Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide a transformer substation building spliced by prefabricated parts.
In order to solve the technical problems, the invention is realized by the following scheme: a substation building spliced by prefabricated parts, the substation building comprising a foundation and prefabricated parts, the foundation being in-situ work, the prefabricated parts being mass produced by a factory, the prefabricated parts comprising:
the precast beam comprises a main reinforcement, stirrups, a casting beam and an embedded part, wherein the main reinforcement is bound by the stirrups, the bound reinforcement is transversely downwards poured into a concrete column to form a bound reinforcement with the upper part being an exposed part, the casting beam is arranged at the lower part, the embedded part is arranged in the casting beam, a section of non-poured column area is reserved for the bound reinforcement to be used for connecting other precast components, and a lap joint part is arranged at the side edge of the precast beam, and a steel plate is embedded at the joint part of the lap joint part and a precast external wall plate and is used for welding with angle steel;
the precast column comprises precast column binding ribs, a casting column, a grouting sleeve and an embedded part, wherein the casting column is formed by casting concrete, the precast column binding ribs and the embedded part are arranged in the casting column, a part of the length of each precast column binding rib is exposed for connecting other precast components, and the grouting sleeve is sleeved on the exposed precast column binding ribs;
the prefabricated floor slab is a half-prefabricated truss reinforced composite floor slab, the prefabricated floor slab is provided with three layers, the uppermost layer is a cast-in-situ layer, the middle layer is a ribbed filling layer, the lowermost layer is a prefabricated plate, and the prefabricated floor slab is provided with a lap joint part for lap joint with the prefabricated beam;
the prefabricated stairway is provided with a multi-stage step, is formed by integrally casting, is provided with mounting holes at the first-stage step and the second-stage step at the upper end and the second-stage step as well as at the bottom-stage step and the negative second-stage step, and is connected with the cast-in-situ layer of the prefabricated floor slab through a steel bar straight anchor;
the prefabricated inner wall plate comprises a hollow light partition wall and a ceramic particle board partition wall, wherein the hollow light partition wall is used when a pipeline is required to be penetrated inside, the ceramic particle board partition wall is used in other places, the prefabricated inner wall plate is connected with a prefabricated floor slab by adopting reinforced bars for grafting, and polymerized cement mortar is used for jointing after grafting; the hollow light partition wall is provided with a plurality of threading holes, and two side surfaces of the hollow light partition wall are provided with positioning grooves;
the prefabricated external wall panel comprises an upper reinforced concrete layer, a lower reinforced concrete layer and a heat preservation layer clamped in the middle, wherein the inner and outer page walls of the prefabricated external wall panel are two-way rib plates;
the method comprises the steps of prefabricating a cable shaft, wherein the prefabricated cable shaft is connected in a sectional mode and assembled on site, a splicing hole is formed in one end of the cable shaft, a reserved steel bar inserting part is formed in the other end of the cable shaft, splicing bars are arranged on the ground on site, and then the cable shaft and the splicing bars are connected together in a splicing mode, and secondary pouring concrete is adopted in a middle gap;
the prefabricated components are all provided with connecting structures, the prefabricated components are spliced through a house design structure, the prefabricated columns are spliced through reserved reinforcing steel bars of a foundation, the prefabricated columns and the prefabricated beams are mutually crossed through reserved binding steel bars and are connected through steel bar binding, prefabricated plates of the prefabricated floor slab are connected to the lap joint parts of the prefabricated beams in lap joint mode, floor slab erection reinforcing steel bars and filling ribbed filling layers are arranged after the prefabricated plates are in place, top stress reinforcing steel bars are arranged, and finally the prefabricated beams and the prefabricated beams are cast-in-situ to form cast-in-place layers of the prefabricated floor slab; the prefabricated external wall panel is connected with the prefabricated beam in a downward bracing type rigid mode, angle steel is arranged at the upper and lower connection positions of the prefabricated external wall panel and the prefabricated beam, the angle steel vertical plate is connected with the prefabricated external wall panel through high-strength bolts, the transverse plate of the angle steel vertical plate is connected with the prefabricated beam through anchor bars, and the angle steel is welded with the embedded steel plate of the prefabricated beam.
