JPH0842139A - Sleeper receiving structure in timbering - Google Patents

Abstract

PURPOSE:To provide a sleeper receiving structure in timbering which becomes optimal to support a sleeper being a form side member from below in a stable condition and in which a workability undeteriorating sleeper receiving member is arranged when the sleeper and a form or the like supported with this are removed on the upper end side of the timbering. CONSTITUTION:A sleeper receiving member 6 to support a sleeper has a base stand 10 connected to a height adjusting member, a raising-lowering body 20 which is interposed on the outer peripheral side of the base stand so as to be raised and lowered and supports the sleeper and a wedge 30 connected to the base stand and the raising-lowering body, and the raising-lowering body is constituted on the outer peripheral side of a guide part 12 to constitute the base stand, and a body part 21 is interposed so as to be raised and lowered. A through-hole to insert the wedge is bored, and a pair of main holes 21a and 21b to insert the wedge are bored in a central part in the lateral direction of the body part, and a pair of sub-holes 21c are bored on the upper ends of the main holes, and the wedge has a tip side neck part formed so as to become narrower than the sub-holes and a base end side neck part 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a large undertaking structure in a supporting work for supporting a formwork when constructing a concrete structure.

[0002]

2. Description of the Related Art In recent years, in the support work for supporting a formwork when constructing a concrete structure, the upper end of a support pile such as a pipe support and the formwork are supported from below from the bottom of a joist. Between Daihiki and the so-called jack operation to expand and contract,
For example, a height adjusting member including a screw jack is distributed.

The height adjusting member makes it possible to dispose a formwork, which is supported largely by expansion and contraction thereof, at a set height position before pouring concrete, and after pouring concrete. By the contraction, it is possible to form a work space for pulling a large amount of joists and joists from the lower surface side of the formwork and peeling the formwork from the lower surface of the concrete structure.

However, in view of the actual use of the support work, usually, an extremely large load is applied to the height adjusting member after the concrete is placed, so that the height adjusting member is not connected to the screw jack. In such a case, it is not easy to contract it by jacking, and in extreme cases, the contraction may not be realized.

Therefore, for example, between the height adjusting member connected to the upper end of the support pile and the Daihiki which supports the formwork from below with the joist interposed, for example, Japanese Utility Model Laid-Open No. 1-153056. Therefore, it is possible to propose a large undertaking structure in a supporting work in which a large undertaking member is distributed as disclosed in Japanese Utility Model Laid-Open No. 5-69239.

Incidentally, the large catch member is constructed so that it can be contracted by a so-called pull-out operation of the wedge by hammering or the like.

Therefore, according to the large undertaking structure in the supporting work in which the large undertaking members according to the above-mentioned proposals are distributed,
Even if it is difficult to contract the height adjustment member due to a large load from the concrete structure above, the subsequent large adjustment member can be contracted, and the subsequent height adjustment member can be easily contracted. Therefore, it is possible to easily carry out the above-mentioned pulling-out and joisting and peeling-off of the mold.

[0008]

However, the following disadvantages have been pointed out in the large undertaking structure in the support work in which the large overtaking members according to the above-mentioned proposals are provided.

That is, in the large catch member disclosed in Japanese Utility Model Laid-Open No. 1-153056, the contraction length when contracted is at most the height of the wedge.

By the way, generally, at the time of removing a haul or a mold from the upper end side of the support work, at least a space where the haul or the like can be freely inserted and removed, that is, at least the above wedges. Space more than body height is required.

Therefore, in the large catch receiving member according to the above-mentioned proposal, if only the contraction corresponding to the height of the wedge is realized, the space required for removing and inserting the large draw cannot be secured. The removal work will not be possible without any hindrance.

In addition to the above, in the above proposal, the required space cannot be secured unless the large catch member is contracted and then the height adjusting member is contracted by the jack operation, which is so-called troublesome. There are also drawbacks.

On the other hand, in the large catch member disclosed in Japanese Utility Model Laid-Open No. 5-69239, the contraction with a larger stroke is possible as compared with the above-mentioned conventional example, but the supporting position of the upper member by the wedge is It is located at a so-called eccentric position, not at the center position in the horizontal direction of the large catch member.

