CN212271005U - Superposed assembly type structure subway station - Google Patents
Superposed assembly type structure subway station Download PDFInfo
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- CN212271005U CN212271005U CN202020778771.4U CN202020778771U CN212271005U CN 212271005 U CN212271005 U CN 212271005U CN 202020778771 U CN202020778771 U CN 202020778771U CN 212271005 U CN212271005 U CN 212271005U
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Abstract
The utility model relates to a coincide assembled structure subway station. At present, when a station is constructed, a large number of templates are needed, the field workload is large, and the construction period is long. The cast-in-place wet operation also causes environmental water pollution, noise pollution and air pollution. The utility model provides a coincide assembled structure subway station right, its constitution includes roof (1), medium plate (2), bottom plate (3), heat exhausting flue (5) and side wall (4), bottom plate to two layers of bottom construction joints of burden be cast-in-place reinforced concrete structure, the pre-buried grout sleeve that leaks of construction joint department connects upper portion side wall atress reinforcing bar, the prefabricated section of truss muscle is taken to the side wall endothelium, simultaneously as inboard template, in the grout sleeve is inserted to the bottom, connects the atress reinforcing bar through pouring high-efficient grout material, establishes cast-in-place area on the construction joint, pours side wall cavity concrete, forms the side wall congruent structure. The utility model discloses be applied to subway construction field.
Description
The technical field is as follows:
the utility model relates to a coincide assembled structure subway station.
Background art:
the excavation method of the underground station of the subway mainly comprises an open excavation method, a cover excavation method and a shallow-buried underground excavation method. When various excavation methods relate to construction of underground station structures of subways, structures such as side walls, stand columns, bottom plates, middle plates and top plates of the station structures are usually constructed by adopting on-site formwork erecting, on-site concrete pouring and on-site maintenance methods. The cast-in-place construction method has the advantages of good integrity, high rigidity, good shock resistance and the like. But has obvious disadvantages for adapting to the schedule arrangement of the construction site and the requirement of green construction. Not only needs a large number of templates, but also has large field workload and longer construction period. The cast-in-place wet operation also causes environmental water pollution, noise pollution and air pollution.
The invention content is as follows:
the utility model aims at providing a coincide assembled structure subway station.
The above purpose is realized by the following technical scheme:
a folding assembly type structure subway station comprises: roof, medium plate, bottom plate, heat extraction wind channel and side wall, bottom plate to two layers of bottom construction joints of burden be cast-in-place reinforced concrete structure, the pre-buried grout sleeve that leaks outward of construction joint department connects upper portion side wall atress reinforcing bar, the side wall endothelium is the prefabricated section of taking the truss muscle, simultaneously as inboard template, in the grout sleeve is inserted to the bottom, connect the atress reinforcing bar through pouring high-efficient grout material, vertical piecemeal width is about 2m, interblock distribution muscle structure is strengthened, construction joint upper portion sets up cast-in-place area, pour into side wall cavity concrete, form the side wall congruent structure.
Coincide assembled structure subway station, two layer side wall concreting of burden to two layer top construction joints department of burden, construction joints department side wall atress reinforcing bar reserves reinforcing bar connector, connects upper portion side wall atress reinforcing bar, the medium plate bottom skin be the prefabricated section of taking the truss muscle, as the bottom skin template simultaneously, vertical piecemeal width is about 2m, the interblock distribution muscle structure is strengthened, the equal on-the-spot ligature of epithelium reinforcing bar, the heat removal wind channel reinforcing bar connecting hole is reserved to the medium plate prefabricated section for the heat removal wind channel is installed to the later stage, medium plate concreting to one layer side wall bottom construction joints department, forms the medium plate beta structure, the pre-buried grout sleeve of leaking outside of joint, connects upper portion side wall atress reinforcing bar.
Coincide assembled structure subway station, installation of negative one deck side wall prefabricated section, connection and cast-in-place area set up with two layers on the negative, negative one deck side wall concrete placement to negative one deck top construction joint department, construction joint department side wall atress reinforcing bar is reserved the reinforcing bar and is plugged into the ware, connects the upper portion reinforcing bar, the roof base coat be the prefabricated section of taking the truss muscle, as the base coat template simultaneously, vertical piecemeal width is about 2m, the structure of interblock distribution muscle is strengthened, the equal on-the-spot ligature of epithelium reinforcing bar, roof concrete placement forms roof congruent structure.
