CN111409191A - Shield segment manufacturing process - Google Patents
Shield segment manufacturing process Download PDFInfo
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- CN111409191A CN111409191A CN202010232944.7A CN202010232944A CN111409191A CN 111409191 A CN111409191 A CN 111409191A CN 202010232944 A CN202010232944 A CN 202010232944A CN 111409191 A CN111409191 A CN 111409191A
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- Prior art keywords
- plate
- arc
- bottom plate
- shaped bottom
- shield segment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
- B28B23/024—Supporting means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/086—Methods of making concrete lining segments
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a shield segment manufacturing process, which comprises the following steps: s1, binding a reinforcement cage; and binding the reinforcing steel bars to form a reinforcing cage. S2, positioning the reinforcement cage; the locating rack comprises a supporting plate, upright posts vertically fixed on the supporting plate and an arc-shaped bottom plate arranged between the two upright posts. The bellied one side of arc bottom plate is connected in the top of stand, and arc bottom plate both ends are fixed with along vertical curb plate. A plurality of reinforcement cages are placed on the arc-shaped top plate, and the positions of the reinforcement cages are locked. S3, pouring concrete; and selecting an arc-shaped top plate, and placing the top plate above the side plates for locking. The positions of the top plate corresponding to every two adjacent steel reinforcement cages are provided with sockets which are parallel to the cross shaft. And after concrete is poured, steel plates are respectively inserted into the sockets. S4, shaping and demolding; after the concrete is initially set, pulling out the steel plate; and (4) removing the top plate, and taking out the shield segment from the arc-shaped bottom plate and the side plate. The shield segment splicing method has the effect of improving the splicing property of adjacent shield segments.
Description
Technical Field
The invention relates to a shield segment in tunnel construction, in particular to a shield segment manufacturing process.
Background
The shield segment is a main assembly component for shield construction, is the innermost barrier of the tunnel and plays a role in resisting soil layer pressure, underground water pressure and some special loads. The shield segment is a permanent lining structure of a shield tunnel. In shield construction, a plurality of shield segments are required to be spliced to form a cover body with a major arc or a circular arc, so that the rails of the tunnel are covered.
The shield segment is divided into several uniform segments by the existing shield segment manufacturing method, the shield segments are independently poured, and then the shield segments positioned in the same circle are spliced to form the shield segment in site construction. According to the specification of GBJ321-90 'quality inspection and evaluation standard of precast concrete members', after the splicing of multiple shield segments belonging to the same shield body is completed, the gap between adjacent shield segments cannot exceed 2 mm.
It is needed to provide a shield segment manufacturing process, which can improve the splicing compatibility of adjacent shield segments in the same segment of shield body.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a shield segment manufacturing process which has the effect of improving the conformity of adjacent shield segments.
The above object of the present invention is achieved by the following technical solutions:
a shield segment manufacturing process comprises the following steps:
s1, binding a reinforcement cage;
reinforcing steel bars are bound according to the design of the shield segment to form a reinforcing cage;
s2, positioning the reinforcement cage;
selecting a positioning frame, wherein the positioning frame comprises a supporting plate, stand columns vertically fixed on the supporting plate and an arc-shaped bottom plate arranged between the two stand columns; one side of the bulge of the arc-shaped bottom plate is connected to the top of the upright post, and two ends of the arc-shaped bottom plate along the axial direction are fixed with side plates along the vertical direction; placing a plurality of reinforcement cages in a space formed by the arc-shaped top plate and the two side plates, and positioning and locking the positions of the reinforcement cages;
s3, pouring concrete;
selecting a top plate according to the positioning frame, wherein the top plate is arranged in an arc shape and can completely cover the top of a space formed by the arc-shaped bottom plate and the two side plates; placing the top plate above the side plate and locking the position of the top plate; the positions, corresponding to every two adjacent reinforcement cages, on the top plate are provided with spigots which are parallel to the transverse shaft; the opening length of the socket is the same as the vertical distance of one side of the two side plates, and the opening width of the socket is not more than 2 mm;
pouring concrete through one end of a channel formed by the arc-shaped bottom plate, the two side plates and the top plate, and stopping pouring when the concrete is level with the other end of the channel; taking steel plates and respectively inserting the steel plates into corresponding sockets;
s4, shaping and demolding;
after the concrete is initially set, pulling out the steel plate; and (4) removing the top plate, and taking out the shield segment from the arc-shaped bottom plate and the side plate.