Further, the prefabricated slab of the prefabricated floor slab is provided with a slab lower ditch, the slab lower ditch utilizes the prefabricated part of the superimposed sheet to be the bottom of the cable ditch, the filling layer is reserved to be used as a cable penetrating space, and the ditch top is blocked by a patterned steel cover plate.
Further, prefabricated side fascia is connected with the prefabricated post, and the seam crossing of two prefabricated side fascia has filled refractory joint material, foaming neoprene airtight strip, foaming polyethylene stick, building sealant in proper order from interior to exterior, prefabricated side fascia is filled with the fire prevention shutoff with prefabricated post junction, the fire prevention shutoff both sides are filled with elasticity caulking material, prefabricated side fascia outermost is the decorative cover.
Further, prefabricated component still includes the electrical prefabricated plate of building, the vertical a plurality of prefabricated holes that are equipped with of electrical prefabricated plate of building, its side direction is equipped with prefabricated hole, the surface of electrical prefabricated plate of building is equipped with the pre-installation groove, the mounting groove is embedded, and the box installation back is with the plate body, and the mounting groove is used for embedded electronic box including illumination block terminal, maintenance power supply box, headstock at least.
Further, the transformer substation building is provided with an anti-seepage structure, a water dripping line is arranged at the bottom of the balcony and awning prefabricated parts of the prefabricated external wall board, the transverse seam of the prefabricated external wall board is waterproof in structure, a tongue-and-groove seam or a high-low seam is formed, the vertical seam is filled with a caulking material with reliable waterproof performance, and the prefabricated external wall board seam is filled with weather-resistant sealant with good compatibility with concrete.
Compared with the prior art, the invention has the beneficial effects that: the transformer substation building is formed by splicing and combining prefabricated parts, and the full-prefabricated scheme has the advantages of low resource consumption, less environmental pollution, shortest site construction period and high quality control degree.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1 to 13, the substation building spliced by the prefabricated parts of the present invention includes a foundation and the prefabricated parts, the foundation is a field operation, the prefabricated parts are mass-produced by a factory, and the prefabricated parts include:
the precast beam 1, the precast beam 1 comprises a main rib 103, stirrups 102, a casting beam 101 and embedded parts, the main rib 103 is bound through the stirrups 102, the bound ribs are horizontally arranged below concrete casting columns to form binding ribs with exposed upper parts, the casting beam 101 is arranged below the binding ribs, embedded parts are arranged in the casting beam 101, a section of non-casting column area is reserved for connecting other precast components by the binding ribs, and a lap joint part is arranged on the side edge of the precast beam 1, and a steel plate is embedded at the joint of the precast beam and the precast external wall panel 5 and is used for welding with angle steel;
the precast column 6, the precast column 6 comprises precast column bundling ribs 603, a casting column 601, a grouting sleeve 602 and an embedded part, the casting column 601 is concrete casting, the precast column bundling ribs 603 and the embedded part are arranged in the casting column, a part of the length of the precast column bundling ribs 603 is exposed for connecting other precast components, and the grouting sleeve 602 is sleeved on the exposed precast column bundling ribs 603;
the prefabricated floor slab 2 is a half-prefabricated truss steel bar composite floor slab, the prefabricated floor slab 2 is provided with three layers, the uppermost layer is a cast-in-situ layer 201, the middle layer is a ribbed filling layer 202, the lowermost layer is a prefabricated plate 203, and the prefabricated floor slab 2 is provided with a lap joint part for lap joint with the prefabricated beam 1;
the prefabricated staircase 3 is provided with a plurality of steps, the prefabricated staircase 3 is formed by integrally casting, mounting holes 301 are formed at the first-stage step and the second-stage step at the upper end and the second-stage step at the bottom end, and the prefabricated staircase 3 is connected with the cast-in-situ layer 201 of the prefabricated floor slab 2 through a steel bar straight anchor;
the prefabricated inner wall board 4 comprises a hollow light partition wall and a ceramic particle board partition wall, wherein the hollow light partition wall is used when a pipeline is required to be penetrated inside, the ceramic particle board partition wall is used in other places, the prefabricated inner wall board 4 is connected with the prefabricated floor slab 2 by adopting steel bars for grafting, and a polymerized cement mortar joint is used after grafting; the hollow light partition wall is provided with a plurality of threading holes 401, and two side surfaces of the hollow light partition wall are provided with positioning grooves 402;