Coincide assembled structure subway station, station structure back of capping, installation medium plate lower part heat extraction air flue, heat extraction air flue for whole U type is prefabricated, the muscle is hung to the upper portion hourglass, penetrates heat extraction air flue in the medium plate preformed hole through jacking equipment, upper portion is fixed with the gasket with the nut, adopts high-efficient grout material to fill closely knit in the cavity.
The utility model has the advantages that:
1. the utility model discloses a subway underground station adopts a construction mode combining a superimposed structure and local integral cast-in-place; the inner skin of the side wall, the middle plate and the lower skin of the top plate are prefabricated reinforced concrete structures with local thickness and truss ribs, and a prefabricated component with the truss ribs is used as an inner mold to form an overlapped structure with the rear cast-in-place structure; the bottom plate and the beam column joint are all cast-in-place.
The side wall atress reinforcing bar adopts grout sleeve (filling high-efficient grout material) and steel bar connector type to connect, and medium plate and roof atress reinforcing bar adopt the steel bar connector to connect, and cast-in-place partial distribution muscle is whole ligature, and prefabricated section parting punishment cloth muscle structure enhancement processing.
The utility model discloses can solve effectively to shorten the construction period under severe cold and lengthy weather condition, realize reducing the place and taking up, alleviating traffic pressure of reliving under narrow and hurry site condition, regard prefabrication, assembly as the thread, can effectively promote the earlier stage working depth such as design, production, construction, equipment, the degree of depth integrates and uses "the traditional organization management mode of cutting into sections, stripping and slicing, intermittent" as the characteristic, realizes the integrated management; the concrete pouring quality is improved, the concrete self-waterproof quality is improved, the structure water leakage is avoided, and the method is suitable for the construction of subway station structures in various stratums.
The utility model adopts a composite structure and a local integral cast-in-place combined mode for station construction; meanwhile, the prefabricated slab with the superposed structure replaces a traditional temporary template; the local coil buckle bracket replaces a full bracket; the side wall stressed steel bars adopt a grouting sleeve connection type; the upper row of hot air ducts is prefabricated in an integral U-shaped mode, and is installed after the structure is capped through the middle plate in a pre-embedded mode, and the construction period is shortened.
The utility model ensures seamless connection between the reinforcing steel bar of the line pair and the prefabricated block of the face to face, promotes to adopt automatic processing and shaping limit measures, and can realize the lifting of construction quality from centimeter level to millimeter level; the adoption of the vibration-free superfluid shrinkage-free concrete avoids the concrete pouring quality defect caused by artificial inertia and insufficient experience.
The assembly type construction organization of the utility model reduces the amount of field workers, realizes standardization and flow process, and can reduce human errors and personal casualties; factory prefabricated construction, reinforcing bar are bound in advance, the template faces forever and combines and the support system is optimized, can effectively reduce the field demand to the job site.
The utility model discloses the assembled tissue has saved most on-the-spot reinforcement, support and has laid, has tightened the process and has linked up, saves about 2 months (saving about 30%) with the major structure time limit for a project, and the road resumes can accomplish in the same year (saving a winter rest period 4 months) to for follow-up clearance place creation condition, so that develop to link up measurement and inner structure construction as early as possible.
Description of the drawings:
fig. 1 is a schematic view of the cross-sectional form of the foundation pit of the present invention.
FIG. 2 is a schematic diagram of installation of a negative two-layer side wall reinforcing steel bar limiter, pre-embedding of a bottom plate and concrete pouring.
FIG. 3 is a schematic view of the installation of the negative two-layer precast block and the column shaping template and the fixation of the lateral bracket.
FIG. 4 is a schematic diagram of concrete pouring of the negative two-layer side wall and the column and placement of the middle plate precast block.
FIG. 5 is a schematic view of installation of the negative-layer side wall reinforcing steel bar limiter, middle plate pre-embedding and concrete pouring.
FIG. 6 is a schematic view of the installation of a negative layer precast block and a column sizing template.
FIG. 7 is a schematic view of the placement of negative side walls, column concrete placement, and top plate precast blocks.