Therefore, the wedge supports the load from above at a position laterally displaced from the axial center position of the large catch member, which is the longitudinal direction, and the large catch member itself is, of course, so-called loose. In the extreme case, there is a fear that the large undertaking member may be pushed out in the lateral direction and the collapse of the large undertaking structure in the supporting work may be caused.

In order to avoid this danger in advance, there is a problem that it is necessary to take further measures such as taking a so-called copy.

The present invention was devised in view of the above-mentioned circumstances, and its object is to optimally support a large pull which is a mold side member from below in a stable state, and After that, when removing the above-mentioned large pull or the formwork etc. which it supports on the upper end side of the support work, etc., the large support member in the support work where the optimum large support member is arranged so as not to deteriorate the workability Is to provide the structure.

[0017]

In order to achieve the above-mentioned object, the structure of the present invention is constructed such that the lower end is connected to a height adjusting member disposed at the upper end of a support pile or the like while the lower end of the formwork is tied to the lower face of the formwork. A large base member that supports a large bar, which is provided adjacent to the base, and the large base member is connected to the height adjusting member; A guide part constituting a base in a large catching structure in a supporting work, which comprises an elevating body mounted to support a large pull, and a wedge connected to the base and the elevating body so as to be retractable from the lateral direction. On the outer peripheral side of the body, a cylindrical body that constitutes an elevating body is interposed so that it can move up and down, while a through hole for inserting wedges is opened in the lateral center of the guide. Insert the wedge in the center of the body in the horizontal direction so that it is aimed at the through hole. A pair of main holes are formed, and a pair of sub-holes communicating with the upper ends of the main holes and having a narrower width than the main holes and extending upward by an appropriate length are formed. The wedge has a tip side neck and a base side neck which are formed so that the wedge is narrower than the sub-hole, and when the wedge retreats, the tip side neck and the base side neck have the above-mentioned sub-sides. It is assumed that the elevating body is formed so as to be present in the hole and be lowered with respect to the base.

Preferably, the guide portion is formed in a cylindrical shape similar to the main body portion, and the auxiliary hole is set so that its vertical length is equal to or higher than the body height of the wedge. , The girder receiving portion constituting the elevating body is formed in a gutter shape having a square U-shaped cross section that allows accommodating of the grab, and the wedge extends along a direction transverse to the extending direction of the grab. It is assumed that it can appear and disappear.

[0019]

Therefore, the grab pull receiving member holds the grab pull at its upper end in a state where its lower end is connected to the height adjusting member disposed at the upper end of the support pile or the like.

At this time, the base part of the base forming the large catch member is connected to the height adjusting member, and the main body of the lifting body forming the large catch member can be moved up and down on the outer peripheral side of the guide part of the base. It is interposed, and the grab receiving part of the elevating body holds the grab in the accommodated state.

The wedge is connected to the guide portion and the main body portion of the outer peripheral side of the wedge portion so as to penetrate therethrough, maintains the large catch member in the extended state during the forward movement thereof, and during the backward movement thereof. The large underwriting member is contracted.

The wedge is inserted into a through hole which is opened at the center of the guide portion in the lateral direction, and is inserted into a main hole which is opened in the main body so as to be aimed at the through hole. When
The extended state of the large catch member is maintained.

Further, when the apical side neck and the proximal side neck formed on the wedge are made to exist in the auxiliary hole continuously formed in the main hole, the large catch member is contracted.

The stroke of contraction of the large catch member is determined by how the vertical length of the sub-hole is set, and preferably the length is set to be equal to or greater than the so-called body height of the wedge.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the illustrated embodiments. As shown in FIG. 1, the large undercarriage structure in the supporting work according to one embodiment of the present invention is arranged at the upper end of the supporting pile 1. Height adjustment member 2 consisting of existing screw jack
And a large pulling member 6 that supports the joists 4 adjacent to the lower surface of the formwork 3 from below, and a large pulling receiving member 6 disposed between them.