the prefabricated external wall panel 5 comprises an upper reinforced concrete layer, a lower reinforced concrete layer and a heat preservation layer 8 which is clamped between the upper reinforced concrete layer and the lower reinforced concrete layer, wherein the inner page wall and the outer page wall of the prefabricated external wall panel 5 are two-way rib plates;
the method comprises the steps of prefabricating a cable shaft 17, wherein the prefabricating cable shaft 17 is connected in a sectional mode and assembled on site, a splicing hole is formed in one end of the cable shaft 17, a reserved steel bar inserting part is arranged at the other end of the cable shaft, splicing bars are firstly arranged on the ground on site, then the splicing bars are connected together in a splicing mode, and secondary concrete pouring is adopted in a middle gap;
the prefabricated components are all provided with connecting structures, the prefabricated components are spliced through a house design structure, the prefabricated columns 6 are spliced through foundation reserved steel bars, the prefabricated columns 6 and the prefabricated beams 1 are mutually crossed through reserved binding bars and are connected through steel bars, the prefabricated plates 203 of the prefabricated floor slabs 2 are lapped to the lap joint parts of the prefabricated beams 1, floor slab erection steel bars and filling rib filling layers 202 are arranged after the prefabricated floor slabs are in place, top stressed steel bars are arranged, and finally the prefabricated beams and the prefabricated beams 1 are cast in situ to form cast-in-situ layers 201 of the prefabricated floor slabs 2; the prefabricated external wall panel 5 is in downward bracing type rigid connection with the prefabricated beam 1, angle steel 508 is arranged at the upper and lower connection position of the prefabricated external wall panel 5 and the prefabricated beam 1, a vertical plate of the angle steel 508 is connected with the prefabricated external wall panel 5 through a high-strength bolt 506, a transverse plate of the vertical plate is connected with the prefabricated beam 1 through an anchor bar 507, and the angle steel 508 is welded with an embedded steel plate of the prefabricated beam 1.
The prefabricated slab 203 of the prefabricated floor slab 2 is provided with a slab lower ditch, the slab lower ditch utilizes the prefabricated part of the superimposed sheet to be the bottom of the cable ditch, the filling layer is reserved to be used as a cable penetrating space, and the ditch top is blocked by a patterned steel cover plate.
The prefabricated external wall panels 5 are connected with the prefabricated columns 6, the joints of the two prefabricated external wall panels 5 are sequentially filled with fire-resistant joint materials 12, foam neoprene airtight strips 11, foam polyethylene rods 10 and building sealant 9 from inside to outside, the joints of the prefabricated external wall panels 5 and the prefabricated columns 6 are filled with fire-resistant plugs 14, two sides of each fire-resistant plug 14 are filled with elastic caulking materials 13, and the outermost layer of each prefabricated external wall panel 5 is a decorative surface.
The prefabricated component still includes building electrical precast slab 15, the vertical a plurality of prefabricated holes 151 that are equipped with of building electrical precast slab 15, its side direction is equipped with prefabricated hole 151, the surface of building electrical precast slab 15 is equipped with the pre-installation groove 152, the mounting groove 152 is embedded, and the box installation back is with the plate body, and the mounting groove 152 is used for embedded electric box including illumination block terminal, maintenance power supply box, headstock at least.
The transformer substation building is provided with an anti-seepage structure, balcony and awning prefabricated components of the prefabricated external wall panels 5 are picked out, water dripping lines are arranged at the bottoms of the boards, transverse seams of the prefabricated external wall panels 5 are waterproof in structure, tongue-and-groove seams or high-low seams are made, the vertical seams are filled with caulking materials with reliable waterproof performance, and the prefabricated external wall panels are filled with weather-resistant sealant with good compatibility with concrete.
Example 1, preparation and construction of precast beam 1:
the design scheme is as follows: the maximum span of the frame is 10.50m, wherein the larger part span is 6.0m, the small amount is 3.0m, three beam sections with the width of 300mm and the heights of 1100, 600 and 500 are respectively selected according to corresponding specifications, C30 is selected for concrete, HRB400 is adopted as a main beam reinforcement, HPB300 is adopted as a stirrup, the beam is a superposed beam, binding of the main beam reinforcement and the stirrup is completed in a prefabrication factory, pouring of the lower part is completed, the thickness of the superposed part at the upper part is 255mm, and pouring after the combination of members such as a column, a floor slab and the like is completed on site.
