CN109930626B - Large-section multi-cabin cast-in-place comprehensive pipe gallery and construction method thereof - Google Patents
Large-section multi-cabin cast-in-place comprehensive pipe gallery and construction method thereof Download PDFInfo
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- CN109930626B CN109930626B CN201910197036.6A CN201910197036A CN109930626B CN 109930626 B CN109930626 B CN 109930626B CN 201910197036 A CN201910197036 A CN 201910197036A CN 109930626 B CN109930626 B CN 109930626B
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Abstract
The invention relates to a large-section multi-cabin cast-in-place comprehensive pipe gallery which comprises a formwork system, a top moving platform, a protection platform and a reinforcement binding support frame, wherein the formwork system comprises a formwork support frame and a plurality of support frames; the formwork supporting system comprises a foundation pit, a side support, a side formwork, a comprehensive pipe gallery, a first fixing plate, an L-shaped support frame, a support groove, a second fixing plate, an inner formwork, a fixing bolt and a top support; the top moving platform comprises a winch, a moving platform, a prefabricated first sliding rail, a prefabricated second sliding rail, a sliding wheel, a groove, a left gasoline engine, a right gasoline engine and a sliding rail connecting plate; the protection platform comprises an upper protection net, a platform, a lower protection net, a protection net clamping plate, a sliding wheel, a prefabricated third sliding rail and fixing nails. The invention has the beneficial effects that: according to the invention, the side template is provided with the supporting groove, the first fixing plate is arranged on the side template, the supporting groove is used for placing the top end of the side support, and the first fixing plate is embedded in the L-shaped supporting frame, so that the side template can be effectively prevented from moving laterally.
Description
Technical Field
The invention relates to the field of comprehensive pipe galleries, in particular to a large-section multi-cabin cast-in-place comprehensive pipe gallery and a construction method thereof.
Background
The utility tunnel is an underground city pipeline utility tunnel, namely, a tunnel space is built underground the city, various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like are integrated, a special overhaul port, a lifting port and a monitoring system are arranged, unified planning, unified design, unified construction and management are implemented, and the utility tunnel is an important infrastructure and a 'lifeline' for guaranteeing city operation.
At present, the construction of the pipe gallery still has an improvement space, including the aspects of the template, the construction safety protection, the rapid binding of the reinforcing steel bars and the material transportation of the pipe gallery. Because the piping lane is located the underground, cast-in-place piping lane is generally under the inside construction of foundation ditch. The operation space of the foundation pit is small, a large amount of materials cannot be accumulated, and if the materials are accumulated too much, the normal operation of constructors is influenced; the width of the interior of a foundation pit is small, the construction efficiency of the traditional split bolt fixing method is low when a pipe gallery formwork is erected, the split bolts are generally long and cannot be operated normally in the foundation pit, in addition, supports need to be arranged on templates at the bottom during construction of a top panel of the pipe gallery to prevent concrete from falling off, and the traditional full-space support occupies a large space and is low in construction efficiency; when the piping lane is under construction, often have the thing inside the foundation ditch that drops, the thing that drops occupies foundation ditch space on the one hand, and the thing that on the other hand dropped can cause the threat to constructor's safety like the stone.
In summary, it is very important to find a large-section multi-cabin cast-in-place utility tunnel and a construction method thereof, which can transport materials rapidly, can be spliced easily, and does not occupy a large amount of space and can protect safety.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a large-section multi-cabin cast-in-place comprehensive pipe gallery and a construction method thereof.
