JP4527604B2 - Column material erection device and method - Google Patents

Description

  The present invention relates to an apparatus and a method for erecting a column material such as a steel column at a construction site of a structure.

  Pillars are transported to the construction site in a state where they are laid down in a truck or other incoming vehicle, lifted up by a crane or other hoisting machine from the state of being laid down horizontally, and set vertically at a predetermined position. The There are various conventional methods for erection, but the first method is to suspend a pillar that has been laid down horizontally by hanging it up with a main lifting machine, and at the same time lifting the phase number. Lift the lower part of the pillar with heavy equipment and gradually wind it up with the main lifting machine, operate the hoist to turn and undulate so that the wires of both do not become diagonal, and finally vertically only with the main lifting machine There are things that make it lifted.

  As the second method, as shown in FIG. 14, the lower part of the pillar material 1 is grounded only by a main crane or other heavy lifting machine (not shown), and the crane boom is secured so that the wire is not slanted while being rolled up. The column 1 is lifted upright by moving the tip. This method has been conventionally performed by those skilled in the art and is not related to the invention known in the literature.

  In the third method, both ends of a pillar are lifted in a horizontal state by a main crane via a device such as a chain block, and the pillar is brought into an upright state by a chain operation (see, for example, Patent Document 1).

In the fourth method, one end of a pillar is placed on an L-shaped end receiving carriage that moves on a gantry, and a crane suspension wire is slung and suspended on the other end of the pillar in a horizontal state. In this case, since one end of the pillar is placed on the L-shaped end receiving carriage as described above, the carriage moves on the pedestal using this carriage as a fulcrum, and the pillar is interlocked with the lifting work of the crane. It is built up on a gantry (see, for example, Patent Document 2).
JP-A-9-184294 Japanese Utility Model Publication No. 6-24141

  Among the above-described conventional examples, the first method requires a crane for a phase number, which increases the cost of using a lifting machine. Moreover, a space for installing the crane for the phase number is required separately, and the construction site is restricted. Furthermore, since it is a joint work by two cranes, skill is required for crane operation.

  In the second method, it is necessary to simultaneously operate the crane when determining the moving direction of the erection of the upper part of the column. At the beginning of the erection, as shown in FIG. Although it is located to the left of the support point B of the ground, as the erection progresses, the center of gravity A moves to the right and approaches the support point B. During the erection, the center of gravity A crosses the support point B and moves to the right. When it is located, the pillar head is swung to the opposite side, which is dangerous. In order to eliminate such inconvenience, a cart having a rotation mechanism attached to the lower part of the pillar has been proposed, but the cart is excessive.

  In the third method, in order to use the chain block, a lifting jig having power is required, and the lifting capacity of the crane is excessively increased accordingly.

  In the fourth method, since only one end of the column and only one side is supported by the receiving car, the centroid of the column is in the middle of the building as the erection proceeds as in the second method. Since the positional relationship between the position and the support point of the column is switched at the projection position, the column head may be swung to the opposite side from when it is erected.

  Also, in the case where the beam bracket for beam connection is attached to the column, such as a corner column, the vertical center of gravity is not located at the center of the column. If it is lifted in this state, it is dangerous to rotate in a horizontal state, which requires a step of rotating in advance in a horizontal state before it is lifted by a crane, and the workability is not good.

  Such inconvenience is noticeable in the case of a round column, but in the case of a prismatic column, the beam bracket is X-shaped when viewed from the side, and the two adjacent beam brackets are located at the lower part when viewed from the side. The state of supporting the entire column at two points is in a stable state. On the other hand, when the column is erected, it is supported by the edge of one side of the column, and the edge of this side is grounded, so it is necessary to change the direction from the support direction by the beam bracket to the support direction by the one side edge of the column. There is a need to rotate the entire column.

  The object of the present invention is to build up a column in a stable state without changing the positional relationship between the center of gravity of the column and the support point of the column in the middle of the building of the column. The pillar can be erected in the same orientation as the, and it is not necessary to rotate, improving safety, and when raising the pillar material, there is no need to erection the member that supports the pillar material together. It is an object of the present invention to provide an apparatus and method for erecting a pillar material.