The production process comprises the following steps: the precast beam is produced by adopting a special die in a factory, and the process flow is as follows: binding and forming the steel bars, assembling the mould, installing the embedded part, pouring concrete and curing.
The installation process comprises the following steps: erecting a beam temporary shoring, hoisting a precast beam in place and adjusting elevation; and (3) hoisting the prefabricated laminated slab in place, partially plugging the mould, inserting the hogging moment steel bars on the beam and the floor slab, and finally carrying out concrete pouring on the laminated layer. The process omits the beam plate formwork supporting process, saves the template consumption, and realizes the perfect combination of beams, plates and columns.
Example 2, preparation and construction of prefabricated column:
the design scheme is as follows: according to the design scheme, two types of column sections are selected according to model calculation, 400x400 and 400x600 are selected as column sections, C30 is selected as column concrete, HRB400 is adopted as column main reinforcement, HPB300 is adopted as stirrup, the maximum height of the column is 5m, the elevation of the starting point at the bottom of the column is-0.02 m (adjusting and installing sleeve), the middle part is prefabricated in a factory, the on-site cast-in-place section is arranged in the joint range of the top and the beam, and after casting is finished, 165mm of column top reinforcement is exposed for reinforcement sleeve connection.
The production process comprises the following steps: the precast beam is produced by adopting a special die in a factory, and the process flow is as follows: binding and forming the steel bars, assembling the mould, installing the embedded part, pouring concrete and curing.
The installation process comprises the following steps: paying off and positioning on the floor, snapping lines, hoisting the prefabricated column into position, temporarily fixing the inclined support, precisely adjusting the verticality and elevation, and injecting high-strength grouting material into the grouting sleeve.
Example 3, preparation and construction of precast floor slabs:
the design scheme is as follows: the slab adopts a semi-prefabricated truss reinforced composite floor slab, the concrete is C30, the reinforced steel bar is HRB400, the total thickness of the composite slab is 250mm, the thickness of the composite portion is 60mm, the cast-in-situ portion is 70mm, and in order to meet the deflection calculation requirement, the middle 120mm is a ribbed filling layer.
The construction process comprises the following steps: setting out and positioning a beam top, snapping a line, installing a temporary top support and adjusting to a plate bottom elevation, arranging a slurry leakage prevention measure at a Liang Qiangding part, hoisting a superposed floor slab, rechecking and adjusting the plate bottom elevation, inserting a beam and a floor slab hogging moment steel bar, arranging a pipeline on a plate surface, and pouring superposed layer concrete. The process can eliminate the secondary beam of the floor slab, lighten the dead weight of the floor slab and save the template of the floor slab.
Example 4 preparation and construction of prefabricated stairway:
the design scheme is as follows: the thickness of the prefabricated stairway is 100mm and 150mm, the prefabricated stairway is a fully prefabricated assembled stairway, and the prefabricated stairway is divided into a prefabricated single-track stairway and a prefabricated double-track stairway according to the design purpose, and an adjustable seam of 10-20mm is properly reserved between the width of the prefabricated stairway and the width of a stairwell so as to facilitate the assembly of the stairway; the prefabricated stairway is directly anchored into the cast-in-situ layer part of the composite floor slab through the reinforcing steel bars, and is reliably connected with the main body, and the stairway and the south net An Jian ring are required to be prefabricated integrally.
The construction process comprises the following steps: paying off and positioning and springing a reference line, installing a temporary shoring and adjusting elevation, hoisting stairs to be in place, binding platform steel bars, and integrally casting the upper end and the platform.
Example 5 preparation and construction of prefabricated interior wall panels:
the design scheme is as follows: the inner partition wall adopts a hollow light partition wall and a ceramsite plate partition wall, the thickness is 200mm, and the volume weight is 80-90kg/m 2 The wall has light weight, when the pipeline is needed to be penetrated inside, the hollow partition wall is adopted, the other parts can be ceramic plate partition walls, and the inner partition wall is connected with the floor by adopting steel bars for grafting and polymerized cement mortar for connection.