As shown in FIGS. 2 to 4, the large catch member 6 includes a base 10, a lifting body 20, and a wedge 3.
0, and when the elevating body 20 is raised with respect to the base 10, the wedge 30 linked to the both 10 and 20 is in the forward state shown in the figure. Is maintained in a stretched state (see FIG. 2).

Further, as shown in FIG. 5, the large catch member 6 is placed in the retracted state in which the wedge 30 is illustrated, and the base 1 is
When the elevating body 20 is lowered with respect to 0, the contracted state is established.

The base 10 has a base 11 formed in a flat plate shape.
And a guide portion 12 which is formed in a round tubular shape and stands upright on the central upper surface of the base portion 11, and the lower end side of the elevating body 20 is interposed on the outer peripheral side of the guide portion 12 so as to be capable of moving up and down. The wedge 30 is supposed to be inserted into the guide portion 12.

The base 11 is connected to the height adjusting member 2 and is formed to have a square shape in a plan view in the illustrated example, but instead of this, it is circular in a plan view. It may be formed so as to have a polygonal shape or other polygons, and the point is that it is sufficient if it is formed in a shape that can be stably connected to the upper end of the height adjusting member 2.

As shown in the figure, the base portion 11 has holes at its four corners through which connecting tools (not shown) such as bolts are inserted when the base 10 is connected to the height adjusting member 2. It is preferable that 11a is opened.

The guide portion 12 has a wedge 30 on its upper end side.
When the wedge 30 is connected to the base 10, the operability when hitting the wedge 30, for example, with a hammer, is improved, and the lifting body 20 is inserted.
It is designed to secure the stroke when the is descending.

The guide portion 12 is configured such that the wedge 30 is inserted through the through holes 12a and 12b formed on the upper end side thereof, and the through holes 12a and 12b are the guide portions 12 in the illustrated example. 2 are formed in a cylindrical shape, they are formed in a pair in the protruding and retracting direction of the wedge 30 which is the left-right direction in FIG. 2, but when the guide portion 12 is formed of a so-called solid body. Of course, a single through hole is set.

However, when the guide portion 12 is formed in a tubular shape as in the illustrated example, the total weight of the base 10 can be reduced, and the through holes 12a and 12b are opened. Is advantageous in that it becomes easier.

The through-holes 12a and 12b are formed in the lateral center portion of the guide portion 12 (see FIG. 3), whereby the wedge 30 is centrally viewed in plan view of the base 10. It is possible to set the situation in which the shaft core part that becomes

Further, the through holes 12a and 12b are set so that their upper end positions are at the same level but their lower end positions are displaced from each other, that is, they coincide with the inclination of the lower end of the wedge 30.

The through holes 12a and 12b are formed by wedges 30.
Needless to say, it has a width dimension sufficient to allow the insertion.

The elevating body 20 has a body portion 21 formed in a round tube shape, and a large receiving portion 22 formed in a U-shaped cross section and connected to the upper end of the body portion 21. , Body 21
Is made to exist on the outer peripheral side of the guide part 12 in the base 10, and the large pulling part 22 holds the large pulling part 5.

The main body portion 21 has main holes 21a and 21b, which are aimed at the through holes 12a and 12b opened in the guide portion 12 of the base 10 on the lower end side thereof, and the main holes 21a and 21b on the upper half side thereof. A pair of sub-holes 21c communicating with the main holes 21a and 21b
To have.

By disposing the main holes 21a and 21b on the lower end side of the main body portion 21, the main body portion 21, that is, the lift 2
It is possible to secure the stroke at the time of 0 descent.

Since each of the main holes 21a and 21b is formed in such a manner that the through holes 12a and 12b form a pair in the protruding / retracting direction of the wedge 30, the pair of main holes 21a, 21b also forms a pair in the protruding / retracting direction of the wedge 30. (See FIG. 2).

Of course, the size of each of the main holes 21a and 21b is set so as to allow the wedge 30 to be inserted, but in the illustrated example, the upper end positions thereof are at the same level. On the other hand, the lower end positions are displaced from each other, that is, the lower end positions of the wedges 30 are set to correspond to each other.

