherein the plurality of the transverse drain pipes are longitudinally spaced by 5m, and the longitudinal drain pipes are glass fiber reinforced plastic pipes.
6. The off-wall quilt structure for cave depot according to claim 1, wherein the roof panel is made of light heat insulation material, and the wall panel is made of light heat insulation partition wall panel made of cement and foaming agent; the surface of the roof is provided with a macromolecular self-adhesive film waterproof coiled material so as to form roof waterproofing; and spraying a waterproof layer on the outer surface of the wall panel to form waterproof wall surface.
7. The off-wall cladding structure for the cave depot according to claim 6, wherein the bottom of the two side wall panels are respectively provided with a concrete wall base with the thickness of 250 mm.
8. The off-wall covered structure for the cave depot according to claim 1, wherein an access door is arranged on the light steel portal structural layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661764.0U CN215369868U (en) | 2021-03-31 | 2021-03-31 | Off-wall type quilt structure for cave depot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661764.0U CN215369868U (en) | 2021-03-31 | 2021-03-31 | Off-wall type quilt structure for cave depot |
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| Publication Number | Publication Date |
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| CN215369868U true CN215369868U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120661764.0U Active CN215369868U (en) | 2021-03-31 | 2021-03-31 | Off-wall type quilt structure for cave depot |
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| CN (1) | CN215369868U (en) |
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2021
- 2021-03-31 CN CN202120661764.0U patent/CN215369868U/en active Active
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