The installation process comprises the following steps: paying off positioning, wallboard positioning, correcting, temporarily fixing the wallboard by using a wooden wedge, adjusting elevation and verticality floor (top of bottom), connecting two adjacent wallboards up and down, and pointing.
Example 6 preparation and construction of prefabricated exterior wall panels:
the design scheme is as follows: the sandwich heat-insulating outer wall with the thickness of 240mm is adopted by the outer wall, and is composed of an inner reinforced concrete plate layer, an outer reinforced concrete plate layer and a heat-insulating layer clamped in the middle, wherein the thickness of an outer page wall is 50mm, the thickness of a middle sandwich layer is 70mm, the thickness of an inner page wall is 150mm, the inner page wall and the outer page wall are both two-way rib plates, the concrete grade is C30, and nonmetal connecting pieces among the three layers form a whole.
The production process comprises the following steps: the prefabricated outer wall adopts a reverse-beating molding horizontal production process, and the outer surface of the outer wall is downward contacted with the template, so that the outer surface can be ensured to be flat and smooth. The process sequence is as follows: the combined die, the outer protective layer steel bar, the outer protective layer concrete, the heat preservation plate and the connecting piece are installed, the inner layer front steel bar, the inner layer wall concrete and the forming maintenance are carried out.
The installation process comprises the following steps: paying off positioning, hoisting a wallboard in place, installing an inclined support, and adjusting elevation and verticality.
Example 7 design of plate under groove:
the design scheme is as follows: the indoor cable trench is only 110kVGIS indoor cable trench, in order to achieve the combination with prefabrication, 600x200 cable trench is adopted, the prefabrication part of the prefabrication laminated slab is utilized as the bottom of the cable trench, the filling layer is reserved to serve as a cable penetrating space, the trench top is blocked by a patterned steel cover plate, and the cable trench is reserved between slab joints to meet the stress characteristic because the slab is a one-way slab and the stress is the lap joint part at two sides.
Example 8, prefabricated cable shaft:
the design scheme is as follows: the cable shaft is divided into a primary shaft and a secondary shaft, the shaft is prefabricated in sections, assembled on site, connected with the ground by dowel bars, reserved steel bars between each two joints, spliced on site and secondarily irrigated in gaps.
Example 9 node assembly of precast beams and columns:
the design scheme is as follows: the beam and column nodes are the main connecting nodes of the frame structure, floor load is transferred to the beam and Liang Zaichuan is transferred to the column through the floor, therefore, the node is a very critical node of the frame structure. The field structure of the steel bars is clear in lap joint and reasonable in stress.
The construction process comprises the following steps: the prefabricated assembly type structure adopts a cast-in-place mode at the joint of the beam and the column, the column is in place, the prefabricated frame beam is lapped at the edge of the column for about 10mm, a reserved main reinforcement in the beam goes deep into the column, the anchoring length is met, the reinforcing steel bars at the top of the beam are placed on site, the column and the column reinforcing steel bars are connected through a sleeve, and pouring is carried out after the intersection of the column and the beam reinforcing steel bars is completed.
Example 10, prefabricated column and prefabricated exterior wall panel node assembly:
the design scheme is as follows: the prefabricated outer wall is a split point at the frame column, reliable and flexible connection with the column is needed, an elastic caulking material and a fireproof blocking are added between the plates, a fireproof material and a waterproof material are filled between the plates, and finally sealing glue is used for blocking.
The construction process comprises the following steps: when the PC board is lowered in place, reserved reinforcing steel bars on the PC board are inserted into the cast-in-situ beam, then the PC board is placed in a real place, the nuclear elevation and verticality are initially adjusted, the components and the concrete structure are in inclined support and are in bolt connection, temporary fixation is carried out, the PC board is corrected, waterproof and fireproof materials are filled, concrete pouring is carried out, and sealing glue is filled.