FIG. 8 is a schematic view of top plate binding steel bars and concrete pouring.
FIG. 9 is a schematic view of the inner structures of soil covering, road surface restoration, hot air exhaust duct installation, and station boards.
Fig. 10 is a schematic view of a bottom plate steel reinforcement cage and a stopper module.
Figure 11 is a schematic view of the positioning of the diaphragm wall stop.
Fig. 12 is a schematic cross-sectional view of a standard single column double span of a station.
FIG. 13 is a schematic view of the assembly of the side wall precast blocks and the connection of the reinforcing steel bars.
FIG. 14 is a schematic view of a side wall preform.
Fig. 15 is a schematic diagram of the assembly of the top and middle plate precast blocks.
FIG. 16 is a schematic view of the transverse assembly of prefabricated wall and slab blocks.
FIG. 17 is a schematic diagram of the assembly of the side wall precast blocks and the pre-embedding and pre-embedding.
FIG. 18 is a schematic diagram of the prefabrication of a rail head duct.
Fig. 19 is a structural connection construction drawing of the present invention.
In the figure: 1. top plate, 2, middle plate, 3, bottom plate, 4, side wall, 5, hot air exhaust channel, 6, first concrete support, 7, second steel support, 8, third steel support, 9, ground elevation, 10, support positioning steel bar, 11, steel bar stopper, 12, longitudinal horizontal construction joint, 13, grouting sleeve, 14, middle longitudinal beam, 15, negative two-layer shaped template/structural column, 16, lateral support, 17, negative two-layer side wall prefabricated plate, 18, prefabricated middle plate, 19, disk buckle support, 20, bolt tensioning, 21, negative one-layer side wall, 22, negative one-layer shaped template/structural column, 23, prefabricated top plate, 24, earth covering, 25, platform plate, 26, underground continuous wall, 27, steel plate, 28, steel pipe support, 29, buckle fixing, 30, water stop steel plate, 31, positioning steel plate clamp, 32, angle template, 33, steel bar connector, 34. truss muscle, 35, bottom plate atress owner muscle, 36, bottom plate bed course, 37, protective layer cushion block, 38, additional atress muscle, 39, buckle bolt, 40, location steel sheet, 41, locator seam, 42, side wall atress muscle, 43, truss muscle, 44, bottom plate distribution muscle, 45, stagnant water adhesive tape, 46, coarse surface, 47, channel-section steel is taut, 48, construction joint end cap design steel masterplate, 49, embedded nut, 50, distribution strengthening rib, 51, nut and gasket, 52, medium plate reservation reinforcing bar hole, 53, hang the muscle, 54, go up the exhaust hole of airing exhaust, 55, go up exhaust flue, 56, reinforcing bar anchor plate, 57, prefabricated block, 58, handle hole.
The specific implementation mode is as follows:
example 1:
structural node connection introduction
A folding assembly type structure subway station comprises: roof 1, medium plate 2, bottom plate 3, side wall 4 and heat extraction flue 5, the structure nodal connection:
the bottom plate is connected with the side wall
(1) A construction joint 12 from the bottom plate to the bottom of the negative second floor is of a cast-in-place reinforced concrete structure, and an externally-leaked grouting sleeve 13 is embedded in the construction joint and connected with upper side wall stressed steel bars;
(2) the inner skin of the side wall is a prefabricated block with truss ribs (both stress ribs and distribution ribs are carried), and simultaneously serves as an inner side template, the bottom of the prefabricated block is inserted into a grouting sleeve, the stress ribs are connected by pouring high-efficiency grouting material, the width of the longitudinal blocks is about 2m, and the structure of the distribution ribs among the blocks is reinforced;
(3) and (4) setting a cast-in-place strip on the construction joint, and pouring concrete in the cavity of the side wall to form a side wall laminated structure.
