JP3795465B2 - Form for manufacturing steel concrete composite segment and manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manufacturing form and a manufacturing method for manufacturing a steel-concrete composite segment used for an inner wall of a tunnel or the like by a vertical punching method.
[0002]
[Prior art]
The steel-concrete composite segment used for the inner wall of shield tunnels, etc., has two methods: flat punching and vertical punching. In the vertical punching method, segment steel with a back wall and four-side walls is opened at the front. The shell is placed vertically, the front opening of the steel shell is sealed with a front mold, and fluidized concrete is pumped from an inlet provided in the front mold to fill the steel shell with concrete.
[0003]
Conventionally, a mold having a structure as shown in FIG. 11 has been used as a vertical form manufacturing mold for such a steel-concrete composite segment (see, for example, Patent Document 1 and Patent Document 2). The structure and manufacturing method of this conventional formwork are shown below.
[0004]
(1) As shown in FIG. 11 (a), the segment-shaped steel shell 1 (also serving as an outer mold) curved in an arc shape is lifted and moved by a crane, a forklift, etc., and placed on the frame 100 to prevent falling. The steel shell 1 is fixed with the jig 101. The fall prevention jig 101 is driven into a holding metal fitting 101a with a chin provided on a frame surrounding the column 100a of the gantry 100 and a jaw portion to be locked to the upper flange of the steel shell 1, and a cotter hole of the metal fitting and the column. It consists of a cotter 101b and the like for fixing the presser fitting 101a to the support column 100a. In addition, as shown in FIG.11 (b), the steel shell 1 has A type frame, B type frame, K type frame, C type frame etc. according to the shape of the segment piece which comprises one segment ring. .
[0005]
(2) The front formwork 102 (inner formwork) shown in the front and rear views of FIG. 11 (c) is housed in a formwork storage part sandwiched between the support column 100a and the formwork stand 100b for cleaning and application of a release material. After carrying out such work, it is lifted and moved by a crane, a forklift or the like, and set in the front opening of the steel shell 1 while adjusting manually.
[0006]
(3) The steel shell 1 and the front mold 102 are fixed by fixing means. As shown in FIGS. 11 (c) and 11 (d), the fixing means includes a fixing jig 103 provided on the four sides of the front mold 102, a pulling metal fitting 104 having a jaw and a cotter hole, and a cotter 105. Become. As shown in FIG. 11 (d), the cotter 105 is hammered into the cotter hole of the pulling metal fitting 104 inserted in the fixing jig 103 with a hammer to lock the steel shell 1 on the rear side or front side flange. The jaw portion of the drawn metal fitting 104 is drawn, and the front mold 102 is tightly coupled to the steel shell 1.
[0007]
(4) A concrete injection device (not shown) is attached to the concrete injection port 106 provided in the front mold 102, and the fluidized concrete is pumped into the internal space formed by the steel shell 1 and the front mold 102. The concrete pouring device is removed, and a cylinder (not shown) is inserted into the pouring port 106 and set. In addition, an internal air vent pipe and an external air vent pipe are attached to the upper part of the front mold 102, and air in the mold is discharged to the outside when the concrete is placed.
[0008]
(5) Steam curing concrete.
[0009]
(6) Remove the cotter 105 of the pulling metal fitting 104. The removed metal fitting is stored in the pocket 107 of the front mold 102. The front mold 102 is lifted by a crane or the like and stored in the mold storage section of the mold stand 100b. The manufactured steel-concrete composite segment is lifted with a crane and moved to a temporary product storage site. Thereafter, the above process is repeated.
[0010]
[Patent Document 1]
JP 2001-47420 A [Patent Document 2]
Japanese Patent Laid-Open No. 10-34616
[Problems to be solved by the invention]
However, in the conventional method as described above, it takes time to align the front formwork, and the fixation between the front formwork and the steel shell as the main body is unstable and easily dislodged. There was a problem. Further, the problem will be described in detail below.
[0012]
(1) As shown in FIG. 11 (a), the fall-preventing jig 101 is slidably mounted vertically along the column 100a, and the position of the fall-preventing jig 101 is high and heavy, making it difficult to set. .
[0013]
(2) For the horizontal alignment of the front formwork 102, the side fixing jig 103 shown in the rear view of FIG. 11 (c) is used as a reference piece. It takes. Also, it takes time to align the vertical direction. Furthermore, since it is a crane operation, it takes time to lift, move and suspend. The efficiency of crane work also deteriorates.