The large-section multi-cabin cast-in-place comprehensive pipe gallery comprises a formwork system, a top moving platform, a protection platform and a reinforcement binding support frame;
the formwork supporting system comprises a foundation pit, a side support, a side formwork, a comprehensive pipe gallery, a first fixing plate, an L-shaped support frame, a support groove, a second fixing plate, an inner formwork, a fixing bolt and a top support, wherein the side formwork is provided with the support groove, the top end of the side support extends into the support groove, the side support, the side formwork and the bottom surface of the foundation pit form a stable triangular structure, the side formwork is provided with the first fixing plate, the L-shaped support frame is inserted into a gap between the side formwork and the first fixing plate, and the fixing bolt is arranged on a bottom plate of the L-shaped support frame; an L-shaped support frame is inserted into a gap between the inner template and the second fixing plate and is fixed through a fixing bolt, and the inner template supporting the top is arranged;
the top moving platform comprises a winch, a moving platform, a prefabricated first slide rail, a prefabricated second slide rail, a sliding wheel, a groove, a left gasoline engine, a right gasoline engine and a slide rail connecting plate, the prefabricated second slide rail is placed on the ground on two sides of the top of the foundation pit, the sliding wheel of the prefabricated first slide rail is placed in the groove of the prefabricated second slide rail, and the sliding wheel of the moving platform is placed in the groove of the prefabricated first slide rail; the left side and the right side of the moving platform are respectively provided with a left gasoline engine and a right gasoline engine, and the moving platform is provided with a winch; the prefabricated first slide rail is connected through a slide rail connecting plate, and a front gasoline engine and a rear gasoline engine are respectively arranged at the front part and the rear part of the slide rail connecting plate; a comprehensive pipe gallery and a cabin are arranged in the foundation pit;
the protective platform comprises an upper protective net, a platform, a lower protective net, a protective net clamping plate, a sliding wheel, a prefabricated third sliding rail and a fixing nail, the upper protective net and the lower protective net are arranged above the comprehensive pipe gallery, and the upper protective net is positioned in the central part of the protective device; protective net clamping plates are arranged on two sides of the protective net, sliding wheels on the protective net clamping plates are arranged in a prefabricated third sliding rail, and the prefabricated third sliding rail is arranged on the platform and fixed on the platform through fixing nails;
the steel bar binding support frame comprises a sliding fixture, a sliding groove, a cylinder, a support, a bottom plate, a round rod, a string and a sponge, the support is connected to the bottom plate, the support slides left and right in an inner groove of the bottom plate, the sliding groove is formed in the support, the cylinder is arranged in the sliding groove, the sliding fixture with a hollow groove is arranged in the sliding groove, and the hollow groove penetrates through the cylinder; the top of each bracket is provided with a top round hole, and a round rod penetrates through the top round hole to connect the front bracket and the rear bracket together; the distance between the adjacent sliding fixtures is the same as the distance between the steel bars; the bolt hole of the sliding clamp is internally provided with a fixing bolt, the fixing bolt is connected with a sponge through a string, and the sponge is wrapped on the outer surface of the cylinder.
Preferably, the method comprises the following steps: the inner template is provided with bolt holes in advance.
Preferably, the method comprises the following steps: and the top support is provided with a telescopic thin rod and a telescopic thick rod.
Preferably, the method comprises the following steps: the prefabricated second sliding rail is spliced through the splicing plates and the fixing bolts.
Preferably, the method comprises the following steps: the upper protection net clamping plates are arranged on two sides of the upper protection net, the lower protection net clamping plates are arranged on two sides of the lower protection net, the caulking grooves in the upper protection net clamping plates are matched with the clamping plate embedding bulges in the prefabricated third slide rail, the lower protection net clamping plates are connected with the sliding wheels through wheel shafts, and the sliding wheels are arranged on the bottom sliding plates of the prefabricated third slide rail.
Preferably, the method comprises the following steps: one end of the sliding clamp is provided with a steel bar positioning groove; the string is arranged in the caulking of the sliding clamp.