Through adopting above-mentioned technical scheme, can pour simultaneously with the shield section of jurisdiction of steel reinforcement cage quantity unanimity on same locating rack, and male steel sheet thickness is less than 2mm in the socket, so must make the interval between two adjacent shield sections of jurisdiction be less than 2mm to can improve the degree of agreeing with between the adjacent shield section of jurisdiction.
The present invention in a preferred example may be further configured to: in the positioning of the reinforcement cage of S2, the number of the upright posts is two, a horizontal cross shaft is rotatably connected between the two upright posts, and one end of the cross shaft is connected with a motor; the arc-shaped bottom plate is fixedly connected to the cross shaft; in the shaping and demolding of S4, after the top plate is removed, the starting motor drives the arc-shaped bottom plate to rotate, so that the shield segment is separated from the space between the two side plates.
Through adopting above-mentioned technical scheme, the drawing of patterns process need utilize high-pressure air gun to assist usually, makes the section of jurisdiction of ordering downwards through rotating the cross axle to utilize the gravity of shield structure section of jurisdiction, and then the drawing of patterns of the shield structure section of jurisdiction of being convenient for has improved production efficiency.
The present invention in a preferred example may be further configured to: in the positioning of the reinforcement cage of S2, a lifting plate is arranged above the supporting plate, the lifting plate is parallel to the supporting plate, and two upright posts penetrate through the lifting plate; the lifting plate is connected with a lifting mechanism for driving the lifting plate to move up and down.
Through adopting above-mentioned technical scheme, when the shield constructs the section of jurisdiction and breaks away from between arc bottom plate and the curb plate, wherein the shield that the lifter plate will break away from constructs the section of jurisdiction and removes the below to the curb plate bottom to be convenient for construct the transport of section of jurisdiction. If the shield segment can not be completely staggered with the arc-shaped bottom plate after being separated, the arc-shaped bottom plate can only be rotated to the original position with the upward opening and then taken out. By means of the arrangement, manufacturing efficiency can be improved.
The present invention in a preferred example may be further configured to: the two lifting mechanisms are arranged on two sides of the supporting plate and are arranged corresponding to the upright posts; the lifting mechanism comprises a fixed pulley and winches, wherein the fixed pulley is rotatably connected to one side, which deviates from the upright column, of the upright column, the winches are positioned on two sides of the supporting plate, and ropes on the winches pass around the fixed pulley and are fixed at the end parts of the lifting plate.
Through adopting above-mentioned technical scheme, improved the structural stability in the lifter plate motion process to reduce the damage to the shield constructs the section of jurisdiction.
The present invention in a preferred example may be further configured to: in the positioning of the reinforcement cage of S2, three reinforcement cages are placed on the arc-shaped bottom plate, and a concrete cushion block is arranged below the reinforcement cage in the middle; and a positioning assembly is arranged between the two reinforcement cages positioned at the two ends and the arc-shaped bottom plate.
Through adopting above-mentioned technical scheme, set up three steel reinforcement cage and be in order to avoid steel reinforcement cage quantity too much to lead to the unable fine pouring of concrete and smash. Wherein, the steel reinforcement cage that is located the centre is the level to prevent that the concrete cushion can guarantee the concrete protection layer thickness.
The present invention in a preferred example may be further configured to: the positioning assembly comprises a groove arranged on the concave side of the arc-shaped bottom plate, a circular rotating plate inserted in the groove, a fixed rod fixed on one side of the rotating plate far away from the center of the arc-shaped bottom plate, and a steel bar fixture connected to one side of the rotating plate facing the center of the arc-shaped bottom plate; the fixed rod is arranged perpendicular to the rotating plate and penetrates through the arc-shaped bottom plate; one end of the reinforcing steel bar clamp is in threaded fit with the rotating plate; during installation, the steel bar clamp is clamped on steel bars of the steel bar cage, and then the steel bar cage is placed on the arc-shaped bottom plate, so that the connecting piece corresponds to the rotating plate; the fixed rod is rotated to rotate the rotating plate, so that the connecting rod and the rotating plate are fixed through threads.