[0014]
(3) The iron surface of the steel shell 1 and the iron surface of the jaw of the pulling metal fitting 104 are slippery and easily detached. Therefore, a gap is generated between the front end face of the steel shell and the front mold surface, and the cement paste leaks.
[0015]
{Circle around (4)} The front mold 102 is demolded because the concrete and the mold adhere to each other. Therefore, when the mold is lifted and removed by a crane or the like, the front mold 102 is shaken, which is dangerous.
[0016]
The present invention was made to solve the above-described conventional problems, and in the production of a steel-concrete composite segment using a steel shell as an outer mold and a front mold as an inner mold, the front mold Assembling and demolding of the frame can be easily performed without using a crane, etc., the positioning of the front mold is easy, the steel shell and the front mold can be securely and securely bonded, and the concrete It is an object of the present invention to provide a manufacturing form and manufacturing method for a steel-concrete composite segment that can eliminate leakage.
[0017]
[Means for Solving the Problems]
Claim 1 of the present invention is a formwork for manufacturing a steel-concrete composite segment formed by filling concrete in a steel shell having a back wall and a four-side wall and having an open front, and the steel shell is mounted vertically. The base that is placed, the support frame that is erected on the base and supports the back wall of the steel shell, and the steel shell that is provided on the upper part of the support frame and fixes the upper part of the steel shell A sliding front mold that has a prevention member, a face plate that closes the front opening of the steel shell, and that can be moved back and forth with respect to the support frame; and four peripheral portions of the support frame And a plurality of said plurality of slide-type front molds, each of which is provided with a fastening member that is detachably fastened to said support frame. It is.
[0018]
The present invention is applied to the production of a steel-concrete composite segment such as an NM segment curved in an arc shape, such as a tunnel segment, and a front mold as an inner mold for a steel shell as an outer mold. It is a slide type, in which the steel shell is fixed with a one-touch type fall prevention member, and the steel shell and the front mold can be tightly integrated with a one-touch type opening / closing type fastening member.
[0019]
According to a second aspect of the present invention, in the manufacturing mold according to the first aspect, the base extends in parallel with the advancing / retreating direction of the sliding front mold, and is spaced in a direction perpendicular to the advancing / retreating direction. A guide rail disposed on the guide rail and a mounting table on which the steel shell is placed. It is the formwork for manufacture of the steel concrete synthetic segment characterized by being provided in. For example, as shown in FIG. 3 (b), the slide type front mold is configured by projecting a support leg from a traveling device and attaching a face plate to the support leg.
[0020]
According to a third aspect of the present invention, in the manufacturing form according to the first or second aspect, the support frame body is a plurality of reaction force column members (square pipes) that are vertically erected at intervals in the horizontal direction. Etc.) and a horizontal member that connects these reaction force pillars, and the sliding front formwork is made up of a plurality of reaction force pillars (such as square pipes) that are erected vertically at intervals in the horizontal direction. It is a formwork for manufacturing a steel-concrete composite segment, which is configured by attaching a face plate, and in which reaction force column members facing each other of a support frame body and a slide type front mold frame are fastened by a fastening member. That is, it is preferable that the support frame body and the slide type front form frame are constituted by a plurality of reaction force column members and horizontal members, and the like so that the inner and outer form frames can be firmly bonded with a simple structure.
[0021]
According to a fourth aspect of the present invention, in the manufacturing form according to the first, second, or third aspect, the fastening member includes a fastening bolt having a bolt head attached to the support frame body, and a screw at the tip of the fastening bolt. It is a form for manufacturing a steel-concrete composite segment, comprising: a nut to be attached; and a locking member that is provided on a sliding front mold and holds the nut. For example, as shown in FIG. 3 (a), etc., fastening bolts are attached to the reaction force column material so that the upper and left sides of the support frame can be rotated in the vertical direction or the side direction, and the lower side of the support frame is fastened. Bolts are passed through the reaction member with a gap so that they can be rotated laterally or downward.