The construction method of the large-section multi-cabin cast-in-place comprehensive pipe gallery comprises the following steps:
1) excavating a prefabricated third slide rail placing platform; downwards excavating a platform for placing a prefabricated third sliding rail to the foundation pit;
2) prefabricating a third slide rail and installing a protective net; placing a prefabricated third slide rail on the platform, driving fixing nails into through holes reserved in the prefabricated third slide rail, and splicing the caulking grooves of the protective net and the clamping plate embedding bulges together;
3) constructing a slide rail; placing prefabricated second slide rails on the ground on two sides of the top of the foundation pit, and then placing the prefabricated first slide rails on the prefabricated second slide rails to enable the sliding wheels at the bottoms of the prefabricated first slide rails to be placed in the grooves of the prefabricated second slide rails;
4) constructing a transfer platform; mounting a moving platform on the prefabricated first slide rail, and enabling a sliding wheel at the bottom of the moving platform to be positioned in a groove of the prefabricated first slide rail;
5) transporting construction materials; the construction materials outside the foundation pit are moved to a designated place through the moving platform, and the materials are placed down by a winch on the moving platform; moving the protective net to two sides before lowering;
6) adjusting a steel bar binding support frame; placing the bottom plates at two ends of the steel bars to be bound, inserting the supports from the end parts of the bottom plates, adjusting the distance between the supports on the same bottom plate to ensure that the distance between the supports is the same as the width of the designed steel bars, and then penetrating the round rods through the top round holes of the supports to ensure that the supports on the same side on the two bottom plates are connected together;
7) adjusting a sliding clamp; sliding the sliding clamps along the cylinders to enable the distance between the sliding clamps to be the same as the designed longitudinal steel bar distance, then rotating the fixing bolts to drive the thin ropes on the fixing bolts to rotate, enabling the thin ropes to contract and tighten the sponge on the sliding clamps, and fixing the sliding clamps on the bracket;
8) binding steel bars; placing the longitudinal steel bars in the steel bar positioning grooves, and then binding the vertical steel bars; after the steel bars are bound, removing the steel bar binding support frame;
9) concrete pouring is carried out on a panel at the bottom of the pipe gallery; pouring a panel at the bottom of the pipe gallery;
10) erecting templates of a side panel and a top panel of the pipe gallery; the top end of the side support extends into the support groove, the side support, the side template and the bottom surface of the foundation pit form a stable triangular structure, a first fixing plate is arranged on the side template, the L-shaped support frame is inserted into a gap between the side template and the first fixing plate, and then a fixing bolt is driven into a bottom plate of the L-shaped support frame to fix the L-shaped support frame; inserting an L-shaped support frame into a gap between the inner template and the second fixing plate in the same way as the side template, fixing the L-shaped support frame by using a fixing bolt, and then arranging a top support to support the inner template on the top;
11) concrete pouring is carried out on the side panel and the top panel of the pipe gallery; carrying out concrete pouring on a side panel and a top panel of the pipe gallery;
12) removing the template; and after the concrete is cured to the standard strength, removing the outer formwork, removing the side supports, removing the L-shaped support frames, removing the top supports on the inner formwork, and finally removing the side formworks and the inner formwork.
The invention has the beneficial effects that:
(1) according to the invention, the side template is provided with the supporting groove, the first fixing plate is arranged on the side template, the supporting groove is used for placing the top end of the side support, and the first fixing plate is embedded in the L-shaped supporting frame, so that the side template can be effectively prevented from moving laterally.
(2) The top support designed by the invention is telescopic, and when the template is required to be disassembled, the next disassembling operation can be carried out only by inwards retracting the top support.
(3) The moving platform designed by the invention can be distributed over the whole construction section, and can quickly and safely convey materials into a foundation pit.
(4) The protective net of the protective platform designed by the invention can move, so that the protective net can protect construction from being influenced by off-site factors; when the materials need to be conveyed, the protective net can be opened and conveyed from the opening.
(5) The reinforcement binding support frame designed by the invention can fix the longitudinal reinforcements with any height, and then the reinforcement binding can be quickly finished by binding the vertical reinforcements.
Drawings
FIG. 1 is a structural view of a large-section multi-cabin cast-in-place comprehensive pipe rack;
FIG. 2 is a schematic view of a formwork system of the large-section multi-cabin cast-in-place utility tunnel of FIG. 1;
FIG. 3 is a schematic view of the large-section multi-cabin cast-in-place utility tunnel transfer platform of FIG. 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the protective platform of FIG. 1;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a detail view taken at splice A in FIG. 5;
FIG. 8 is a schematic view of a reinforcement cage;
FIG. 9 is a top view of FIG. 8;
FIG. 10 is a top view of the glide fixture and bracket of FIG. 8;
fig. 11 is a side view of the base plate.