Example 11 node assembly of precast beams and precast floor slabs:
the design scheme is as follows: the thickness of the prefabricated composite floor slab is 250mm, the prefabricated part at the bottom is 60mm, the middle is 120mm thick and filled with a cast-in-situ layer, the upper part is 70mm of the cast-in-situ plate, the prefabricated part at the bottom can play a role of a template, the prefabricated part of the plate is overlapped to the prefabricated beam section by about 10mm, floor slab erection steel bars and filling materials are arranged after the prefabricated composite floor slab is in place, the stressed steel bars at the top of the floor slab are arranged, and finally the composite part is poured together with the cast-in-situ beam part.
The construction process comprises the following steps: and installing a temporary top support and adjusting the temporary top support to the elevation of the bottom of the slab, arranging a slurry leakage prevention measure at the Liang Qiangding part, hoisting the superposed floor slab, rechecking and adjusting the elevation of the bottom of the slab, paving floor slab stand bars, filling sandwich materials, arranging pipelines, arranging hogging moment bars, penetrating into the beam, and integrally pouring the beam and the slab.
Example 12 node assembly of precast beams and precast external wall panels:
the design scheme is as follows: the outer wall is connected with the beam in two modes, one is an upper hanging type, and the other is a lower supporting type. The invention adopts an external wall panel with the thickness of 240mm and partially adopts a sandwich external wall panel. The connection of the plates and the beams adopts rigid connection, L200X 150X 12 angle steel and a high-strength bolt phi 22 are used as main force transfer construction, the angle steel is prefabricated in advance at the position of the outer wall plate 35mm away from the bottom, and the outer wall plate is fixed by the bolts after being in place. Achieving better force transmission effect.
The construction process comprises the following steps: and hoisting the external wall board, temporarily fixing, connecting the corrected board bottom with angle steel by using left and right adjustable bolts, welding the other side of the angle steel with a beam surface embedded steel plate, and connecting the board top with the beam by using angle steel and high-strength bolts.
Example 13 design of building electrical prefabricated panels 15:
the design scheme is as follows: according to the standard component purchasing technical requirement, the specification of the box body is reduced as much as possible, and the sizes of the lighting distribution box, the overhaul power supply box, the power box and the like are unified to be 600mm multiplied by 120mm except for 600mm multiplied by 1400mm (floor mounting) of the main transformer overhaul power supply box.
All the boxes are embedded and concealed, the wallboard is reserved according to the positions of the boxes, and cables are led out from the exposed wiring grooves after passing through the boxes through prefabricated holes of the wall body.
The construction process comprises the following steps:
(1) When the distribution boxes are installed in parallel, the deviation of the verticality per meter is not more than 5mm, and the joint between the cabinets is not more than 2mm.
(2) The grounding of the box body should be firm and good, and the openable door with electric appliances should be reliably connected with the grounded metal framework by yellow-green double-color stranded wires.
The equipment is selected from: the box body is made of stainless steel materials.
Embodiment 14, the substation building of the present invention further comprises a switch prefabricated panel:
the design scheme is as follows: the switch socket adopts hidden coating, holes are reserved on the required wallboard, and holes are reserved at the switch reserved holes according to the size of 4 panels in order to reduce the variety of prefabricated wallboards. The socket hole is reserved according to 2 panel sizes. And then the switch panel is installed or sealed by a dummy panel according to the actual needs.
The construction process comprises the following steps:
(1) Mortar, dust and other sundries remained in the bottom box are removed before wiring.
(2) When in wiring, the wires in the box are straightened, the left insulating layer is cut off, the wires are coiled on the wiring posts corresponding to the switch and the socket in a clockwise direction, the pressing head is screwed, and the wire core folding head is inserted into the wiring terminal and then is tightly pressed by the jackscrew.
(3) The connector penetrating into the piping wire should be arranged in the junction box, the wire end needs to be left with a margin of 150mm, the connector lap joint should be firm, and the insulating tape is wrapped uniformly and tightly.
Example 15, leakage preventing structure:
the important part of the anti-leakage treatment of the invention is the gap between the external wall boards, the gap between the external window and the external wall boards and the parapet wall.