[0022]
According to a fifth aspect of the present invention, in the manufacturing form according to the first, second, third, or fourth aspect, the steel shell collapse prevention member is attached to the upper part of the support frame body so as to be rotatable in the vertical direction by a horizontal axis A steel-concrete composite segment comprising: a hook member whose tip is locked to a flange of a side wall of the steel shell; and a disengagement preventing member that prevents the hook member in a locked state from being detached from the flange. Formwork. That is, for example, as shown in FIG. 4, the steel shell collapse prevention member is a hinge rotation type attached to the upper part of the support frame, and is held in a locked state by a pin.
[0023]
According to a sixth aspect of the present invention, in the manufacturing mold according to the first, second, third, fourth, or fifth aspect, the sliding front mold can be adjusted in a vertical direction and a horizontal direction with respect to the base. It is the formwork for manufacture of the steel concrete synthetic segment characterized by being provided. For example, as shown in FIGS. 5 and 6, fine adjustment bolts are provided on the support legs protruding from the traveling device so that the face plate can be finely adjusted in the vertical direction and the horizontal direction.
[0024]
Claim 7 of the present invention is a method for producing a steel-concrete composite segment formed by filling concrete into a steel shell having a back wall and a four-side wall and having an open front, and the production die according to claim 1 Using the frame, place the steel shell on the base and support it with the support frame and fix it with the fall prevention member, slide the sliding front mold against this steel shell and open the front of the steel shell The part is closed with a face plate, the support frame and the sliding front mold are fastened with a steel shell sandwiched between fastening members, concrete is filled into the internal sealed space formed by the steel shell and the face plate, and after curing of the concrete, A method for producing a steel-concrete composite segment, wherein the fastening by the fastening member is released and the sliding front mold is slid away from the steel shell. When removing the slide type front formwork, for example, a pressing bolt as shown in FIG. 10 is used to remove the face plate from the concrete.
[0025]
In the configuration as described above, since the front mold as the inner mold is a slide type with respect to the steel shell as the outer mold, a crane or the like is not required for assembly and demolding of the front mold. Moreover, since it slides along a guide rail, the steel shell and the front mold can be easily aligned, and fine adjustment to a predetermined position can be easily performed.
[0026]
The steel shell can be easily fixed by making the steel shell fall-preventing member a hinge rotation type with respect to the conventional cotter-type fall-preventing jig. In addition, by using an open / close method consisting of fastening bolts, nuts, and locking members, the fastening work can be done with a single touch from the retracted state that does not interfere with assembly and demolding work, compared to the conventional cotter-type drawing metal. While being able to be performed, the steel shell and the face plate can be securely bonded tightly, and concrete leakage can be eliminated. Furthermore, since it is a slide system, a detaching device such as a pressing bolt can be used for demolding, and a crane or the like becomes unnecessary.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. This embodiment is an example of a form for manufacturing an NM (New Mecanically-jointed) segment (special meshed steel or the like is used for an inter-segment joint and an inter-ring joint of steel shells). 1, 2, and 3 are a plan view, a front view, and a side view of the manufacturing formwork.
[0028]
1 to 3, the manufacturing formwork of the present invention mainly includes a base 2 on which a steel shell 1 for a segment that also serves as an outer formwork is placed vertically, and an upright stand on the base 2. A support frame 3 that supports the back wall 10 of the steel shell 1, a steel shell collapse prevention member 4 that is provided on the support frame 3 and fixes the upper portion of the steel shell 1, and the steel shell 1. A slide type front formwork (inner formwork) 5 that has a face plate 50 that closes the front opening 13 and that can be moved forward and backward with respect to the support frame 3, and four rounds of the support frame 3 A plurality of members are provided at intervals, and are configured by fastening members 6 that detachably fasten the four sides of the sliding front mold 5 to the support frame 3.
[0029]
The steel shell 1 includes a back wall 10 curved in an arc shape, upper and lower side walls 11, 11 and left and right side walls 12, 12 as shown by broken lines in FIGS. have. Further, a reinforcing bar (not shown) is provided inside the steel shell 1, and an NM segment as a steel-concrete composite segment is manufactured by filling concrete therein. This embodiment shows a case of an A form for producing a standard type A segment.
[0030]
The base 2 uses the guide rail 20 of the slide type front mold 5 and is configured by mounting a mounting table 21 made of a plate or the like on the upper surface at an intermediate position of the guide rail 20. The guide rails 20 are arranged in parallel with the arc center axis CL of the steel shell 1 shown in FIG. 1, and are arranged in a pair on the left and right in the direction orthogonal to the arc center axis CL. On the mounting table 21, the lower side wall 11 of the steel shell 1 is mounted (see FIG. 3).