Through adopting above-mentioned technical scheme, convenient operation is swift, and the drawing of patterns in the later stage of being convenient for can not cause big influence to the outside roughness of shield structure section of jurisdiction yet.
The present invention in a preferred example may be further configured to: when the connecting rod and the rotating plate are fixed, the threads on the connecting rod completely enter the rotating plate.
Through adopting above-mentioned technical scheme for can not contact between the screw thread on concrete and the connecting rod, thereby avoided appearing the condition of mechanical interlock between connecting rod and the shield structure section of jurisdiction.
The present invention in a preferred example may be further configured to: in the pouring concrete of S3, lateral limiting plates are fixed at two ends of the top plate along the axial direction, and top limiting plates are fixed at two sides of the opening position on the top plate; after the top plate is covered above the arc-shaped top plate, the two side plates are positioned between the two lateral limiting plates, and the two top limiting plates are placed at the tops of the two side plates.
Through adopting above-mentioned technical scheme, be convenient for fix a position the roof to seal the space top that arc bottom plate and curb plate formed better.
In summary, the invention includes at least one of the following beneficial technical effects:
the positioning frames are arranged, so that a plurality of shield segments can be cast and molded simultaneously by the same positioning frame, and the gaps between adjacent shield segments are not more than 2mm, so that the fitting degree between adjacent shield segments in the later construction process is improved;
the arc bottom plate rotates the setting to set up lifter plate and elevating system, be convenient for carry out the drawing of patterns to the shield constructs the section of jurisdiction, improved preparation efficiency.
Drawings
FIG. 1 is a schematic front view of the present invention during the concrete placement process;
FIG. 2 is a schematic side view of the present invention during the concrete placement process;
FIG. 3 is a schematic vertical sectional view of the arcuate bottom, side and top plate portions of FIG. 2;
FIG. 4 is an enlarged partial schematic view of portion A of FIG. 3;
fig. 5 is a schematic front view of the structure of the present invention during demolding.
In the figure, 1, a positioning frame; 11. a support plate; 12. a column; 121. a horizontal axis; 122. a motor; 13. an arc-shaped bottom plate; 131. a side plate; 2. a lifting plate; 21. a hoisting ring; 3. a lifting mechanism; 31. a fixed pulley; 32. a winch; 4. a reinforcement cage; 5. a positioning assembly; 51. a groove; 52. rotating the plate; 53. fixing the rod; 531. a force application block; 54. a reinforcing steel bar clamp; 541. a U-shaped fastener; 542. a connecting rod; 6. a top plate; 61. a lateral limiting plate; 62. a top limiting plate; 63. a socket; 7. and (3) a steel plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the shield segment manufacturing process disclosed by the invention comprises the following steps:
s1, binding the reinforcement cage 4 (see figure 3);
reinforcing steel bars are arranged according to the design of the shield segment to form a reinforcing cage 4 (see figure 3);
s2, placing the reinforcement cage 4 (shown in figure 3) in place;
referring to fig. 1 and 2, the spacer 1 is selected according to the shape of the cover. The positioning frame 1 comprises a supporting plate 11, two upright posts 12 vertically fixed on the upper surface of the supporting plate 11 and an arc-shaped bottom plate 13 arranged between the two upright posts 12. A lifting plate 2 is further arranged above the supporting plate 11, and a lifting mechanism 3 for driving the lifting plate 2 to move up and down is connected to the lifting plate 2. The lifter plate 2 is parallel to the support plate 11 and two uprights 12 pass through the lifter plate 2 so that the lifter plate 2 can be slip-fitted along the uprights 12.
The lifting mechanisms 3 are arranged in two, and the two lifting mechanisms 3 are arranged on two sides of the supporting plate 11 and correspond to the upright posts 12. The lifting mechanism 3 comprises a fixed pulley 31 rotatably connected to the side of the upright 12 facing away from each other and a hoist 32 located on both sides of the support plate 11. The rope of the hoist 32 is passed around the fixed sheave 31 and bound to the hoist ring 21 at the end of the lifting plate 2. The up and down movement of the lifting plate 2 is realized by starting the hoist 32.
