JP2876182B2 - Joint foundation for temporary shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary shutter joint base in which a temporary shutter installed at an entrance of a temporary enclosure at a construction site is fixed to a pile used in a mountain retaining method.

[0002]

2. Description of the Related Art Conventionally, when a temporary shutter is installed at a doorway of a temporary enclosure temporarily provided at a boundary of a building site, a wide and tall temporary shutter is used to carry in and out a large vehicle, civil engineering equipment and materials. Although it must be used, such a temporary shutter is very heavy, and since the shutter body is erected between the upper ends of a pair of columns, the center of gravity is at the top and the balance is poor, so the volume for supporting the temporary shutter is The construction work of a large foundation is necessary,
In addition, detailed structural calculations are required to prevent accidents such as the collapse of the temporary shutter, which is extremely troublesome.

Further, in order to construct a building foundation and an underground structure, a total excavation is performed to excavate a site slightly wider than the first floor, and a mountain retaining method for preventing collapse of an excavated surface during such excavation is known. Before the excavation, a large number of piles are driven into the periphery of the portion to be excavated at predetermined intervals, and the inside is entirely excavated with a power shovel or the like, and a horizontal sheet pile is sequentially inserted between the piles. I have.

[0004] However, since recent buildings are often built just off the site, the excavation section is naturally also on the site,
As a result, there was no space to build a large-volume foundation for temporary shutters, and it was difficult to respond.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a temporary shutter joint base in which a temporary shutter is attached to a pile in use for a mountain retaining device so that the temporary shutter can be installed even when the building is very close to the site boundary line. Is to be provided.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a temporary shutter to be installed at an entrance in a temporary enclosure of a building site based on the above-mentioned prior art requires a work of constructing a large-volume foundation based on detailed structural calculations. Considering the difficult task of installing temporary shutters when the building is at the very end of the site, a joint base is constructed with a base mounted on a pair of base beams and excavated for building foundations and underground structures Of a number of piles for mountain retaining in the part, a pair of foundation beams are laid in parallel between upper ends of a pair of piles adjacent to each other at positions corresponding to the pair of columns in the temporary shutter,
By connecting the support of the temporary shutter to the support legs integrally fixed to the upper surface of the base plate by the connection means using bolts and nuts, the pile body driven deep into the ground and attached with the joint foundation is formed. The object of the present invention is to solve the above-mentioned problem by providing a temporary shutter as a foundation pile of a temporary shutter so that the temporary shutter can be installed even if there is no room between the site boundary line and the excavation part.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
Are fixed to the piles P, Pa... Used in the retaining of the excavation part A. The joint foundations 1 and 1a are arranged in parallel between the pair of adjacent piles P and Pa, respectively. It is composed of a pair of base beams 2, 2a to be erected, a base L mounted on and fixed to the base beams 2, 2a, and a base 3 connecting the lower ends of La. The pair of piles P and Pa at two locations corresponding to (1) and (2) form a foundation pile B and Ba.

The piles P, Pa... Are I-section steels. The flanges F, Fa are parallel to the direction in which the piles P, Pa. Is substantially the same as the ground surface.

First, the base beams 2, 2a will be described.
, 4a... Are a pair of grooved steels which are the main components of the base beams 2, 2a. Bolt holes 5, 5a... Are formed at both longitudinal ends of the webs of the grooved steels 4, 4a. A plurality of bolts H, Ha... Corresponding to the bolt holes 5, 5a... Are provided in the foundation pile B, the flanges F, Fa of the Ba, and the grooved steels 4, 4a. The flanges F, Fa are sandwiched at both ends of the back-to-back state, and the bolt holes 5, 5a,.
, And two nuts 7, 7a are screwed into the protruding ends of the fixing bolts 6, 6a, so that the base beams 2, 2a are interposed between the foundation piles B, Ba. Are laid in parallel.

Reference numeral 8 denotes a bolt insertion portion penetrating in the longitudinal direction of each of the base beams 2, 2a.
In the present embodiment, a long gap portion 9 in the longitudinal direction of the grooved steel 4, 4 a formed between the grooved steel 4, 4 a forms a bolt insertion portion 8 in the present embodiment.