Description of reference numerals: 1, a foundation pit; 2-side support; 3-side template; 4, comprehensive pipe gallery; 5-a first fixing plate; 6-L-shaped support frame; 7-supporting the trough; 8-a second fixing plate; 9-inner template; 10-fixing the bolt; 11-top bracing; 12-a telescopic thin rod; 13-telescopic thick rod; 14-a winch; 15-moving platform; 16, prefabricating a first sliding rail; 17-prefabricating a second slide rail; 18-a riding wheel; 19-a groove; 20-left gasoline engine; 21-right gasoline engine; 22-lifting rope; 23-cabin; 24-splice plates; 25-upper protective net; 26-a platform; 27-lower layer protective net; 28-protective net splint; 29-axle; 30-prefabricating a third slide rail; 31-fixing nails; 32-upper layer protection net splint; 33-lower layer protection net splint; 34-splint embedding protrusion; 35-bottom slide plate; 36-caulking groove; 37-a steel bar positioning groove; 38-sliding clamp; 39-a sliding groove; 40-cylinder; 41-hollow groove; 42-a bracket; 43-caulking; 44-bolt holes; 45-a bottom plate; 46-top circular hole; 47-inner groove; 48-round bar; 49-universal wheel; 50-a slide rail connecting plate; 51-front gasoline engine; 52-rear gasoline engine; 53-string; 54-sponge.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Cast-in-place utility tunnel in big section many cabins, including formwork system, top move platform, protection platform and reinforcement support frame.
The formwork supporting system comprises a foundation pit 1, side supports 2, side formworks 3, a comprehensive pipe gallery 4, a first fixing plate 5, an L-shaped support frame 6, support grooves 7, a second fixing plate 8, an inner formwork 9, fixing bolts 10 and top supports 11, wherein the side formworks 3 are provided with the support grooves 7, the top ends of the side supports 2 extend into the support grooves 7, and the side supports 2 are prevented from sliding; the side supports 2, the side templates 3 and the bottom surface of the foundation pit 1 form a stable triangular structure, the side templates 3 are provided with first fixing plates 5, the L-shaped support frames 6 are inserted into gaps between the side templates 3 and the first fixing plates 5, fixing bolts 10 are driven into the bottom plates of the L-shaped support frames 6 to fix the L-shaped support frames, and finally the side supports 2 and the L-shaped support frames 6 are combined to effectively prevent the side templates 3 from deviating; in the same way as the side formworks 3, the L-shaped supporting frame 6 is inserted into the gap between the inner formworks 9 and the second fixing plate 8 and is fixed through the fixing bolt 10, the inner formworks on two sides are prevented from moving, and the inner formworks 9 on the top are supported by the top supports 11. And bolt holes are preset in the inner template 9 and used for fixing the L-shaped support frame 6. The top support 11 is provided with a telescopic thin rod 12 and a telescopic thick rod 13.
The top transporting platform comprises a foundation pit 1, a winch 14, a transporting platform 15, a prefabricated first slide rail 16, a prefabricated second slide rail 17, a sliding wheel 18, a groove 19, a left gasoline engine 20, a right gasoline engine 21 and a slide rail connecting plate 50, wherein the prefabricated second slide rail 17 is placed on the ground on two sides of the top of the foundation pit 1, the sliding wheel 18 of the prefabricated first slide rail 16 is placed in the groove 19 of the prefabricated second slide rail 17, so that the prefabricated first slide rail 16 can move back and forth, and the sliding wheel 18 of the transporting platform 15 is placed in the groove 19 of the prefabricated first slide rail 16, so that the transporting platform 15 can slide left and right; the left side and the right side of the moving platform 15 are respectively provided with a left gasoline engine 20 and a right gasoline engine 21, and the moving platform 15 is provided with a winch 14; the prefabricated first slide rail 16 is connected through a slide rail connecting plate 50, and the front part and the rear part of the slide rail connecting plate 50 are respectively provided with a front gasoline engine 51 and a rear gasoline engine 52; the foundation pit 1 is internally provided with a comprehensive pipe gallery 4 and a cabin 23. The left gasoline engine 20 is used for pushing the moving platform 15 to move to the left, the right gasoline engine 21 is used for pushing the moving platform 15 to move to the right, and the left engine and the right engine are not started at the same time; in a similar way, the front gasoline engine 51 pushes the prefabricated first slide rail 16 to move forwards, the rear gasoline engine 52 pushes the prefabricated first slide rail 16 to move backwards, the moving directions of the prefabricated first slide rail 16 and the moving platform 15 are controlled, the transported materials can be moved to the moving platform from one side and then to a designated place throughout the whole pipe gallery construction site, and then the materials are discharged by the winch 14. The prefabricated second slide rail 17 is spliced through the splicing plates 24 and the fixing bolts 10 to prolong the length of the prefabricated second slide rail 17.