Example 2:
the middle plate is connected with the side wall
(1) Pouring the concrete of the side wall of the negative second floor to the construction joint at the top of the negative second floor, reserving a steel bar connector for the stressed steel bars of the side wall at the construction joint, and connecting the upper steel bars;
(2) the middle plate bottom skin is a precast block with truss ribs and is also used as a bottom skin template, the longitudinal block width is about 2m, the inter-block distribution rib structure is reinforced, and the upper skin steel bars are all bound on site; a middle plate precast block is reserved with a heat exhaust air duct steel bar connecting hole for later installation of a heat exhaust air duct;
(3) pouring the middle plate concrete to the bottom construction joint of the negative layer to form a middle plate superposed structure, embedding an externally-leaked grouting sleeve at the joint, and connecting the upper side wall stress steel bars;
example 3:
the top plate is connected with the side wall
(1) Pouring the side wall concrete of the negative layer to a construction joint at the top of the negative layer, reserving a steel bar connector for the stressed steel bars of the side wall at the construction joint, and connecting the upper steel bars;
(2) the bottom skin of the top plate is a prefabricated block with truss ribs and is used as a bottom skin template, the width of each block is about 2m, the structure of distributed ribs among the blocks is reinforced, and the upper steel bars are bound on site;
(3) and pouring the top plate concrete to form a top plate laminated structure.
Example 4:
the heat exhausting air duct is connected with the middle plate
(1) After the station structure is capped, a heat exhaust air duct at the lower part of the middle plate is installed;
(2) the heat exhaust air duct is prefabricated in an integral U shape, hanging ribs are leaked outside the upper part of the heat exhaust air duct, the heat exhaust air duct penetrates into a reserved hole of the middle plate through jacking equipment, and the upper part of the heat exhaust air duct is fixed by a gasket and a nut;
(3) the cavity is filled with high-efficiency grouting material compactly.
Example 5:
step 1: constructing a waterproof layer of the cushion layer;
after the foundation pit is excavated to the substrate, a cushion layer and a waterproof layer wrapped outside the bottom plate are applied in time;
and a step 2: installing a negative two-layer side wall reinforcing steel bar limiter, embedding a bottom plate and pouring concrete;
reserving a side wall waterproof layer, installing a negative two-layer side wall reinforcing steel bar limiter 11 (fixing a negative two-layer side wall grouting sleeve and a stress reinforcing steel bar), binding bottom plate reinforcing steel bars, embedding lateral support positioning reinforcing steel bars 10 (with a longitudinal distance of 1 m), and pouring bottom plate concrete to a horizontal construction joint at the bottom of the negative two-layer side wall;
step 3: the negative two-layer precast block and the column shaping template 15 are installed and fixed by a lateral bracket 16;
dismantling a third steel support, paving a waterproof layer of the negative second-layer side wall, hoisting a prefabricated block (prefabricated with inner truss ribs) of the negative second-layer side wall and a structural column shaping template 15, fixing a lateral support system, and installing an operation platform;
and step 4: pouring concrete of the side walls and the columns of the negative second layer and placing middle plate precast blocks;
pouring high-strength grouting material into the grouting sleeve of the negative second-layer side wall to ensure the effective connection of stress ribs of the side walls, pouring the negative second-layer side wall (forming a superposed structure) and structural column concrete after the connection precision of the distribution ribs is adjusted, removing the lateral support after pouring to the horizontal construction joint at the top of the negative second layer to reach the strength, erecting a local buckling support 19, and placing a middle plate precast block (bottom belt truss rib prefabrication);
step 5: installing a negative layer side wall reinforcing steel bar limiter, embedding a middle plate and pouring concrete;
the method comprises the following steps of (1) paving and reserving a waterproof layer of a side wall, installing a negative layer side wall reinforcing steel bar limiter (fixing a negative layer side wall grouting sleeve and stressed reinforcing steel bars), binding reinforcing steel bars of a middle plate cast-in-place layer (reserving a heat exhausting duct hole), embedding lateral support positioning reinforcing steel bars (with a longitudinal distance of 1 m), and pouring middle plate concrete to a horizontal construction joint at the bottom of the negative layer;
step 6: installing a layer of prefabricated blocks and a column shaping template, and fixing a lateral bracket;
dismantling a second steel support, laying a side wall waterproof layer on the second steel support, hoisting a prefabricated block (prefabricated with inner truss ribs) and a column shaping template on the second steel support, fixing a lateral support system, and installing an operation platform;
step 7: carrying out concrete pouring on a layer of side walls and columns and placing prefabricated blocks of a top plate;
pouring high-strength grouting material into the negative layer of side wall grouting sleeve to ensure effective connection of the stress ribs of the side walls, pouring a negative layer of side walls (forming a superposed structure) and structural column concrete after the connection precision of the distributed ribs is adjusted, removing the lateral supports after pouring to the horizontal construction joint at the top of the negative layer to reach the strength, erecting local coil buckling supports, and placing a top plate precast block (bottom belt truss rib prefabrication);