The so-called vertical size of each of the main holes 21a and 21b need not be set differently as in the embodiment, but may be different in size as in the embodiment, that is, By setting so as to correspond to the through holes 12a and 12b, so-called insertion error does not occur when the wedges 30 are connected, which is advantageous in improving operability.

The pair of sub-holes 21c are the main holes 21a, 21
It is connected to the upper end of b and is formed in a narrower width than the main holes 21a and 21b, and extends upward, that is, on the upper half side of the main body portion 21 with an appropriate length.

Incidentally, the length of the sub-hole 21c, that is, the height dimension, is preferably set to be equal to or higher than the body height of the wedge 30. The reason will be described later.

It suffices that the large catching portion 22 is formed so as to hold the large catch 5, but when the large catching portion 22 is formed in a gutter shape having a square U-shaped cross section as shown in the drawing. , Fig. 2
Large pull 5 along the protruding / retracting direction of wedge 30 which is the left / right direction
It is advantageous in that it does not cause a shift or a fall.

The rising portion 22 in the large underwriting portion 22
In the case where the rising height dimension of a (see FIG. 2) is reduced and the large catching portion 22 is formed in a gutter shape having a shallow corner U-shape, the large catching portion 22, that is, the lifting body 20 is This is advantageous in that it is also possible to move the large puller 5 in the direction in which the wedges 30 appear and disappear and remove it from the large catch receiving portion 22 when descending.

The wedge 30 is formed so as to be inserted into and retractable from the guide portion 12 of the base 10 and the main body portion 21 of the elevating body 20 in the lateral direction. It is assumed that this is connected so as to be able to appear and disappear along a direction that intersects the extending direction of the large pull 5.

By setting the wedge 30 so as to be projected and retracted in a direction transverse to the extending direction of the hauling 5, the wedge 30 is set.
Is advantageous, for example, in that the operability when hitting with a hammer is not disturbed by the distribution of the large puller 5.

The wedge 30 has a tip 31 and
A proximal end portion 32, a distal end neck portion 33 formed adjacent to the distal end portion 31, a proximal end neck portion 34 formed adjacent to the proximal end portion 32, a distal end neck portion 33 and a proximal end side. Neck 3
4 and an intermediate portion 35 positioned between the two.

Pointed portion 31, base portion 32 and intermediate portion 35
Is formed so as to have a width dimension that allows free insertion into the through holes 12a and 12b and the main holes 21a and 21b, and the apical side neck portion 33 and the proximal side neck portion 34 have the auxiliary hole 21a.
It is formed to have a width dimension that is narrower than c.

Then, the base end portion 32 and the intermediate portion 35 are arranged such that when the wedge 30 is advanced (the state shown in FIG. 2), the through holes 1 are formed.
2a, 12b and the main holes 21a, 21b are present, and at this time, the main body 21, that is, the guide portion 12 of the elevating body 20, that is, the extended state in which the lowering of the base 10 is blocked. Will be punished.

The apical side neck 33 and the proximal side neck 34
However, when the wedge 30 is retracted (state shown in FIG. 5), it will be present in each of the sub-holes 21c, and at this time, the main body portion 21, that is, the elevating body 20 is guided by the guide portion 12, that is, the base. It is in a contracted state that allows it to descend with respect to 10.

The apical side neck 33 and the proximal side neck 3 are provided.
The width dimension in plan view of 4 is the pointed portion 31, the base end portion 32.
And, of course, it is set so as to be smaller than the width dimension in the intermediate portion 35 (see FIG. 4).
Even when the large catch member 6 contracts, the position where the load acts becomes the so-called center, and even when the large contract member 6 contracts, the large catch member 6 does not suffer from so-called graffiti.

The large catch member 6 according to this embodiment, which is formed as described above, is in a so-called assembled state, and in the support work 1
By being connected to the height adjusting member 2 arranged at the upper end of the, the large undertaking structure in the supporting work according to the present invention is configured.