The protective platform comprises a foundation pit 1, an upper layer protective net 25, a platform 26, a lower layer protective net 27, a protective net clamping plate 28, a sliding wheel 18, a prefabricated third sliding rail 30 and a fixing nail 31, wherein the upper layer protective net 25 and the lower layer protective net 27 are arranged above the comprehensive pipe gallery 4, the upper layer protective net 25 is positioned in the central part of the protective device and can be pushed and pulled forwards and backwards, so that the central part of the protective device can be opened and closed as required; two sides of the protective net are provided with protective net clamping plates 28, the sliding wheels 18 on the protective net clamping plates 28 are arranged in prefabricated third sliding rails 30, and the prefabricated third sliding rails 30 are arranged on the platform 26 and fixed on the platform 26 through fixing nails 31. The upper protective net clamping plates 32 are arranged on two sides of the upper protective net 25, and the lower protective net clamping plates 33 are arranged on two sides of the lower protective net 27; the caulking groove 36 on the upper layer protective screening clamping plate 32 is matched with the clamping plate embedding protrusion 34 on the prefabricated third sliding rail 30, and the size of the caulking groove 36 is slightly larger than that of the clamping plate embedding protrusion 34; the lower protective net splint 33 is connected with the sliding wheel 18 through the wheel shaft 29, and the sliding wheel 18 is arranged on the bottom sliding plate 35 of the prefabricated third sliding rail 30. The upper layer protective net 25 and the lower layer protective net 27 can move together on the prefabricated third slide rail 30, and the upper layer protective net 25 can be pushed and pulled towards two sides relative to the lower layer protective net 27, similar to the principle of a sliding door. The protective net can move back and forth along with the construction progress.
The steel bar binding support frame comprises a sliding fixture 38, a sliding groove 39, a column 40, a support 42, a bottom plate 45, a round rod 48, a string 53 and a sponge 54, wherein the support 42 is connected to the bottom plate 45, the support 42 can slide left and right on an inner groove 47 of the bottom plate 45, the sliding groove 39 is formed in the support 42, the column 40 is arranged in the sliding groove, the sliding fixture 38 with a hollow groove 41 is arranged in the sliding groove 39, and the hollow groove 41 penetrates through the column 40 to prevent the sliding fixture 38 from inclining in the moving process; a top round hole 46 is formed in the top of the bracket 42, and a round rod 48 penetrates through the top round hole 46 to connect the front bracket 42 and the rear bracket 42 together; adjusting the sliding clamps 38 according to the designed steel bar spacing, wherein the distance between the adjacent sliding clamps 38 is the same as the steel bar spacing; the fixing bolt 10 is arranged in the bolt hole 44 of the sliding clamp 38, the fixing bolt 10 is connected with the sponge 54 through the string 53, and the sponge 54 is wrapped on the outer surface of the cylinder 40. The fixing bolt 10 is rotated to make the string 53 contract and tighten the sponge 54, and the sponge 54 is tightly attached to fix the sliding fixture on the column 40. A steel bar positioning groove 37 is formed in one end of the sliding clamp 38; the string 53 is placed in the caulking 43 of the slip clamp 38. The bottom of the bottom plate 45 is provided with universal wheels 49.
The construction method of the large-section multi-cabin cast-in-place comprehensive pipe gallery comprises the following steps:
(1) and excavating a prefabricated third slide rail placing platform. And (5) downwards excavating a platform towards the foundation pit 1 for placing the prefabricated third slide rail 30.
(2) And (6) mounting a prefabricated third sliding rail and a protective net. A prefabricated third slide rail is placed on the platform 26, and fixing nails 31 are driven into through holes reserved in the prefabricated third slide rail, so that the prefabricated third slide rail is prevented from sliding, and accidents are prevented. Then, the caulking groove 36 of the protection net and the splint fitting protrusion 34 are spliced together.
(3) And (5) constructing the sliding rail. And (3) placing prefabricated second slide rails 17 on the ground on two sides of the top of the foundation pit 1, and then placing the prefabricated first slide rails 16 on the prefabricated second slide rails to enable the sliding wheels 18 at the bottoms of the prefabricated first slide rails to be placed in the grooves 19 of the prefabricated second slide rails.
(4) And (5) construction of the moving and transporting platform. And (3) installing a moving platform 15 on the prefabricated first slide rail, so that a sliding wheel at the bottom of the moving platform is positioned in a groove of the prefabricated first slide rail.
