JP2000160840A - Lift up staging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staging for lifting up a material body such as a roof structure or the like in a silo or the like capable of releasing stresses brought in a support frame structure such as the peripheral wall of a concrete silo or the like and eliminating large-scaled anchors by using a load transmission structure of only a compression force and shaping a form excellent in a self-sup porting stability to facilitate the execution. SOLUTION: Frames 2, 2 in an elevation view are installed so as to set astride on the upper part of a support frame structure A. The long vertical members 2a, 2a of the frames 2, 2 are arranged at a lifting-up material body B side and a liftup jack 8 is provided through a jack receive girder 3. Further, a vertical support point 5 in between a horizontal member 2b and the upper face of the support frame structure A, and side face support points 6, 7 are provided between the long and short vertical members 2a, 2c and both side faces of the support frame structure A respectively. The side face support point 6 of the lifting-up material body B side is formed lower than the side face support point 7, and the overturning moment by the material body B is replaced to horizontal couple of forces (compression force).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift for constructing a building in the field of construction and civil engineering, in which a part of the building is constructed at a level lower than a predetermined level, and then lifted to a predetermined level and integrated. The present invention relates to a lift-up gantry as a support gantry for lifting up a part of a building in an up-construction method. In particular, the present invention relates to a lift-up base that is most suitable for lifting a roof frame or the like using a concrete wall.

[0002]

2. Description of the Related Art The basic structure of a structural system of a lift-up construction method is as follows. A lifting wire is installed above a support frame (a side wall of a building, etc.) so as to protrude toward a lifting body (a roof frame, etc.). Alternatively, the rod is lowered, and this is connected to a lifting body constructed on the ground or the like, and the lifting body is lifted by a lift-up jack. For this reason, the vertical load of the lifting body and the overturning moment for falling down to the lifting body act on the lift-up gantry and the support frame.

A conventional lift-up frame is integrated (joined) with a support frame at the top, and a mechanism for transmitting the overturning moment to the support frame as a couple of a downward force (compression force) and an upward force (tensile force). Most take

[0004]

In the conventional lift-up gantry described above, the following problems may occur when a reinforced concrete wall is installed as a support frame.

(1) When the overturning moment is large compared to the bending performance of the supporting frame, a large temporary reinforcement is required to improve the bending performance. (2) When the overturning moment is large or when the width of the concrete wall of the support frame is small, a large anchor is required for the concrete wall to transmit a large tensile force.

(3) When the width of the top of the concrete wall of the supporting frame is small, the self-standing stability of the lift-up stand is poor, and the difficulty of construction is high. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to reduce a stress generated in a supporting frame, and to provide a large-scale load transmission mechanism using only a compressive force. It is an object of the present invention to provide a ten-handed lift-up base that does not require a simple anchor, is more self-supporting, and is easier to construct.

[0007]

According to the present invention, a ten-frame frame that can be installed on a lift-up frame over the upper part of a support frame is used, and the number of support points of the ten-frame frame is three.
It has the following configuration. The vertical load of the lifting body is supported at one of the vertical support points on the top of the support frame.
No horizontal reaction force is expected at this vertical support point. The overturning moment is supported by two points, the side support points on the inner side and the outer side of the support frame. One side support point is provided on each of the inner side surface and the outer side surface of the support frame, and the level of the side support point on the lifting side is lowered.

That is, the ten-handed lift-up pedestal of the present invention is installed on a support frame (such as a silo peripheral wall) of a building, and is used for lifting up a lifting body (such as a silo roof frame). It is a gantry, and a ten-shaped frame is installed so as to straddle the upper part of the support frame in a side view, and a long vertical member of the ten-shaped frame is arranged on the lifting side and a lift is placed on this long vertical member side. An upjack is provided, a vertical support point is provided between the horizontal member located in the middle part of the cross frame and the upper surface of the support frame, and a long and short vertical member and a support frame sandwiching the upper portion of the support frame of the cross frame. Characterized in that side support points are respectively provided between both side surfaces of the base plate (see claim 1: FIG. 1). A side support point is provided at the bottom of the long vertical member located on the lifting side,
By providing the side support points at the intermediate portion of the short vertical member located on the side of the lifting body, the level of the side support points on the side of the lifting body becomes lower than the level of the side support points on the side of the lifting body.

A ten-handed lift-up frame may be constructed by directly installing a lift-up jack on the upper front surface of the ten-shaped frame. It is preferable that the heads of the hand-shaped frames are connected to each other with a jack girder, and furthermore, a pair of ten-handed frames are connected to each other with a stiffener to form a ten-handed lift-up stand. A plurality of such ten-handed lift-up racks are arranged at intervals in the circumferential direction of the support frame, and the lifting rods of the lift-up jacks installed on the center upper surface of the jack girder of each of the ten-handed lift-up racks are used for lifting. It is connected directly to the outer periphery or via a girder, and lifts up the lifting body by supporting it at multiple points.