[0031]
As shown in FIGS. 1 and 3 (a), the support frame 3 is composed of a reaction force column member 30 made of a square pipe or the like and a horizontal member 31 made of an angle member or the like. The reaction force column 30 is erected vertically with an appropriate interval in the horizontal direction, and is connected and fixed by two upper and lower arc-shaped horizontal members 31, 31, thereby the rear wall 10 of the steel shell 1. Are arranged corresponding to the arcs. The horizontal member 31 on the lower surface on which the lower part of the reaction force column member 30 is placed is fixed to the upper surface of the guide rail 20.
[0032]
The fall prevention member 4 of the steel shell 1 is provided in the upper part in the center part of such a support frame 3. As shown in FIG. 4, the fall prevention member 4 includes a hook member 40 and a fall prevention member 41. The upper portions of the reaction force column members 30, 30 adjacent to each other at the center are connected to each other by a connecting material 42, and a pair of support plates 43, 43 are attached on the connecting material 42, and horizontally below the support plates 43, 43. The lower part of the hook member 40 is attached via the shaft 44, the hook member 40 is freely rotatable between the pair of support plates 43, 43, and the hook at the tip is hooked on the flange of the upper side wall 11 of the steel shell 1, Be locked to the flange. The disengagement prevention member 41 is a pin with a handle, is inserted through the upper part of the pair of support plates 43, 43, prevents the hook member 40 in the locked state from rotating in the direction away from the steel shell 1, and the flange To prevent it from coming off. It should be noted that a locking groove 45 into which the detachment prevention pin 41 can be inserted is preferably provided on the back portion of the hook member 40.
[0033]
As shown in FIGS. 1 to 3, the slide type front mold 5 is positioned at an equal distance from each reaction force column 30 of the support frame 3 and is made of a square pipe or the like arranged in an arc shape. A face plate 50 is attached to the steel shell 1 side of the power column member 51. The face plate 50 is formed to be curved in an arc shape with the curvature of the inner surface of the segment, and the surface on the side opposite to the steel shell is reinforced by vertical and horizontal reinforcing plates 52 and 53. As shown in FIG. 1, a vertical reinforcing plate 52 is fixed to the reaction force column member 51.
[0034]
Such a sliding front mold 5 is provided with traveling wheels 54 that roll with a guide rail 20 made of H-section steel as a guide, and moves toward or retracts from the steel shell 1. As shown in FIG. 3 (a), the traveling wheels 54 are rotatably attached to both ends of the traveling plate 55, and are disposed in a pair in the traveling direction. As shown in FIG. 3 (b), a plate-like support leg 56 protruding upward is attached to the traveling plate 55, and the upper portion of the support leg 56 is overlaid on an attachment plate 57 fixed to the face plate 50. The fastening bolt 58 is fixed. As shown in FIG. 3 (c), if the traveling wheel 54 is a flanged wheel, and the guide rail 20 is provided with a flanged wheel ridge 20a, the sliding type front formwork 5 is less likely to shake in the lateral direction. can do. Further, a device for finely adjusting the position of the face plate 50 in the vertical direction and the horizontal direction with respect to such a traveling portion is provided.
[0035]
FIG. 5 is an example of a fine adjustment device for the vertical direction of the face plate 50, and the attachment plate 57 of the face plate 50 can be moved up and down by a fine adjustment bolt 70. That is, the nut 72 is fixed to the lower surface of the mounting member 71 fixed to the support leg 56, and the fine adjustment bolt 70 is screwed onto the nut 72 from below. A pressing plate 57a with which the tip of the fine adjustment bolt 70 abuts is provided horizontally at the lower portion of the mounting plate 57, and the bolt hole of the fastening bolt 58 is an oval long in the vertical direction. By loosening the fastening bolt 58 and inserting / removing the fine adjustment bolt 70 in the vertical direction, the mounting plate 57 moves up and down, and the position of the face plate 50 is adjusted in the vertical direction. After the position adjustment, if the fastening bolt 58 is tightened, the face plate 50 is fixed to the support leg 56.