Incidentally, the flanges F in each of the base beams 2, 2a,
Spacing plates 10, 10 on both ends of the groove 4 on the outer side of Fa
a is integrally fixed to widen the interval between the bolt insertion portions 8 between the grooved steel bars 4 and 4a.

Next, the base 3 will be described.
Is a rectangular base plate, and bolt holes 12, 12a,... Are provided at predetermined intervals in portions of the base plate 11 corresponding to the bolt insertion portions 8 of the base beams 2, 2a.

Reference numerals 13, 13a... Denote fixing bolts for fixing the base 3 to the base beams 2, 2a, and the bolt insertion portions 8 through one washer plate 14 disposed under each of the base beams 2, 2a. The fixing bolts 13, 13a ... are inserted from below into the bolt holes 12, 12a ...
Through the base plate 11 and project upward from the base plate 11. Two nuts 16 and 16a are screwed into the respective protruding ends via washers 15 to mount the base table 3 on the base beams 2 and 2a. Has been established.

Reference numerals 17, 17a... Are posture adjusting bolts of the base 3 with respect to the base beams 2, 2a. The posture adjusting bolts 17, 17a.
The lower ends of the posture adjusting bolts 17, 17a... Abut against the upper surface of the inner grooved steel 4a of the base beams 2, 2a. 18a… fixed and posture adjustment bolts 17, 17
By the rotation of a..., the lower end can be made to protrude and retract from the lower surface of the base plate 11.

Reference numeral 19 denotes a support leg integrally fixed at the center of the upper surface of the base plate 11, and a rectangular horizontal connecting plate 21 is integrally fixed to an upper end of a pillar 20 having an H-shaped horizontal cross section. The bolt holes 22, 22a,...
The connecting bolts 23 inserted in 22a and the two nuts 24, 24a screwed into the protruding ends of the connecting bolts 23 constitute connecting means 25 for connecting the support L and the lower end of La.

In the drawings, 26, 26a are ribs provided on the grooved steel 4 only on the outer surface side of the flanges F, Fa, 27, 27a are ribs provided below the connecting plate 21, and 28, 28a are supporters. A triangular plate-shaped rib provided on the side of the leg 19.

Next, a method and an operation of mounting the temporary shutter joint foundation according to the present invention will be described. First, the temporary foundations P, Pa... Excavating the ground around the upper end of the pair of foundation piles B and Ba located at the corresponding positions of the respective columns L and La of the shutter S to a predetermined depth, and then excavating the flange F,
The bolt holes 5, 5a... Of the grooved steel 4 on the outer surface side of Fa are aligned with the flanges F of the foundation piles B and Ba, the bolt holes H and Ha of Fa, and the adjacent foundation piles B and Ba are adjacent to each other. The grooved steel 4 is attached to the foundation piles B and Ba so that the fixing bolts 6, 6a... Are inserted so as to match with the webs, and the fixing bolts 6 are inserted into the bolt holes 5, 5a. , 6a ... are inserted, and after the inner grooved steel 4a is set, the fixing bolts 6, 6a ...
Two nuts 7 and 7a are screwed into each of the protruding end portions of the base piles B and Ba, and the base beams 2 and 2a are laid in parallel between the foundation piles B and Ba.

Next, the base plate 11 of the base 3 is mounted on the base beams 2 and 2a, and a washer plate 14 is disposed below each of the base beams 2 and 2a. 13, 13
a through the bolt holes 12, 12 a, and projecting upward from the bolt holes 12, 12 a, and two nuts 16, 16 a are screwed into the respective protruding ends of the fixing bolts 13, 13 a via the washer 15. Stand 3
Is not horizontal, the posture adjusting bolts 17, 17a are appropriately rotated to protrude the lower ends, and both joint bases 1,
The base table 3 in 1a is horizontal and at the same level, and the nuts 16, 16a screwed into the fixing bolts 13, 13a... Are completely tightened to firmly integrate the base beams 2, 2a and the base table 3.