This invention eliminates the inconvenience of the conventional example, and the invention according to claim 1 is a column cradle for supporting the lower end of the column material, and the column material is erected on the cradle body. The strut members with different heights are erected with a gap between them, and an oblique girder material is installed between the two strut members, and the upper surface is formed in a concave arc shape on the oblique girder material. A support girder is erected, and a support member that supports the front and rear ends of the column material by contacting the lower and front and lower ends of the column material is projected. A wheel is attached to the lower part of the cradle body. On the other hand, the gist of the present invention is that a steel bar that engages with the support beam is attached to the grounding portion of the column member to the support member .

Further, in the invention according to claim 2 , the pillars having different heights are erected on the cradle main body in the front-rear direction with respect to the erection direction of the column material, and the two columns are erected. A diagonal girder is installed between the columns of the column, and the upper surface of the diagonal girder is formed in a concave arc shape, and a supporting girder is installed, and the lower front and rear ends of the column are supported by contacting the lower front and rear ends of the column. Use a pillar pedestal with a support member protruding and wheels attached to the lower part of the cradle body. Set the cradle body with the lower support member positioned at the rear, The rear end of the bottom of the column that is laid horizontally on the member is abutted and supported by this support member. In this state, the column is erected forward with a crane, and the front end of the column is at the front position. If it comes into contact with a high-height support member, the column material is erected and the front end of the pillar material only with the high-height support member at the front position While supporting the one in which the subject matter that cause built a pillar to the vertical state.

According to the first and second aspects of the present invention, since the lower end of the pillar material is supported by the pillar pedestal, the pillar pedestal can be attached in the direction in which the pillar material is carried in by the loading vehicle and can be built up as it is. Therefore, it is not necessary to rotate the pillar material at the stage before building up. Also, the column material support point at the start of the column construction moves to the other side of the column material near the end of the construction, so that the positional relationship between the column material support point and the column material center of gravity is built. Since it is not changed in the opposite direction in the middle of raising, the pillar material does not shake greatly due to the movement of the support point at the final stage of building up and can be built up in a stable state.

Furthermore, since the column support is intended to support the load by contacting the front end or the rear end of the lower part of the column material, it is not built up together with the column material when the column material is raised. Therefore, it is not necessary to attach the column base to the column material and lift the column material and the column base together when the column material is erected, and workability and safety are improved.

In addition, since the lower part of the column member can be supported by the recess formed in the upper part of the support member, the support part of the column member on the support member is not displaced at the time of erection and can be erected in a stable state.

Furthermore, by attaching a steel bar to the column material, the steel bar fits into the recess of the support member, so that the column material is not detached from the support member and can be built up in a stable state, and the steel bar is recessed. It can be built up smoothly by rolling inside.

Also, since the bogie body can be moved following the construction of the pillar material with the wheels, the lower edge position of the pillar material can be moved smoothly, and there is no need to constantly move the tip of the crane boom directly above the top of the pillar. The operation by the lifting machine becomes easy.

  As described above, the column erection apparatus and method according to the present invention erects the column in a stable state without changing the positional relationship between the center of gravity of the column and the support point of the column during the column erection. It can also be built up in the same orientation as it was carried in with the loading car, and it is not necessary to rotate it, improving safety and supporting the pillar material when raising the pillar material It is not necessary to build up the members together, and workability is good. Further, such an operation can be easily performed with a single lifting machine without requiring a jig such as a chain block.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of a column material erection device according to the present invention, FIG. 2 is a plan view of the same, and a column material 1 is formed on each side surface of a column main body 1a which is a prism as shown in FIG. A beam bracket 2 for beam connection is attached in the circumferential direction.

  In the figure, reference numeral 3 denotes a column pedestal that supports the column material 1 when it is erected and has a cradle body 3a and a support member 4 erected on the cradle body 3a. It comprises a girder 5 using the H steel and the like, and a connecting girder 6 using the same H steel for connecting the opposing girder 5, and the girder 5 and the connecting girder 6 are combined in the form of a cross girder. .