In the above construction, the vertical load of the lifting body is supported at the vertical support point on the top of the support frame, and the overturning moment due to the lift is the level difference between the inner and outer side support points of the support frame. Is replaced by a couple in the horizontal direction, and by making the level on the lifting body side lower than the level on the anti-lifting body side, both become compressive forces. This gives 3
All of the support points can be of the type of transmission by compressive force, so that the stress generated in the support frame can be reduced. Further, by increasing the level difference between the side support points on the inner side surface and the outer side surface of the support frame, the couple (compression force) can be reduced, and the stress generated in the support frame can be further reduced. Become.

Further, since the load can be transmitted only by the compressive force, a large anchor is not required for the supporting frame as in the prior art, and a simple supporting point made of a steel plate, mortar or the like can be provided.

In terms of construction, a stable state can be achieved simply by placing the ten-handed frame at a predetermined position on the support frame, so that safety is high, installation is easy, and workability is good. Incidentally, the present invention, the construction of the roof frame of storage facilities such as silos and tanks,
The present invention can be applied to the construction of a roof frame of a large space building such as a sports facility or a meeting facility, and the construction of an intermediate stage of a boarding structure such as a chimney. Further, the present invention is particularly effective when lifting up a lift such as a roof using a concrete wall.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 shows a basic configuration example of a ten-handed lift-up base of the present invention. Figure 2
FIG. 7 is an example in which the ten-handed lift-up gantry of the present invention is applied to a reinforced concrete coal storage silo.
Is a side view, front view, and FIG.
(a), (b) is a rear view and a plan view of a ten-handed lift-up stand. FIG. 5 is a plan view showing an example of an arrangement state of the ten-handed lift-up gantry. 6 and 7 are cross-sectional views of a silo showing a lift-up state of the lifting body.

1 to 4, a ten-shaped lift-up gantry 1 of the present invention is provided with a pair of ten-shaped frames 2, 2 which are disposed in a pair at predetermined intervals on the left and right sides, and Jack receiving beam 3 connecting the heads of frames 2 and 2,
A stiffener 4 for integrating the ten-handed frames 2, 2;
A vertical support point 5 installed between the horizontal member 2b of the cross-shaped frame 2 and the upper surface of the supporting frame (silo peripheral wall) A; a long vertical member 2a and a short vertical member 2 of the cross-shaped frame 2
It is composed of side support points 6, 7 and the like installed between c and the inner and outer peripheral surfaces of the support frame A, respectively.

The ten-hand frame 2 is made of H-shaped steel or the like, and has a long vertical member 2a, a horizontal member 2b horizontally and integrally protruding from an intermediate portion of the vertical member 2a, and a horizontal member 2b. It is composed of a short vertical member 2c which is integrally hung downward from the lower end of the tip, and the jack receiving beam 3 is stretched between the upper portions of the longer vertical members 2a, 2a. A lift-up jack 8 is installed on the center upper surface of the jack receiving beam 3, and a suspension rod (or suspension wire) 9 of the jack 8 is suspended from the center between the pair of left and right vertical members 2a, 2a.

The hanging rod 9 is a member that penetrates the jack 8 and moves up and down by a gripping device by a gripping device of the jack 8, and a lower end thereof is connected to a lifting body (a silo roof frame) B (FIG. 1) or a lifting body. B is connected to the receiving girder 10 supporting B (FIG. 3). A plurality of lift-up stands 1 are provided at intervals in the circumferential direction of the support frame A, and the lifting body B is lifted by a plurality of lift-up jacks 8.

Lifting body B inside support frame A like a silo
Is lifted up so that the long vertical member 2a of the ten-shaped frame 2 is positioned inside the support frame A and the short vertical member 2c is positioned outside the support frame A. Is installed so as to straddle the upper part of the support frame A. The outer side support point 7 is a short vertical member having the same length as the thick portion at the upper part of the support frame A so that the inner side support point 6 is located at the lower end of the long vertical member 2a. 2c, the support frame A
The level difference between the side support points 6 and 7 on both side surfaces of is increased.

As shown in FIG. 2, the vertical support point 5 is a vertical support member made of a steel plate (or mortar, rubber or the like) 11, and is provided by stacking a plurality of steel plates 11 on the upper surface of the support frame A. The level can be adjusted. The side support points 6 and 7 are horizontal support members including a steel plate (or mortar, rubber or the like) 12 attached to the side surface of the support frame A and a plurality of bolts 13 attached to the vertical members 2a and 2c. After the bill frame 2 is inserted into the upper part of the support frame A, the bolts 13 are tightened to bring the bolt ends into contact with the steel plate 12, thereby bringing the side support points 6, 7 into close contact.

In order to prevent the ten-handed lift-up frame 1 from moving in the horizontal direction, a horizontal positioning device 14 is installed on the upper surface of the support frame A (see FIGS. 3 and 4 (b)). The positioning device 14 includes, for example, a bracket fixed to the upper surface of the support frame A by bolts, and a plurality of steel plates inserted into the side surfaces of the bracket and the vertical member 2a.

Using the ten-handed lift-up gantry 1 configured as described above, lift-up is performed in the following procedure. This is the case where the present invention is applied to the silos shown in FIGS.