(5) And (5) transporting construction materials. The construction materials outside the foundation pit are moved to a designated place through the moving platform, and the materials are placed downwards through the winch 14 on the moving platform. Before the protection net is put down, the protection net needs to be moved towards two sides, otherwise, materials are shielded by the protection net and cannot be put down.
(6) And adjusting the steel bar binding support frame. The bottom plates 45 are placed at two ends of the steel bars to be bound, then the supports 42 are inserted from the end parts of the bottom plates and the distance of the supports on the same bottom plate is adjusted, so that the distance between the supports is the same as the width of the designed steel bars, and then the round rods 48 penetrate through the round holes at the tops of the supports 42, so that the supports on the same side on the two bottom plates are connected together.
(7) And adjusting the sliding fixture. The sliding fixture 38 is slid up and down along the column 40 to make the distance between the sliding fixtures the same as the designed longitudinal steel bar distance, and then the fixing bolt 10 is rotated to drive the string 53 on the fixing bolt to rotate, so that the string contracts to tighten the sponge 54 on the sliding fixture, and the sliding fixture is fixed on the bracket 42.
(8) And (5) binding steel bars. The longitudinal reinforcing steel bars are placed in the reinforcing steel bar positioning grooves 37, and then the binding of the vertical reinforcing steel bars is carried out. And after the steel bars are bound, removing the steel bar binding support frame.
(9) And (5) concrete pouring of the bottom panel of the pipe gallery. And pouring the panel at the bottom of the pipe gallery by using a concrete grouting machine.
(10) And erecting templates of the side panel and the top panel of the pipe gallery. Stretch into support groove 7 with the top of side support 2, prevent that the side support from sliding, the side support forms stable triangular structure with side form 3 and foundation ditch 1 bottom surface, sets up first fixed plate 5 on the side form, inserts L type support frame 6 in the clearance of side form and first fixed plate, then squeezes into fixing bolt 10 on the bottom plate of L type support frame to it is fixed, finally combines the effect of side support and L type support frame, can effectively prevent the skew of side form. In the same manner as the side mold plates, an L-shaped support frame is inserted into a gap between the inner mold plate 9 and the second fixing plate 8 and fixed by fixing bolts to prevent the inner mold plates on both sides from moving, and then a top support 11 is provided for supporting the inner mold plate on the top.
(11) Concrete pouring is carried out on the side panel and the top panel of the pipe gallery. And (5) carrying out concrete pouring on the side panel and the top panel of the pipe gallery by using a concrete grouting machine.
(12) And (5) removing the template. After the concrete is cured to the standard strength, the outer formwork is dismantled, the side supports 2 are firstly dismantled, then the L-shaped support frames 6 are dismantled, the top supports 11 on the inner formwork 9 are dismantled, and finally the side formworks 3 and the inner formwork 9 are dismantled.
Claims (3)
1. A large-section multi-cabin cast-in-place comprehensive pipe gallery is characterized by comprising a formwork system, a top moving platform, a protection platform and a reinforcement binding support frame;
the formwork supporting system comprises a foundation pit (1), side supports (2), side formworks (3), a comprehensive pipe gallery (4), a first fixing plate (5), an L-shaped support frame (6), support grooves (7), a second fixing plate (8), an inner formwork (9), fixing bolts (10) and a top support (11), wherein the side formworks (3) are provided with the support grooves (7), the top ends of the side supports (2) extend into the support grooves (7), the side supports (2), the side formworks (3) and the bottom surface of the foundation pit (1) form a stable triangular structure, the side formworks (3) are provided with the first fixing plates (5), the L-shaped support frame (6) is inserted into a gap between the side formworks (3) and the first fixing plates (5), and the bottom plate of the L-shaped support frame (6) is provided with the fixing bolts (10); an L-shaped support frame (6) is inserted into a gap between the inner template (9) and the second fixing plate (8) and is fixed through a fixing bolt (10), and a top support (11) is arranged to support the inner template (9) on the top; the top support (11) is provided with a telescopic thin rod (12) and a telescopic thick rod (13);