[0036]
FIG. 6 is an example of a horizontal fine adjustment device for the face plate 50, and the support leg 56 can be moved in the horizontal direction by a fine adjustment bolt 75. That is, a fine adjustment bolt 75 is screwed to a pair of nuts 76 fixed to the lower portion of the support leg 56, and a bolt head of the fine adjustment bolt 75 is brought into contact with a reaction force plate 77 erected on the upper surface of the guide rail 20. It is supposed to be a structure to let you. By inserting and removing the fine adjustment bolts 75 of the pair of left and right guide rails 20 in the horizontal direction, the sliding front mold 5 itself moves in the horizontal direction by the reaction force of the reaction force plate 77.
[0037]
The fastening member 6 is a member that firmly fixes the support frame 3 and the slide type front mold 5 with the steel shell 1 sandwiched with one touch. As shown in FIGS. The upper parts and the lower parts of the force column material 30 and the reaction force column material 51 are connected to each other. On the left side and the right side, the side surfaces of the reaction force column material 30 and the reaction force column material 51 are connected to each other at two locations. The fastening member 6 includes a fastening bolt 60 in which a bolt head is attached to the reaction force column member 30 of the support frame 3, a nut 61 screwed to the tip of the fastening bolt 60, and the slide type front mold 1. The reaction force column member 51 includes a locking member 62 that locks the nut 61.
[0038]
As shown in FIG. 7, the fastening bolts 60 on the upper side and the left and right sides have a bolt head 60a orthogonal to the bolt shaft, and the reaction force column 30 is attached to the reaction force column 30 via an attachment shaft 63 that passes through the bolt head 60a. As shown in FIG. 3 (a), the upper and lower sides are attached to a pair of attachment plates 64 and 64, and the left and right sides are opened and closed and rotated horizontally as shown in FIG. . The locking member 62 is formed with a locking groove 62a into which the distal end shaft portion of the fastening bolt 60 is inserted from above or from the lateral direction so that the nut 61 can be locked. The material 30 and the reaction force column material 51 can be fastened.
[0039]
As shown in FIG. 8, the lower side fastening bolt 60 uses a bolt having a normal bolt head, and is attached by passing through a horizontal through hole provided in a lower portion of the reaction force column member 30 of the support frame 3. The through hole is formed to be larger than the bolt shaft diameter so that it can be opened and closed in the lateral direction and downward. The locking groove 62a of the locking member 62 is formed in the lateral direction. In addition, a box wrench-shaped detent member 65 is attached to the bolt head of the tightening bolt 60 so that the tightening bolt 60 does not rotate when the nut 61 is tightened, and the reaction force column member 30 is rotated by the detent member 65. A detent pin 66 for blocking is projected.
[0040]
FIG. 9 is an example of preventing the face plate 50 from slipping, and the packing material 80 is continuously arranged in the vertical direction on the steel shell side surfaces at both ends of the face plate 50. A step 81 is formed on the surface of the side wall 12 of the steel shell 1 on which the face plate 50 abuts. A packing material 80 is accommodated in the step 81, and an internal space formed by the steel shell 1 and the face plate 50 is formed. Prevent the filled concrete from leaking out.
[0041]
FIG. 10 is an example of a device for removing the face plate 50, and the face plate 50 is detached from the steel shell 1 by pressing bolts 90 provided on the reaction force column members 51 on both sides of the face plate 50. If the pressing bolt 90 is horizontally screwed onto the nut 91 fixed to the outer side surface at the intermediate position in the vertical direction of the reaction column 51, and the pressing bolt 90 is screwed in, the tip of the pressing bolt 90 is the side wall 12 of the steel shell 1. The face plate 50 is separated from the steel shell 1 by the reaction force.
[0042]
The NM segment is manufactured by the procedure shown below using the mold having the above configuration (see FIGS. 1 to 3).
[0043]
(1) A support frame 3 is erected integrally on the base 2, and the sliding front mold 5 is moved away from the support frame 3 to move away from the steel shell 1 for the segment. Is lifted by a crane or the like, moved, placed on the base 2, supported by the support frame 3, and the steel shell 1 is fixed by the fall prevention member 4 of FIG.
[0044]
(2) The slidable front mold 5 is moved manually with the pair of left and right guide rails 20 and 20 as a guide with respect to the steel shell 1 fixed to the support frame 3.
[0045]
(3) Finely adjust the vertical and horizontal positions of the sliding front mold 5, that is, the face plate 50 with the fine adjustment bolt 70 of FIG. 5 and the fine adjustment bolt 75 of FIG. 6.