(1) As shown in FIG. 6, when the silo peripheral wall A made of reinforced concrete is constructed, the ten-handed lift-up base 1 integrated with the ground is lifted by a crane so as to straddle the upper part of the silo peripheral wall A. Are installed at intervals in the circumferential direction.

(2) In the lower portion inside the silo peripheral wall A, a roof frame B and a stacker C of the silo are assembled on a temporary support column, and a receiving girder connected to a lower end of a suspension rod 9 of each lift-up jack 8. 10 supports the outer peripheral portion of the roof frame B. As shown in FIG. 5, the receiving girder 10 is provided with the suspension rods 9 of the adjacent lift-up racks 1 and 1.
Are arranged to be connected.

(3) Each of the lift-up jacks 8 is operated synchronously by one jack operation panel, and the roof frame B and the stacker C are lifted up to the top as shown in FIG.

(4) The outermost peripheral portion of the roof frame B to be lifted up is removed so that the inside of the silo peripheral wall A can be lifted. The installation of the roof is completed by connecting the parts. Thereafter, the lift-up gantry 1 is removed from above the silo peripheral wall A by a crane.

As described above, when the roof steel frame of a reinforced concrete shell structure such as a large silo is constructed by the lift-up method, the overturning moment caused by the lift-up is the structure of the top of the concrete wall required for the permanent structure. It is possible to exceed the performance. In the case of the conventional lift-up gantry, it is considered that a large amount of reinforcement is required because the overturning moment acts directly on the concrete wall, but in the present invention, the level difference between the side support points 6 and 7 of the ten-handed frame 2 is considered. The overturning moment can be replaced with a couple in the horizontal direction, and by lowering the side support points 6 on the lifting side, both the side support points 6 and 7 can be used as compressive forces. Since the level difference of 7 is large, the compressive force can be suppressed small, and the stress acting on the concrete wall can be greatly reduced.

In the above, an example in which the present invention is applied to a silo has been described.
The present invention can be applied to the construction of a roof frame of a large space building such as a sports facility or a meeting facility, or the construction of an intermediate stage of a tower-like structure such as a chimney.

[0027]

Since the present invention has the above-described configuration, the following effects can be obtained.

(1) The overturning moment due to the lifting body is replaced with a couple in the horizontal direction by the level difference between the side support points on the inner side and the outer side of the supporting frame, and the level on the lifting side is lower than the level on the counter-lifting side. By doing so, both can be made into a compressive force, so that the stress generated in the supporting frame can be reduced, and the conventional temporary reinforcement for improving the bending performance becomes unnecessary, and the cost can be reduced.

(2) The load can be transmitted only by the compressive force, so that a large-scale anchor for the conventional supporting frame is not required, a simple supporting point made of a steel plate or the like can be used, and the cost can be reduced. .

(3) It has a shape that is easy to install and has a high level of self-supporting stability, facilitates construction, and has high safety.

[Brief description of the drawings]

FIG. 1A is a side view and FIG. 1B is a front view showing a basic configuration of a ten-handed lift-up base of the present invention.

FIG. 2 is a side view showing an example in which the ten-handed lift-up base of the present invention is applied to a silo.

FIG. 3 is a front view of the ten-handed lift-up gantry of FIG. 2;

4 (a) is a rear view and FIG. 4 (b) is a plan view of the ten-handed lift-up gantry of FIG. 2;

FIG. 5 is a plan view of a silo showing an arrangement state of the ten-handed lift-up gantry of FIG. 2;

FIG. 6 is a cross-sectional view of the silo showing a state before lift-up in the silo.

FIG. 7 is a cross-sectional view of the silo showing a state after lift-up in the silo.

[Explanation of symbols]

 A: Support frame (silo peripheral wall) B: Lifting body (roof frame) 1: Ten-shaped lift-up frame 2 ... Ten-shaped frame 2a: Vertical member 2b: Horizontal member 2c: Vertical member 3: Jack girder 4 Stiffener 5 Vertical support point 6 Side support point (inner side) 7 Side support point (outer side) 8 Lift-up jack 9 Hanging rod (wire) 10 Lifting Body girder 11 Steel plate (mortar, rubber) 12 Steel plate (mortar, rubber) 13 Bolt 14 Positioning device

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takehiko Nabeshima 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. F-term (reference) 2E174 AA01 BA05 CA03 CA42 DA02 DA18

Claims (1)

[Claims] 1. A lift-up gantry installed on a support frame of a building and used for lifting up a lifting body, wherein a ten-handed frame is installed so as to straddle an upper portion of the support frame in a side view. At the same time, a long vertical member of the ten-shaped frame is arranged on the lifting side, a lift-up jack is provided on the long vertical member side, and a horizontal member located in the middle part of the ten-shaped frame and the upper surface of the support frame are provided. A vertical support point is provided between the long and short vertical members sandwiching the upper part of the support frame of the ten-frame frame, and side support points are respectively provided between both side surfaces of the support frame. Up mount.