At this time, the base 11 of the base 10 is connected to the upper end of the height adjusting member 2, and in the connection, appropriate connecting tools such as bolts and nuts are usually used. Thus, the lateral displacement of the base 10 with respect to the height adjusting member 2 is prevented.

Next, the large pull 5 is placed on the upper end of the lifting / lowering body 20, that is, on the large pull receiving part 22, because the large pull receiving part 22 is formed in a gutter shape having a U-shaped cross section. Therefore, it is not necessary to secure the connection state between the large pulling receiving portion 22 and the large pulling portion 5 by using the connecting means.

From the above state, the main body portion 21 of the lifting body 20 is raised along the guide portion 12 of the base 10, and when the main body portion 21 is raised to a predetermined height, that is, the main body portion 21 When the through holes 12a, 12b in the guide portion 12 are in the state of being aimed at the holes 21a, 21b, the wedge 30 is advanced to maintain the lifted state of the elevating body 20.

When the large catch member 6 is prevented from contracting due to the connection of the wedges 30, the lower height adjusting member 2 or the supporting pile 1 if necessary is extended so that the elevating body 20 can be extended. A large pull 5 placed on the upper end is adjacently provided on the lower surface side of the form 3 with an interposition of the joists 4, so that the large pull receiving member 6 can support the form 3 in a predetermined manner.

At this time, in the large catch member 6 according to this embodiment, since the wedge 30 is connected to the so-called central portion thereof, the support position of the wedge 30 is eccentric from the central position. It does not become like
Therefore, a stable support state is realized.

After the concrete cast on the formwork 3 is solidified, when the formwork 3 is peeled off from the concrete structure C (see FIG. 1), the tip 31 of the wedge 30 is hammered. By hitting or the like, the wedge 30 is retracted to a so-called released state so that the state shown in FIG. 2 is moved to the right in the figure.

When the width of the pointed portion 31 of the wedge 30 is set to be larger than the width of the main hole 21b to be opened in the lifting body 20, the wedge 3 is hit by the hammer or the like.
Even when hitting 0, it is advantageous in that the so-called slip-out of the wedge 30 in the protruding state from the elevating body 20 is effectively prevented.

When the wedge 30 is retracted as described above, each side neck 3
3,34 will be present at the lower end of the sub-hole 21c,
Therefore, the elevating body 20 is allowed to descend, and the large catch member 6 is contracted as shown in FIG.

At this time, above the large catch member 6,
A space for a stroke equal to the vertical length in the auxiliary hole 21c in which the wedge 30 is present is formed by the lowering of the elevating / lowering body 20, and extraction of the large pull 5 from the upper end of the large pull receiving member 6 or a concrete structure. Each work such as peeling of the mold 3 from C can be performed without any trouble.

The height of the space formed above can be freely set by setting the height of the sub-hole 21c in the lifting body 20, and the height of the sub-hole 21c is set to a so-called large height. In this case, the work of contracting the height adjusting member 2 and the support piles 1 below and the like is not required, and each work such as the withdrawal of the large pull 5 and the peeling of the form 3 can be performed.

In the embodiment described above, both the guide portion 12 of the base body 10 and the main body portion 21 of the elevating body 20 are formed in a cylindrical shape, but instead of this, each is formed in a rectangular tube shape. However, in that case, it is advantageous in that the through holes 12a and 12b, the main holes 21a and 21b, and the sub-hole 21c are opened, and the positioning and the opening work are facilitated. There are advantages.

[0066]

As described above, according to the present invention, in a supporting work in which a large haul adjacent to a formwork or the like is supported from below by a supporting pile, it is arranged at the upper end of the supporting pile or the like. Since a large catching member that is formed in a wedge structure and enables contraction with a large stroke is arranged between the height adjusting member of the jack structure and the large pulling, it is necessary to configure the support work. Not only is it most suitable for use, but it also facilitates the work when removing large pulls, forms, etc. on the upper end side of the support work due to shrinkage, and does not reduce workability. There are some advantages.