step 8: and (3) binding steel bars on the top plate and pouring concrete:
dismantling the first steel support, paving and reserving the waterproof layer of the side wall, binding the steel bars of the cast-in-place layer of the top plate, and pouring concrete;
step 9: earthing 24, restoring the road surface, installing a heat exhaust channel, constructing a platform plate 25 and other internal structures;
laying a roof plate fully covered with a waterproof layer, backfilling and earthing, laying pipelines, recovering the pavement, installing a heat exhaust duct in a station, and constructing internal structures such as a station bedplate and the like;
the whole U-shaped prefabrication of the upper row of hot air ducts, the steel bars leak outwards, the holes of the steel bars of the upper row of hot air ducts are upwards installed through the holes reserved in the middle plate, the holes penetrate through the top surface of the middle plate and are connected in a bolt and gasket mode, the steel bar holes are grouted compactly, and other station table plates and other structures are cast in situ.
Example 6:
the assembly construction method of the subway station with the superposed assembly type structure comprises the following steps:
(1) constructing a waterproof layer of the cushion layer;
after the foundation pit is excavated to the substrate, a cushion layer and a waterproof layer wrapped outside the bottom plate are applied in time;
(2) installing a negative two-layer side wall reinforcing steel bar limiter, embedding a bottom plate and pouring concrete;
reserving a side wall waterproof layer, installing a negative two-layer side wall reinforcing steel bar limiter 11 (fixing a negative two-layer side wall grouting sleeve and a stress reinforcing steel bar), binding bottom plate reinforcing steel bars, embedding lateral support positioning reinforcing steel bars 10 (with a longitudinal distance of 1 m), and pouring bottom plate concrete to a horizontal construction joint at the bottom of the negative two-layer side wall;
(3) the negative two-layer precast block and the column shaping template 15 are installed and fixed by a lateral bracket 16;
dismantling a third steel support, paving a waterproof layer of the negative second-layer side wall, hoisting a prefabricated block (prefabricated with inner truss ribs) of the negative second-layer side wall and a structural column shaping template 15, fixing a lateral support system, and installing an operation platform;
(4) pouring concrete of the side walls and the columns of the negative second layer and placing middle plate precast blocks;
pouring high-strength grouting material into the grouting sleeve of the negative second-layer side wall to ensure the effective connection of stress ribs of the side walls, pouring the negative second-layer side wall (forming a superposed structure) and structural column concrete after the connection precision of the distribution ribs is adjusted, removing the lateral support after pouring to the horizontal construction joint at the top of the negative second layer to reach the strength, erecting a local buckling support 19, and placing a middle plate precast block (bottom belt truss rib prefabrication);
(5) installing a negative layer side wall reinforcing steel bar limiter, embedding a middle plate and pouring concrete;
the method comprises the following steps of (1) paving and reserving a waterproof layer of a side wall, installing a negative layer side wall reinforcing steel bar limiter (fixing a negative layer side wall grouting sleeve and stressed reinforcing steel bars), binding reinforcing steel bars of a middle plate cast-in-place layer (reserving a heat exhausting duct hole), embedding lateral support positioning reinforcing steel bars (with a longitudinal distance of 1 m), and pouring middle plate concrete to a horizontal construction joint at the bottom of the negative layer;
(6) installing a layer of prefabricated blocks and a column shaping template, and fixing a lateral bracket;
dismantling a second steel support, laying a side wall waterproof layer on the second steel support, hoisting a prefabricated block (prefabricated with inner truss ribs) and a column shaping template on the second steel support, fixing a lateral support system, and installing an operation platform;
(7) carrying out concrete pouring on a layer of side walls and columns and placing prefabricated blocks of a top plate;
pouring high-strength grouting material into the negative layer of side wall grouting sleeve to ensure effective connection of the stress ribs of the side walls, pouring a negative layer of side walls (forming a superposed structure) and structural column concrete after the connection precision of the distributed ribs is adjusted, removing the lateral supports after pouring to the horizontal construction joint at the top of the negative layer to reach the strength, erecting local coil buckling supports, and placing a top plate precast block (bottom belt truss rib prefabrication);
(8) and (3) binding steel bars on the top plate and pouring concrete:
dismantling the first steel support, paving and reserving the waterproof layer of the side wall, binding the steel bars of the cast-in-place layer of the top plate, and pouring concrete;
(9) earthing 24, restoring the road surface, installing a heat exhaust channel, constructing a platform plate 25 and other internal structures;
laying a roof plate fully covered with a waterproof layer, backfilling and earthing, laying pipelines, recovering the pavement, installing a heat exhaust duct in a station, and constructing internal structures such as a station bedplate and the like;
the whole U-shaped prefabrication of the upper row of hot air ducts, the steel bars leak outwards, the holes of the steel bars of the upper row of hot air ducts are upwards installed through the holes reserved in the middle plate, the holes penetrate through the top surface of the middle plate and are connected in a bolt and gasket mode, the steel bar holes are grouted compactly, and other station table plates and other structures are cast in situ.