  The vicinity of the ends of the two girder members 5 was connected by a connecting rod 7. The connecting rod 7 is used to prevent meandering travel when the pillar material 1 is erected and raised.

  For example, a chill roller is attached as a wheel 8 to the lower surface of the cradle body 3a. The wheels 8 are not necessarily provided.

  As the support member 4, support members 9 a and 9 b having different heights in the longitudinal direction are erected on the beam member 5 at intervals, and the height is rearward with respect to the upright direction of the column member 1. The column material 9a having a low height and the column material 9b having a high height are arranged in front.

  And the diagonal girder material 10 is constructed between these two support | pillar materials 9a and 9b, and the support girder 11a, 11b is constructed between the diagonal girder materials 10 of an opposing position. The support girders 11a and 11b are formed in a bowl-shaped concave arc shape on the upper surface. The distance between the support girders 11a and 11b at which the lower part of the column 1 is grounded at the same time is formed larger than the width of the column main body 1a, and even if the beam bracket 2 is asymmetrically attached to the column 1 The center of gravity was set so as to be positioned between the support beams 11a and 11b.

  On the other hand, although the erection piece 13 is attached to the side of the pillar material 1 to be built, a steel rod 12 that engages with the support girders 11 a and 1 b is attached to the erection piece 13.

  Next, a method of building up the pillar material 1 using the pillar holder 3 will be described with reference to FIGS. As shown in FIG. 10, the column base 1 of the present invention is disposed at the lower end of the pillar material 1 carried into the construction site in the horizontal orientation in which the adjacent beam brackets 2 and 2 are grounded as shown in FIG. .

  In this state, as shown in FIGS. 3 and 10, the support girder 11 a having a low height is positioned so as to receive the lower part of the column material 1 immediately below the steel rod 12 attached to the column main body 1 a. Then, a wire of a lifting machine such as a crane is coupled to the upper end of the column 1.

  The head of the pillar material 1 is lifted up and built up without turning the crane or raising or lowering the crane with the pillar holder 3 attached. Thereby, as shown in FIG. 4, at the start of lifting, among the steel rods 12 attached to the column main body 1a, only those located rearward with respect to the erection direction abut on the lower support beam 11a, The column material 1 is supported by the column support 3 with the support beam 11 a through the steel rod 12.

  In this state, the support point of the pillar material 1 is the position of the support beam 11a, and this position is located on the left side in FIG. At this time, since the steel bar 12 is engaged with the concave arc-shaped support surface of the support girder 11a, the steel bar 12 pushes the support girder 11a by simply lifting the column material 1 up with a crane. Since the column 3 is moved to a position where the base 3 is moved by the wheel 8 and the wire is not inclined, the crane operation can be simplified.

  As the erection of the column 1 progresses, the wheel 8 moves as shown in FIGS. 5 and 6, and the distance between the center of gravity of the column 1 and the support girder 11 a as a support point becomes shorter. The steel bar 12 located in the front, which has been floating, is also installed on the support beam 11b.

  In this state, the front and rear steel bars 12 are simultaneously grounded to the support girders 11a and 11b, respectively. However, since the heights of the support members 9a and 9b are different, the support girders 11a and 11b are inclined and arranged obliquely. Since the column 1 is in an inclined state, the center of gravity of the column 1 is still on the right side of the support girders 11a and 11b which are support points.

  From now on, as shown in FIG. 7, when the construction is continued, the steel rod 12 of the column 1 is installed only on the support beam 11b at the high position, and the support beam 11a at the low position until then is installed. The steel rod 12 that has been in contact with the ground comes to float. At this time, the support point of the pillar material 1 moves to the support girder 11b in the forward position, but the center of gravity of the pillar material 1 is still on the right side of the support girder 11b as the support point, and the positional relationship between the center of gravity and the support point changes. Does not occur.

  If the erection is further advanced from here, the center of gravity moves further leftward in FIG. 8, but the support point of the column 1 is moved to the support girder 11b which is the right support point. There is no change in the left-right positional relationship in FIG. 8 with the point, and the center of gravity is always kept in a fixed positional relationship with respect to the support point. Therefore, an unstable state that occurs when the center of gravity passes over the support point can be avoided, and safety can be ensured.