the top moving platform comprises a winch (14), a moving platform (15), a prefabricated first slide rail (16), a prefabricated second slide rail (17), a sliding wheel (18), a groove (19), a left gasoline engine (20), a right gasoline engine (21) and a slide rail connecting plate (50), the prefabricated second slide rail (17) is placed on the ground on two sides of the top of the foundation pit (1), the prefabricated second slide rail (17) is spliced through a splicing plate (24) and a fixing bolt (10), the sliding wheel (18) of the prefabricated first slide rail (16) is placed in the groove (19) of the prefabricated second slide rail (17), and the sliding wheel (18) of the moving platform (15) is placed in the groove (19) of the prefabricated first slide rail (16); the left side and the right side of the moving platform (15) are respectively provided with a left gasoline engine (20) and a right gasoline engine (21), and the moving platform (15) is provided with a winch (14); the prefabricated first slide rail (16) is connected through a slide rail connecting plate (50), and the front part and the rear part of the slide rail connecting plate (50) are respectively provided with a front gasoline engine (51) and a rear gasoline engine (52); a comprehensive pipe gallery (4) and a cabin (23) are arranged in the foundation pit (1); the protective platform comprises an upper protective net (25), a platform (26), a lower protective net (27), a protective net clamping plate (28), a sliding wheel (18), a prefabricated third sliding rail (30) and fixing nails (31), the upper protective net (25) and the lower protective net (27) are arranged above the comprehensive pipe rack (4), and the upper protective net (25) is located in the central part of the protective device; protective net clamping plates (28) are arranged on two sides of the protective net, sliding wheels (18) on the protective net clamping plates (28) are arranged in prefabricated third sliding rails (30), and the prefabricated third sliding rails (30) are arranged on the platform (26) and fixed on the platform (26) through fixing nails (31); an upper-layer protective net clamping plate (32) is arranged on each of two sides of the upper-layer protective net (25), a lower-layer protective net clamping plate (33) is arranged on each of two sides of the lower-layer protective net (27), an embedded groove (36) in each upper-layer protective net clamping plate (32) is matched with a clamping plate embedding bulge (34) in each prefabricated third sliding rail (30), each lower-layer protective net clamping plate (33) is connected with a sliding wheel (18) through a wheel shaft (29), and each sliding wheel (18) is arranged on a bottom sliding plate (35) of each prefabricated third sliding rail (30);
the steel bar binding support frame comprises a sliding fixture (38), a sliding groove (39), a cylinder (40), a support (42), a bottom plate (45), a round rod (48), a string (53) and a sponge (54), wherein the support (42) is connected to the bottom plate (45), the support (42) slides left and right on an inner groove (47) of the bottom plate (45), the sliding groove (39) is formed in the support (42), the cylinder (40) is arranged in the sliding groove, the sliding fixture (38) with a hollow groove (41) is arranged in the sliding groove (39), and the hollow groove (41) penetrates through the cylinder (40); a top round hole (46) is formed in the top of the support (42), and a round rod (48) penetrates through the top round hole (46) to connect the front support and the rear support (42) together; the distance between the adjacent sliding fixtures (38) is the same as the distance between the steel bars; a fixing bolt (10) is arranged in a bolt hole (44) of the sliding clamp (38), the fixing bolt (10) is connected with a sponge (54) through a string (53), and the sponge (54) is wrapped on the outer surface of the cylinder (40); one end of the sliding clamp (38) is provided with a steel bar positioning groove (37); the string (53) is arranged in the caulking (43) of the sliding clamp (38).
2. The large-section multi-cabin cast-in-place utility tunnel according to claim 1, characterized in that bolt holes are preset on the inner formworks (9).