A horizontal transverse shaft 121 is rotatably connected between the two upright posts 12, and a motor 122 for driving the transverse shaft 121 to rotate is fixed at one end of the transverse shaft 121. The arc-shaped bottom plate 13 is arranged in a semicircular shape, and the central line part of the convex side of the arc-shaped bottom plate 13 is fixed on the transverse shaft 121, so that the arc-shaped bottom plate 13 and the transverse shaft 121 rotate synchronously. The two ends of the arc bottom plate 13 along the axial direction are fixed with side plates 131 along the vertical direction, and the radian of the side plates 131 is the same as that of the arc bottom plate 13.
Referring to fig. 2 and 3, the motor 122 is rotated such that the opening of the arc-shaped bottom plate 13 is directed upward. Choose a plurality of steel reinforcement cage 4 to place on arc bottom plate 13, the quantity of steel reinforcement cage 4 is according to the shield that the cover body can be divided in the semicircle within range constructs the quantity of section of jurisdiction for the standard, and this embodiment divides three shield to construct the section of jurisdiction and carries out the design of arc bottom plate 13 at the semicircle within range with the cover body. Three reinforcement cages 4 are placed on the arc-shaped bottom plate 13, and concrete cushion blocks are placed below the reinforcement cages 4 located in the middle.
Referring to fig. 3 and 4, a positioning assembly 5 is arranged between the two reinforcement cages 4 at the two ends and the arc-shaped bottom plate 13. The positioning assemblies 5 are disposed at least four corresponding to one reinforcement cage 4 on the arc-shaped bottom plate 13, and the embodiment takes four positioning assemblies 5 as an example for illustration.
The positioning assembly 5 comprises a groove 51 arranged on one side of the arc-shaped bottom plate 13 far away from the upright post 12, a circular rotating plate 52 completely inserted into the groove 51, a fixing rod 53 fixed on one side of the rotating plate 52 far away from the circle center of the arc-shaped bottom plate 13, and a reinforcing steel bar fixture 54 connected to one side of the rotating plate 52 facing the circle center of the arc-shaped bottom plate 13. The fixing rod 53 is perpendicular to the rotating plate 52, the fixing rod 53 penetrates through the arc-shaped bottom plate 13, and the force application block 531 is fixed at one end, located outside the arc-shaped bottom plate 13, of the fixing plate, so that force can be conveniently applied to the force application block 531 to rotate the rotating plate 52. The reinforcing bar fixture 54 may be a commercially available type, or may be formed by combining a U-shaped clamp 541 and a connecting rod 542. The reinforcing bar of steel reinforcement cage 4 can the joint in U-shaped fastener 541, and connecting rod 542 is fixed in the tip of U-shaped fastener 541, and the one end that connecting rod 542 kept away from U-shaped fastener 541 can with commentaries on classics board 52 screw-thread fit.
During installation, a release agent is sprayed on the upper surface of the arc-shaped bottom plate 13, the side close to the side plate 131 (see fig. 2) and the rotating plate 52. Get reinforcing bar fixture 54 joint on the reinforcing bar of steel reinforcement cage 4, then place steel reinforcement cage 4 on arc bottom plate 13 for the connecting piece corresponds with commentaries on classics board 52. Then, the urging block 531 is rotated to rotate the rotating plate 52, thereby screwing the connecting rod 542 and the rotating plate 52. When the connecting rod 542 and the rotating plate 52 are fixed, the thread on the connecting rod 542 is completely inserted into the rotating plate 52.
S3, pouring concrete;
referring to fig. 2 and 3, the top plate 6 is selected, the top plate 6 is arranged in a semicircular shape, and the circle where the outer contour of the top plate 6 is far away from the outer contour of the arc-shaped bottom plate 13 is concentric. Lateral limiting plates 61 are fixed to the top plate 6 along the two axial ends, and top limiting plates 62 are fixed to the two sides of the opening position of the top plate 6. And spraying a release agent on the convex side of the top plate 6, and covering the top plate 6 above the arc-shaped top plate 6. The two side plates 131 are positioned between the two lateral limiting plates 61, and the two top limiting plates 62 rest on the tops of the two side plates 131. The lateral restriction plate 61 and the side plate 131 are fixed by bolts without penetrating the side plate 131.