Claims (4)
1. A folding assembly type structure subway station comprises: roof, medium plate, bottom plate, heat extraction wind channel and side wall, characterized by: the bottom plate to two negative layers of bottom construction joint be cast-in-place reinforced concrete structure, the grout sleeve that leaks is pre-buried outward in construction joint department connects upper portion side wall atress reinforcing bar, and the side wall endothelium is the prefabricated section of taking the truss muscle, as inboard template simultaneously, in the grout sleeve is inserted to the bottom, connects the atress reinforcing bar through pouring high-efficient grout material, vertical piecemeal width is about 2m, the interblock distribution muscle structure is strengthened, construction joint upper portion sets up cast-in-place area, pours side wall cavity concrete, forms the side wall coincide structure.
2. A folding assembly construction type subway station as claimed in claim 1, wherein: negative two-layer side wall concrete placement to negative two-layer top construction joint department, construction joint department side wall atress reinforcing bar reserves reinforcing bar connector, connects upper portion side wall atress reinforcing bar, the medium plate end skin be the prefabricated section of taking the truss muscle, as end skin template simultaneously, vertical piecemeal width is about 2m, the interblock distribution muscle structure is strengthened, the equal on-the-spot ligature of epithelium reinforcing bar, the exhaust airway reinforcing bar connecting hole is reserved to the medium plate prefabricated section for later stage installation exhaust airway, medium plate concrete placement to negative one-layer side wall bottom construction joint department, forms the medium plate coincide structure, the pre-buried grout sleeve of leaking outside of seam crossing connects upper portion side wall atress reinforcing bar.
3. A folding assembly construction type subway station as claimed in claim 2, wherein: negative one deck side wall prefabricated section installation, connection and cast-in-place area set up with two layers on the negative side, negative one deck side wall concrete placement to negative one deck top construction joint department, and construction joint department side wall atress reinforcing bar reserves the reinforcing bar connector of plugging into, connects the upper portion reinforcing bar, the roof bottom skin be the prefabricated section of taking the truss muscle, as the bottom skin template simultaneously, vertical piecemeal width is about 2m, the interblock distribution muscle structure is strengthened, the equal on-the-spot ligature of epitheca reinforcing bar, roof concrete placement forms roof superimposed structure.
4. A folding assembly construction type subway station as claimed in claim 3, wherein: after the station structure is closed, install the medium plate lower part the heat extraction wind channel, the heat extraction wind channel be whole U type prefabrication, the muscle is hung to the upper portion hourglass outward, penetrate the heat extraction wind channel through jacking equipment in the medium plate preformed hole, upper portion is fixed with the gasket with the nut, adopts high-efficient grout material packing closely knit in the cavity.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114737608A (en) * | 2022-05-08 | 2022-07-12 | 北京建筑大学 | Superposed underground structure anti-seismic system based on self-resetting breaking columns and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114737608A (en) * | 2022-05-08 | 2022-07-12 | 北京建筑大学 | Superposed underground structure anti-seismic system based on self-resetting breaking columns and construction method |
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