3. A construction method of a large-section multi-cabin cast-in-place utility tunnel according to claim 1, characterized by comprising the following steps:
1) excavating a prefabricated third slide rail placing platform; downwards excavating a platform to the foundation pit (1) for placing a prefabricated third sliding rail (30);
2) prefabricating a third slide rail and installing a protective net; placing a prefabricated third slide rail (30) on the platform (26), driving fixing nails (31) into through holes reserved in the prefabricated third slide rail, and splicing the caulking grooves (36) of the protective net and the clamping plate embedding bulges (34) together;
3) constructing a slide rail; placing prefabricated second slide rails (17) on the ground on two sides of the top of the foundation pit (1), then placing the prefabricated first slide rails (16) on the prefabricated second slide rails (17), and placing sliding wheels (18) at the bottoms of the prefabricated first slide rails (16) in grooves (19) of the prefabricated second slide rails (17);
4) constructing a transfer platform; mounting a moving platform (15) on a prefabricated first sliding rail (16), and enabling a sliding wheel (18) at the bottom of the moving platform (15) to be positioned in a groove (19) of the prefabricated first sliding rail (16);
5) transporting construction materials; the construction materials outside the foundation pit are moved to a designated place through a moving platform (15), and the materials are placed downwards through a winch (14) on the moving platform (15); moving the protective net to two sides before lowering;
6) adjusting a steel bar binding support frame; placing bottom plates (45) at two ends of a steel bar to be bound, inserting the supports (42) from the ends of the bottom plates, adjusting the distance between the supports on the same bottom plate to enable the distance between the supports to be the same as the width of the designed steel bar, and then enabling the round rods (48) to penetrate through round holes in the tops of the supports (42) to enable the supports on the same side on the two bottom plates to be connected together;
7) adjusting a sliding clamp; sliding the sliding fixture (38) along the cylinder (40) to enable the distance between the sliding fixture to be the same as the designed longitudinal steel bar distance, then rotating the fixing bolt (10) to drive the string (53) on the fixing bolt to rotate, enabling the string to contract to tighten the sponge (54) on the sliding fixture, and fixing the sliding fixture on the bracket (42);
8) binding steel bars; placing the longitudinal steel bars in the steel bar positioning grooves (37), and then binding the vertical steel bars; after the steel bars are bound, removing the steel bar binding support frame;
9) concrete pouring is carried out on a panel at the bottom of the pipe gallery; pouring a panel at the bottom of the pipe gallery;
10) erecting templates of a side panel and a top panel of the pipe gallery; the top end of a side support (2) extends into a support groove (7), the side support (2), a side template (3) and the bottom surface of a foundation pit (1) form a stable triangular structure, a first fixing plate (5) is arranged on the side template (3), an L-shaped support frame (6) is inserted into a gap between the side template (3) and the first fixing plate (5), and then a fixing bolt (10) is driven into a bottom plate of the L-shaped support frame (6) to fix the L-shaped support frame; inserting an L-shaped support frame (6) into a gap between an inner template (9) and a second fixing plate (8) in the same way as the side templates, fixing the L-shaped support frame by using a fixing bolt (10), and then arranging a top support (11) to support the inner template (9) at the top;
11) concrete pouring is carried out on the side panel and the top panel of the pipe gallery; carrying out concrete pouring on a side panel and a top panel of the pipe gallery;
12) removing the template; after the concrete is cured to the standard strength, the outer formwork is dismantled, the side supports (2) are firstly dismantled, then the L-shaped support frames (6) are dismantled, the top supports (11) on the inner formwork (9) are dismantled, and finally the side formworks (3) and the inner formwork (9) are dismantled.
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| KR20070115112A (en) * | 2006-05-30 | 2007-12-05 | 삼성엔지니어링 주식회사 | Construction method for utility-pipe conduit |
| CN206971270U (en) * | 2017-07-25 | 2018-02-06 | 中国建筑第八工程局有限公司 | Exterior wall formwork system in underground pipe gallery cast-in-place construction |
| CN107882064A (en) * | 2017-10-30 | 2018-04-06 | 成都建工路桥建设有限公司 | A kind of formwork jumbo and slding form operation method for pipe gallery cast-in-place concrete slding form operation |
| CN109339101A (en) * | 2018-11-21 | 2019-02-15 | 杭州江润科技有限公司 | Cast-in-place pipe gallery and construction method |
| CN209989838U (en) * | 2019-03-15 | 2020-01-24 | 安徽省公路桥梁工程有限公司 | Cast-in-place utility tunnel in big many cabins of section |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070115112A (en) * | 2006-05-30 | 2007-12-05 | 삼성엔지니어링 주식회사 | Construction method for utility-pipe conduit |
| CN206971270U (en) * | 2017-07-25 | 2018-02-06 | 中国建筑第八工程局有限公司 | Exterior wall formwork system in underground pipe gallery cast-in-place construction |
| CN107882064A (en) * | 2017-10-30 | 2018-04-06 | 成都建工路桥建设有限公司 | A kind of formwork jumbo and slding form operation method for pipe gallery cast-in-place concrete slding form operation |
| CN109339101A (en) * | 2018-11-21 | 2019-02-15 | 杭州江润科技有限公司 | Cast-in-place pipe gallery and construction method |
| CN209989838U (en) * | 2019-03-15 | 2020-01-24 | 安徽省公路桥梁工程有限公司 | Cast-in-place utility tunnel in big many cabins of section |
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