The seam of the prefabricated external wall panel must be treated, which is also an extremely important process in the assembled building, and a waterproof system with waterproof structure, waterproof material or waterproof combination of waterproof structure and waterproof material is selected according to the seam characteristics of different parts and local weather conditions, and the components such as a balcony, a awning and the like of the outer wall are selected to set water dripping lines at the bottom of the panel. The prefabricated external wall panel is waterproof in transverse seam, the tongue-and-groove seam or the high-low seam is made, the vertical seam is waterproof by adopting materials, the caulking materials with reliable waterproof performance are adopted, the width of the panel seam is not more than 20mm, and the requirement of the maximum allowable deformation rate of the sealant is met. The weather-resistant sealant used for the outer wall board joint has good compatibility with concrete, and has the requirements of low temperature flexibility, maximum expansion deformation, shearing deformation, mildew resistance and water resistance.
Besides the waterproof requirement same as that of a common building, the waterproof requirement of the prefabricated concrete exterior wall cladding is increased. The exterior wall cladding has good waterproof performance, and the weak link is the treatment of the joint of the door and window and the joint of the exterior wall panel. According to the specification, the building with the size of less than 50m can adopt a method of combining waterproofing and structural waterproofing. The invention adopts two waterproof methods for the plate seam of the building hanging plate. The sealant used for the exterior wall cladding board seam adopts import weather-resistant sealant. The compatibility of the sealant and the concrete, the low-temperature flexibility, the maximum expansion deformation, the shearing deformation, the mildew resistance and the water resistance all meet the design requirements.
The outer door and window frame of the case is hung on the factory and the outer wall for one-time casting molding, so that the hidden danger of water seepage is radically eliminated by the joint of the door and the window.
The outer protective structure of the prefabricated building should confirm the personal measure of heat preservation according to the thermal engineering design requirement of the building envelope, this design scheme is taking into account the green energy-conserving requirement, use the prefabricated sandwich outer wall with new energy of heat preservation and insulation in the room outer wall of the room that the air conditioner of 10kV high-pressure room, relay and communication room, battery room arrangement, except that the periphery of the door and window opening allows there is the concrete rib that link up, all adopt the continuous heat-insulating layer all, the inner and outer leaf wall is connecting the piece to choose the quite corrosion-resistant material, and need to consider the cold and hot bridge produced by the connecting piece to the influence of the heat transfer coefficient of the composite external wall board, therefore the invention needs to use the nonmetallic new material as the inner and outer leaf wall to connect.
The sandwich thermal insulation material of the sandwich plate adopted by the invention is extruded polystyrene board (XPS) with the compression strength of 150-250 kPa. The thickness of the heat preservation layer is 80mm. Through the preliminary test of the plate, the heat transfer resistance value is 2.91 (m 2 K/w), calculated, heat transfer coefficient 0.34 (w/m 2 Taking 110kV transformer substations in Shenzhen area as an example, checking the special meteorological data set for Chinese building thermal environment analysis, wherein the outdoor average temperature is 31 ℃, the air conditioning room related by the design of the invention is a 10kV high-voltage room, a relay, a communication room and a storage battery room, and the indoor control temperature is 25.5 ℃ according to daily operation habit, and the total energy consumption is 1300 kW.h/year through calculation. Heat transfer coefficient of common reinforced concrete outer wall 2.1w/m 2 And k, calculated to consume 8033 kW.h/year. Compared with the common external wall panel, the sandwich external wall panel adopted by the invention has the advantage that the energy consumption is 6732 kW.h/year.
The connection of the steel bars at the joints of the assembled structure can adopt grouting connection, indirect lap connection, mechanical connection or welding and the like of the steel bar sleeves. In the cast-in-place concrete specification, the area percentage of the lap joint of the steel bars in the same connecting section is not more than 50 percent for the column, and as the grouting sleeve joint is an I-level joint in the technical rule of steel bar connection (JGJ 107-2010), the joint rate of the same section is not limited, thereby providing convenience for the longitudinal steel bar connection of vertical prefabricated components such as prefabricated columns, shear walls and the like.
The steel bar sleeve grouting connecting joint technology is a main steel bar joint connecting technology recommended in technical regulations of assembled concrete structures (JGJ 1-2014), is also a foundation for guaranteeing the integrity of various assembled integral concrete structures, and is formally implemented in 10 months and 1 day of 2014.
The sleeve grouting process comprises the following steps: after the prefabricated column is installed, high-strength grouting material is injected from the grouting hole of the sleeve by a certain pressure, and when the upper non-exhaust hole overflows from the grouting material, the grouting hole and the exhaust hole are plugged by a sealing material, so that grouting operation is completed.