  Then, the movement of the column support 3 stops at a position where the column material 1 is in a vertical state as shown in FIG. 8, and the column material 1 is further lifted from this position as shown in FIG. At this time, since the steel rod 12 attached to the column 1 is only engaged with the support beam 11b in a contact state, if the column 1 is lifted as it is, it is separated from the column base 3.

  Further, since the interval between the support girders 11a and 11b is larger than the width of the column main body 1a at the time of building, the center of gravity of the column material 1 is located inside the left and right support girders 11a and 11b. The rotation of the column 1 can be prevented.

  Even when the wheel 8 is not provided, the positional relationship between the center of gravity and the support point can be kept the same. In this case, the column 1 is lifted up by the crane as in the case where the wheel 8 is provided. It is necessary to move the tip of the crane because the column base 3 does not move to a position where the wire does not become slanted by simply operating it.

  Moreover, if the steel rod 12 is attached to the pillar material 1, the pillar cradle 3 can be drawn smoothly by lifting the pillar material 1, but the steel rod 12 is not necessarily attached, as shown in FIGS. 12 and 13. The erection piece 13 provided in the column member 1 can be used to engage with the support beams 11a and 11b.

It is a front view which shows embodiment of the erecting apparatus of the column material of this invention. It is a top view which shows embodiment of the erecting apparatus of the column material of this invention. It is a 1st process figure showing an embodiment of a column material erection method of this invention. It is a 2nd process figure which shows embodiment of the construction method of the column material of this invention. It is a 3rd process figure which shows embodiment of the construction method of the column material of this invention. It is a 4th process figure which shows embodiment of the construction method of the column material of this invention. It is a 5th process figure showing an embodiment of a column material erection method of this invention. It is a 6th process figure showing an embodiment of a column material erection method of this invention. It is a 7th process drawing showing an embodiment of a column material erection method of this invention. It is a side view of the state which set the pillar material to the erection apparatus of the pillar material of this invention. It is a whole process figure showing an embodiment of a erection method of a pillar material of this invention. It is a side view of the state which set the pillar material of another form to the erection apparatus of the pillar material of this invention. It is a front view of the state which set the pillar material of the other form to the erection apparatus of the pillar material of this invention. It is process drawing which shows the conventional erection method of a pillar material.

1 Column material 1a Column body 2 Beam bracket 3 Column base
3a cradle body 4 support member 5 girder material 6 connection girder material 7 connection rod 8 wheel 9a, 9b support material 10 slant girder material 11a, 11b support girder 12 steel bar 13 erection piece

Claims (2)

A column pedestal that supports the lower end of the column material, and is placed on the cradle body in front and back with respect to the direction in which the column material is erected. A diagonal girder material is installed between the two strut members, and a support girder having an upper surface formed in a concave arc shape is installed on the oblique girder material, and abuts the front and rear ends of the column material, and the front and back surfaces of the column material. A support member for supporting each end protrudes, and a wheel is attached to the lower part of the cradle body. In addition, with respect to this pillar cradle, the grounding portion of the pillar material to the bearing member is engaged with the bearing girder. A column erection device characterized by attaching a steel bar . On the cradle body, the pillar members with different heights are placed with a gap between them, and the diagonal girder material is installed between the two pillar members. and, by erection of the bearing girder forms a top surface at an angle spar in a concave arc shape, projecting a bearing member for supporting the lower surface front and rear ends of the pillar in contact with the lower surface front and rear ends of the pillar, respectively, receiving base body A column base with a wheel base attached to the lower part of the base, with the base body set with the low-height support member located at the rear, and the low-height support member lying horizontally The rear end of the lower surface of the column is brought into contact with the support member, and in this state, the column is erected forward with a crane, and the front end of the column is in contact with a higher support member at the front position. If this is the case, build up the column material further and mount the column material vertically while supporting the front end of the column material only with the support member with a high height at the front position. Built cause method of pillar material which is characterized by causing built up.

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