[0046]
(4) Fastening members 6 are attached to the four sides of the support frame 3 in an open state, the fastening bolts 60 are rotated in the closing direction, and the nut 61 at the tip is engaged with the locking member 62 to By tightening 61, the support frame 3 and the sliding front mold 5 are fastened with the steel shell 1 interposed therebetween.
[0047]
(5) A concrete injection device is attached to the concrete injection port 95 of the slide type front mold 5 shown in FIG. 2, and fluidized concrete is pumped into an internal sealed space formed by the steel shell 1 and the face plate 50.
[0048]
(6) Steam curing concrete.
[0049]
(7) After curing, before removing the slide-type front mold 5, use the pressing bolt 90 of FIG. 10 to cut off the adhesion between the face plate 50 and the concrete.
[0050]
(8) Loosen the nut 61 of the fastening member 6 and rotate the fastening bolt 60 in the opening direction to return the fastening member 6 to the standby position.
[0051]
(9) The sliding front formwork 5 is retreated in a direction away from the steel shell 1.
[0052]
(10) Lift the manufactured NM segment with a crane or the like and move it to the temporary product storage site. Thereafter, the above process is repeated.
[0053]
In addition, although illustrated about NM segment, it cannot be overemphasized that this invention can be applied not only to this but another steel concrete synthetic segment.
[0054]
【The invention's effect】
(1) Since the front formwork as the inner form is a sliding method with respect to the steel shell as the outer formwork, a crane or the like is not required for assembling and demolding the front formwork, and along the guide rail This makes it easy to align the steel shell and the front formwork, and also allows easy fine adjustment to the specified position, enabling quick work of the formwork and greatly improving work efficiency. To improve.
[0055]
(2) Compared to the conventional cotter-type fall prevention jig, the steel shell fall prevention member is a hinge rotation type, so that the steel shell can be easily fixed, saving labor and improving work efficiency. I can plan.
[0056]
(3) One-touch fastening operation from the retracted state that does not interfere with assembly and demolding work by using an opening and closing method consisting of fastening bolts, nuts and locking members for the conventional cotter-type pulling bracket. Therefore, labor saving and improvement of work efficiency can be achieved, and the steel shell and the face plate can be securely and securely bonded, and concrete leakage can be eliminated.
[0057]
(4) Since it is a slide system, a detaching device such as a pressure bolt can be used for demolding, a crane or the like is unnecessary, and demolding work can be performed safely and quickly.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a form for manufacturing a steel-concrete composite segment of the present invention.
2 is a front view of the manufacturing form shown in FIG. 1. FIG.
3 is a vertical sectional view of the manufacturing form shown in FIG. 1, in which (a) shows a central portion and (b) shows a running portion.
4A and 4B are side views and (b) are rear views showing a member for preventing the steel shell from collapsing in the manufacturing form shown in FIG.
FIG. 5 is an example of a fine adjustment device for the vertical direction of the face plate of the manufacturing form shown in FIG. 1, wherein (a) is a front view and (b) is a side view.
FIG. 6 is a front view showing an example of a horizontal fine adjustment device for the face plate of the manufacturing form shown in FIG. 1;
7 is a perspective view showing fastening members on the upper side and the left and right sides of the manufacturing form shown in FIG. 1. FIG.
8 is a perspective view showing a fastening member on the lower side of the manufacturing form shown in FIG. 1. FIG. 8 (a) is a view seen from the front, and FIG. 8 (b) is a view seen from the back.
9A and 9B are examples of preventing the face plate of the manufacturing form shown in FIG. 1, and FIG. 9A is a horizontal sectional view, FIG. 9B is a front view, and FIG. 9C is a perspective view.
10 is a horizontal sectional view showing an example of a device for detaching the face plate of the manufacturing form shown in FIG. 1; FIG.
FIG. 11 is a conventional manufacturing formwork, in which (a) is a perspective view of a gantry and a steel shell, (b) is a perspective view showing various shapes of the formwork, and (c) is a front view of the entire formwork. The perspective view which shows a back surface, (d) is a perspective view which shows the fixing means of a steel shell and a front formwork.