The socket 63 is arranged at the position corresponding to each two adjacent reinforcement cages 4 on the top plate 6, the socket 63 is arranged in parallel with the cross shaft 121, and the arrangement length of the socket 63 is the same as the vertical distance of one side of each side plate 131. The opening width of the inserting opening 63 is 0.2mm-0.5 mm.
The concrete is poured through one end of the channel formed by the arc-shaped bottom plate 13, the two side plates 131 and the top plate 6, and when the concrete is level with the other end of the channel, the pouring is stopped. Two steel plates 7 are taken, sprayed with a release agent and respectively inserted into the two spigots 63.
S4, shaping and demolding;
with reference to fig. 2 and 5, after the concrete is demolded, the steel plate 7 is pulled out. The motor 122 is started to rotate the arc-shaped bottom plate 13 until the opening of the arc-shaped bottom plate 13 faces downwards, and the motor 122 is switched off. The roof 6 is removed and the hoist 32 is started to move the lifting plate 2 upwards until it abuts against the bottom of the side plate 131. Rotating the forcing block 531 disengages the connecting rods 542 from the rotating plate 52 (see fig. 4) while allowing the shield segments to slowly move away from the arcuate base plate 13. And (3) jetting air to the joint of the arc-shaped bottom plate 13 and the shield segment and the joint of the side plate 131 and the shield segment by using a high-pressure air gun to accelerate the separation of the shield segment.
The winch 32 is started to enable the lifting plate 2 to move downwards, and the shield segment completes demoulding under the action of high-pressure air and self weight and moves downwards synchronously along with the lifting plate 2. When the lifting plate 2 moves to the lowest position, a gap exists between the top of the shield segment and the two ends of the arc-shaped bottom plate 13. And then, taking the shield segment out of the lifting plate 2. In the on-site demoulding process, a rubber block (not shown in the figure) with a semicircular section can be placed above the lifting plate 2, so that the shield segment is matched with the rubber sheet, and the shield segment is convenient to support.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A shield segment manufacturing process is characterized in that: the method comprises the following steps:
s1, binding a reinforcement cage (4);
reinforcing steel bars are bound according to the design of the shield segment to form a reinforcing cage (4);
s2, positioning the reinforcement cage (4);
selecting a positioning frame (1), wherein the positioning frame (1) comprises a supporting plate (11), upright columns (12) vertically fixed on the supporting plate (11) and an arc-shaped bottom plate (13) arranged between the two upright columns (12); one side of the arc-shaped bottom plate (13) is connected to the top of the upright post (12), and vertical side plates (131) are fixed at two ends of the arc-shaped bottom plate (13) along the axial direction; placing a plurality of reinforcement cages (4) in a space formed by the arc-shaped top plate (6) and the two side plates (131), and positioning and locking the positions of the reinforcement cages (4);
s3, pouring concrete;
selecting a top plate (6) according to the positioning frame (1), wherein the top plate (6) is arranged in an arc shape and can completely cover the top of a space formed by an arc-shaped bottom plate (13) and two side plates (131); placing the top plate (6) above the side plate (131) and locking the position; the positions, corresponding to every two adjacent reinforcement cages (4), of the top plate (6) are provided with inserting openings (63), and the inserting openings (63) are parallel to the transverse shaft (121); the opening length of the insertion opening (63) is the same as the vertical distance of one side close to the two side plates (131), and the opening width of the insertion opening (63) is not more than 2 mm;
pouring concrete through one end of a channel formed by the arc-shaped bottom plate (13), the two side plates (131) and the top plate (6), and stopping pouring when the concrete is level with the other end of the channel; the steel plates (7) are respectively inserted into the corresponding sockets (63);
s4, shaping and demolding;
after the concrete is initially set, pulling out the steel plate (7); and (4) removing the top plate (6), and taking out the shield segment from the arc-shaped bottom plate (13) and the side plate (131).