According to the specification of the technical regulations of assembled concrete structures (JGJ 1-2014), a grouting joint manufactured by a grouting sleeve and a high-strength grouting material is required to be subjected to pattern inspection, and grouting construction operation is required to be operated by trained special personnel.
In order to reduce indoor temperature, in the prior art, the transformer substations in the south area generally adopt ventilation measures to remove heat, but equipment faults are easy to occur due to high humidity, main equipment rooms in some transformer substations are cooled and dehumidified by adopting a method of installing an air conditioner, but because the outer wall surface is less adopting heat preservation and insulation materials, the outer wall can transfer outdoor heat into the room, so that the load of the air conditioner is increased, and the energy conservation is extremely unfavorable.
In order to reduce the energy consumption of air conditioner operation, the proposal learns the advanced method abroad, adopts the sandwich heat-insulating outer wall measures to block the heat transfer between the inside and the outside of the building, improves the heat-insulating performance of the wall body, reduces the energy consumption of the building, reduces the load of the air conditioner, reduces the investment of air conditioner equipment, can lighten the dead weight of the wallboard and improves the fire resistance of the wall body, and the technology has 30 years of application history abroad and is very mature.
The protocol specification specifies: the heat-insulating material in the sandwich layer of the sandwich external wall panel is preferably light and efficient heat-insulating materials such as extruded polystyrene board (XPS), rigid foam Polyurethane (PUR) and the like. The heat-insulating material should meet the regulations of the national current relevant standards. The sandwich outer wall and the inner and outer leaf wall adopt nonmetallic piece products with low heat conductivity coefficient. And avoid forming a cold bridge.
The outer wall adopts bare concrete or bare decorative concrete, plastering and a decorative layer are canceled, and the LOGO of the building adopts a concrete integrated forming technology. The common external wall plastering and decorating materials not only can increase the manufacturing cost, but also have the falling risk, the design is to adopt the surface of bare concrete, or make the decorating concrete by utilizing the plasticity of the concrete, the natural property of the concrete is fully represented, the project industrial characteristics are met, the tourists are saved in materials, and the damage to the environment is reduced.
The building LOGO of the wall top is to be manufactured by adopting a concrete modeling mold silica gel, or the manufactured lamp box is embedded and embedded integrally during the production of a concrete member, so that the future repair and maintenance work can be reduced.
When the bare concrete is manufactured, the mould is required to be clean and tidy, a special high-quality release agent is adopted, the finished product protection is realized after the component is molded, and only a layer of protective agent is required to be sprayed on the surface after the installation is finished.
The manufacturing principle of the clear water decorative concrete member is as follows: and (3) coating a film on the manufactured decorative surface by using silica gel, turning over the formed silica gel, placing the formed silica gel at the bottom of a mould, pouring concrete, and forming the formed concrete, wherein the surface of the component presents the same patterns as the decorative surface, and the process adopts a silica gel mould construction process.
The horizontal joint and the vertical joint of the assembled outer wall are waterproof by weather-proof sealant, the assembled outer wall can generate relative displacement with a main body structure under the wind load, the temperature effect and the earthquake effect, if the weather-proof sealant is insufficient in elasticity and weather resistance, water leakage of the outer wall of a building can be caused, in order to ensure the waterproof and sound insulation performance of the outer wall, the PC-MS single-component weather-proof sealant is adopted in the scheme, and the PC-MS single-component weather-proof sealant is special for concrete prefabricated components and can effectively reduce the later maintenance cost.
The material requirements are as follows: single-component, neutral and 8 hours curing at room temperature-easy construction operation.
High strength, good elasticity, strong binding power, good compatibility, aging resistance and difficult cracking.
The paint has no silicone oil exudation, no chemical release, and compatibility with common paint and coating, and no pollution to the concrete surface. The sealing waterproof device is suitable for sealing gaps of concrete members, stones and metal materials.
As shown in fig. 2, fig. 2 is a schematic diagram of distribution of each layer of a substation building according to the present invention; the first layer is a main transformer room and a GIS room 500, the second layer is a cable layer 400, the third layer is a high voltage room and a main control room 300, the fourth layer is a capacitor battery mounting layer 200, and the top layer is a roof 100.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.