[Explanation of symbols]
1 …… Steel shell (outer mold)
DESCRIPTION OF SYMBOLS 10 ... Back wall 11 ... Upper and lower side wall 12 ... Left and right side wall 13 ... Opening part 2 ... Base 20 ... Guide rail 21 ... Mounting stand 3 ... Supporting frame 30 ... Reaction force column material 31 …… Horizontal member 4 …… Falling prevention member 40 …… Hook member 41 …… Drilling prevention member 42 …… Connecting member 43 …… Support plate 44 …… Horizontal shaft 45 …… Locking groove 5 …… Sliding front Formwork (inner formwork)
50 ... Face plate 51 ... Reaction column 52 ... Reinforcement plate 53 ... Reinforcement plate 54 ... Traveling wheel 55 ... Traveling plate 56 ... Support leg 57 ... Mounting plate 58 ... Fastening bolt 6 ... Fastening Member 60 ... Fastening bolt 61 ... Nut 62 ... Locking member 63 ... Mounting shaft 64 ... Mounting plate 65 ... Non-rotating member 66 ... Non-rotating pin 70 ... Fine adjustment bolt 71 ... Mounting member 72 …… Nut 75 …… Fine adjustment bolt 76 …… Nut 77 …… Reaction force plate 80 …… Packing material 81 …… Step 90 …… Pressing bolt 91 …… Nut 95 …… Concrete injection port

Claims (7)

It is a formwork for manufacturing a steel-concrete composite segment formed by filling concrete inside a steel shell having a back wall and a four-side wall and having an open front.
A base on which the steel shell is placed vertically, a support frame standing on the base and supporting the back wall of the steel shell, and an upper part of the steel shell provided on the support frame A steel shell collapse preventing member for fixing the steel shell, a face plate that closes the front opening of the steel shell, and a slide-type front mold that is installed on the base so as to be movable back and forth with respect to the support frame, A steel concrete comprising a plurality of fastening members that are provided at intervals around the four circumferences of the support frame and that detachably fasten the four sides of the slide type front mold to the support frame, respectively. Formwork for manufacturing synthetic segments. 2. The manufacturing form according to claim 1, wherein the base extends in parallel with the advancing / retreating direction of the sliding front formwork, and is arranged at intervals in a direction perpendicular to the advancing / retreating direction. And a mounting table provided on the guide rail, on which a steel shell is mounted, and a traveling wheel that rolls using the guide rail as a guide is provided at a lower portion of the slide type front formwork. Forms for manufacturing steel-concrete composite segments. 3. The manufacturing form according to claim 1, wherein the support frame includes a plurality of reaction force column members vertically arranged at intervals in the horizontal direction, and a lateral surface connecting these reaction force column members. The sliding front mold is composed of a frame, and is constructed by attaching a face plate to a plurality of reaction force pillars that are set up vertically at intervals in the horizontal direction. The support frame and the sliding front mold are opposed to each other. A formwork for manufacturing a steel-concrete composite segment, wherein reaction column members are fastened together by a fastening member. The manufacturing form according to claim 1, 2, or 3, wherein the fastening member includes a fastening bolt having a bolt head attached to the support frame, a nut screwed to the tip of the fastening bolt, and a sliding type. A formwork for manufacturing a steel-concrete composite segment, comprising a locking member provided on a front mold and for locking the nut. 5. The manufacturing form according to claim 1, wherein the steel shell collapse preventing member is attached to an upper portion of the support frame so as to be rotatable in a vertical direction by a horizontal axis, and a tip of the steel shell is a side wall of the steel shell. A formwork for manufacturing a steel-concrete composite segment, comprising: a hook member that is locked to the flange; and a detachment preventing member that prevents the hook member in the locked state from being detached from the flange. 6. The manufacturing form according to claim 1, wherein the slide type front form is provided so that its position can be adjusted in a vertical direction and a horizontal direction with respect to the base. Formwork for manufacturing steel concrete composite segments. It is a method for producing a steel-concrete composite segment formed by filling concrete into a steel shell having a back wall and a four-side wall and having an open front.
A manufacturing form according to claim 1, wherein a steel shell is placed on a base and supported by a support frame and fixed by a fall-preventing member. The front opening of the steel shell is closed with a face plate, the support frame and the slide-type front mold frame are fastened with the steel shell sandwiched between the fastening members, and the concrete is sealed in the internal sealed space formed by the steel shell and the face plate. After the concrete is cured, the fixing by the fastening member is released, and the sliding front formwork is slid in the direction away from the steel shell.

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