2. The shield segment manufacturing process according to claim 1, characterized in that: in the positioning of the reinforcement cage (4) of S2, two upright posts (12) are arranged, a horizontal transverse shaft (121) is rotatably connected between the two upright posts (12), and one end of the transverse shaft (121) is connected with a motor (122); the arc-shaped bottom plate (13) is fixedly connected to the transverse shaft (121); in the shaping and demolding of S4, after the top plate (6) is removed, the starting motor (122) drives the arc-shaped bottom plate (13) to rotate, so that the shield segment is separated from the space between the two side plates (131).
3. The shield segment manufacturing process according to claim 2, characterized in that: in the positioning of the reinforcement cage (4) of S2, a lifting plate (2) is arranged above the supporting plate (11), the lifting plate (2) is parallel to the supporting plate (11), and the two upright posts (12) penetrate through the lifting plate (2); the lifting plate (2) is connected with a lifting mechanism (3) for driving the lifting plate (2) to move up and down.
4. The shield segment manufacturing process according to claim 3, characterized in that: two lifting mechanisms (3) are arranged, and the two lifting mechanisms (3) are arranged on two sides of the supporting plate (11) and correspond to the upright columns (12); the lifting mechanism (3) comprises a fixed pulley (31) which is rotatably connected to one side of the upright post (12) which deviates from each other and winches (32) which are positioned on two sides of the supporting plate (11), and a rope on the winches (32) bypasses the fixed pulley (31) and is fixed at the end part of the lifting plate (2).
5. The shield segment manufacturing process according to claim 1, characterized in that: in the positioning of the reinforcement cage (4) of S2, three reinforcement cages (4) are placed on the arc-shaped bottom plate (13), and a concrete cushion block is arranged below the reinforcement cage (4) in the middle; a positioning component (5) is arranged between the two reinforcement cages (4) at the two ends and the arc-shaped bottom plate (13).
6. The shield segment manufacturing process according to claim 5, characterized in that: the positioning assembly (5) comprises a groove (51) arranged on the concave side of the arc-shaped bottom plate (13), a circular rotating plate (52) inserted into the groove (51), a fixing rod (53) fixed on one side of the rotating plate (52) far away from the circle center of the arc-shaped bottom plate (13) and a steel bar fixture (54) connected to one side of the rotating plate (52) facing the circle center of the arc-shaped bottom plate (13); the fixing rod (53) is arranged perpendicular to the rotating plate (52), and the fixing rod (53) penetrates through the arc-shaped bottom plate (13); one end of the reinforcing steel bar clamp (54) is in threaded fit with the rotating plate (52); during installation, the reinforcing steel bar fixture (54) is clamped on the reinforcing steel bar of the reinforcing steel bar cage (4), and then the reinforcing steel bar cage (4) is placed on the arc-shaped bottom plate (13) so that the connecting piece corresponds to the rotating plate (52); the fixing lever 53 is rotated to rotate the rotating plate 52, thereby screw-fixing the connecting rod 542 and the rotating plate 52.
7. The shield segment manufacturing process according to claim 6, characterized in that: after the connecting rod (542) and the rotating plate (52) are fixed, the thread on the connecting rod (542) completely enters the rotating plate (52).
8. The shield segment manufacturing process according to claim 1, characterized in that: in the pouring concrete of S3, lateral limiting plates (61) are fixed on two ends of the top plate (6) along the axial direction, and top limiting plates (62) are fixed on two sides of the top plate (6) at the opening position; after the top plate (6) is covered above the arc-shaped top plate (6), the two side plates (131) are positioned between the two lateral limiting plates (61), and the two top limiting plates (62) are placed at the tops of the two side plates (131).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232944.7A CN111409191A (en) | 2020-03-28 | 2020-03-28 | Shield segment manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232944.7A CN111409191A (en) | 2020-03-28 | 2020-03-28 | Shield segment manufacturing process |
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| CN111409191A true CN111409191A (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113103409A (en) * | 2021-04-13 | 2021-07-13 | 袁国强 | Prefabricated coincide floor of assembled modularization pouring forming die |
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Application publication date: 20200714 |