Further, according to the present invention, since the guide portion is formed in a cylindrical shape similar to the main body portion, the total weight of the base having the guide portion can be reduced, and the guide can be reduced. This is advantageous in that it is easy to open the through hole in the portion.

Further, according to the present invention, since the auxiliary hole is set so that its vertical length is equal to or greater than the body height of the wedge, the lower height adjusting member and the supporting piles are contracted. There is an advantage that each work such as pulling out the large pull and peeling off the form on the upper end side of the supporting work can be easily performed without requiring work.

Further, according to the present invention, the large overhanging portion constituting the lifting body is formed in the shape of a gutter having a square U-shaped cross section that allows the large uplift to be accommodated. Even if the connecting state is not secured by using the connecting means with Daihiki, even if there is an external force acting along the direction in which the wedges appear and disappear,
It has the advantage of not causing a big slip or a fall.

Furthermore, according to the present invention, the wedges are capable of appearing and retracting along a direction transverse to the extension direction of the hajiki, so that the operability when hitting the wedges with a hammer is great. There is an advantage of being undisturbed by the distribution of toki.

Furthermore, according to the present invention, the distribution position of the wedge does not change in the vertical direction during forward movement and backward movement, and therefore the wedge is advanced by hammering. In this case, there is also an advantage that the so-called operability is excellent because the operation of supporting the wedge with fingers is unnecessary.

[Brief description of drawings]

FIG. 1 is a partial front view showing, in a partial cross-section, a utilization state of a large catching structure in a supporting work according to an embodiment of the present invention.

FIG. 2 is a front view showing the large catch member in a partial cross section.

FIG. 3 is a side view showing a large catch member.

FIG. 4 is a cross-sectional view of the large catch member taken along the line XX in FIG.

FIG. 5 is a partial vertical cross-sectional view showing a partially retracted state of the large catch member in a contracted state.

[Explanation of symbols]

 1 Support Pile 2 Height Adjusting Member 3 Form 4 4 joist 5 Large Pull 6 Large Pulling Member 10 Base 12 Guides 12a, 12b Through Hole 20 Lifting Body 21 Main Body 21a, 21b Main Hole 21c Sub Hole 22 Large Pulling Section 30 Wedge 33 Apical neck 34 Proximal neck

Claims (5)

[Claims] 1. A large pulling receiving member for supporting a large pulling which is adjacently provided under the distribution of joists on the lower surface of the formwork at the upper end while the lower end is connected to the height adjusting member disposed at the upper end of the support pile or the like. And a base for which the large catch member is connected to the height adjusting member, an elevating body for supporting the large draw which is vertically movable on the outer periphery of the base, and the base and the elevating body. In a large undercarriage structure in a supporting work that has a wedge that is connected so as to be able to project and retract from the lateral direction, in a main body formed in a tubular shape that constitutes an elevating body on the outer peripheral side of the guide part that constitutes the base. While being inserted so that it can be raised and lowered, a through hole for inserting wedges is opened in the lateral center of the guide part so that the through hole is aimed at the lateral center of the body part. A pair of main holes formed on the upper surface for inserting wedges, and connected to the upper ends of the main holes. A pair of sub-holes, which are formed to have a smaller width than the main hole and extend upward with a proper length, are opened, and the wedge side is formed to have a narrower width than the sub-hole. It has a cervical part and a proximal end cervical part, and is formed so that when the wedge retreats, the apical side cervical part and the proximal end cervical part are present in each of the sub-holes and the elevating body is lowered with respect to the base. Large undertaking structure for support 2. A large undercarriage structure for supporting work according to claim 1, wherein the guide portion is formed in a cylindrical shape similar to the main body portion. 3. The large undercarriage structure for supporting work according to claim 1, wherein the auxiliary hole is provided so that its vertical length is equal to or greater than the height of the wedge. 4. The large undercarriage in the support work according to claim 1, wherein the large overhanging portion forming the lifting body is formed in a gutter shape having a square U-shaped cross section which allows the accommodation of the large updraft. Construction 5. The wedge is capable of appearing and retracting along a direction transverse to the extending direction of the Daihiki.
Undertaking structure for supporting work