Then, the temporary shutter S is suspended by a crane or the like, and the columns L and La are supported by the support legs 19 of the base 3.
, The connecting bolt 23 is inserted into each of the bolt holes 22, 22a,..., And two nuts 24, 24a are screwed into the protruding ends of the connecting bolts 23, so that each of the columns L, La is connected and integrated with the base 3 and a temporary shutter S is installed.

The specific method of adjusting the horizontal position of the base table 3 by the posture adjusting bolts 17, 17a is as follows.
When the support L and La are inclined in the left and right direction, the two pieces on the one side of the support leg 19 are adjusted.
The two pieces on the other side and the two pieces on the other side are adjusted as a set.

Finally, earth and sand are buried in the concave portion of the ground on the upper end side of the foundation pile B and Ba, or concrete is poured.

If the bolt insertion portion 8 is horizontally long, the position of the base 3 with respect to the base beams 2 and 2a can be adjusted. Therefore, the base 3 in the joint bases 1 and 1a is adjusted to match the width of the temporary shutter S. Are slid and positioned so that the distance between them can be adjusted.

[0023]

In summary, the present invention provides a method of forming a pair of adjacent piles P, Pa constituting the foundation piles B, Ba of the temporary shutter S out of a number of piles P, Pa. A pair of base beams 2, 2a are installed in parallel between the upper ends, and support legs are integrally fixed on the base plate 11, on the base beams 2, 2a.
19 Since the base 3 provided with the connecting means 25 for connecting the column L of the temporary shutter S and the lower end of La on the upper part of the temporary shutter S is mounted and fixed, the piles P, Pa are connected via the base beams 2, 2a, the base 3 and the like. Since the temporary shutter S is to be attached to the excavation part A, the temporary shutter S can be installed even if the excavation part A is just near the site, and the piles P, Pa, which are deeply driven into the ground, are the foundations of the columns L, La. Since the piles B and Ba are used, the temporary shutter S can be firmly installed without the need to separately construct a foundation dedicated to the temporary shutter S.

Further, since the bolt insertion portion 8 is penetrated in the longitudinal direction of the base beams 2 and 2a, and the bolt insertion portion 8 is formed long in the longitudinal direction of the base beams 2 and 2a, On the other hand, the base 3 can be slid laterally with the fixing bolts 13 and the nuts 16 and 16a loosened, and the base 3 can be fixed to the base beams 2 and 2a at appropriate places. Can be adjusted according to the width of the temporary shutter S even if there is an error in the driving pitch of the bolts or the dimensions are not specified, and the fixing bolts 13, 13a. Since the bolts 12 and 12a of the base plate 11 are protruded from the base plate 11 and the nuts 16 and 16a are screwed into the protruding ends thereof, the joint foundations 1 and 1a can be disassembled into base beams 2 and 2a and a base base 3, respectively. Beam 2,
After attaching 2a to the foundation piles B and Ba, the base 3 can be attached to the foundation beams 2 and 2a. Therefore, the work space for attaching the foundation beams 2 and 2a is increased, and the foundation pile B and The work of attaching the base beams 2, 2a to Ba can be facilitated.

Also, a pair of grooved steel members 4, 4a are opposed to each other in a back-to-back state, and the flanges F, Fa of the foundation pile B, Ba are sandwiched and fixed at both ends of the grooved steel members 4, 4a. Since the base beams 2 and 2a are formed, the components of the joint foundations 1 and 1a can be formed with the existing shaped steel and further downsized, so that they can be easily handled during transportation and space saving during storage. Further, since the portion between the grooved steels 4 and 4a is the bolt insertion portion 8, the bolt insertion portion 8 becomes longer in the longitudinal direction of the grooved steels 4 and 4a. The fixed position can be adjusted.

Further, the posture adjusting bolts 17, 17a.
Vertically screwed from above near the four corners of 11 and the lower end was made to be able to protrude and retract from the lower surface of the base plate 11, so the foundation piles B and Ba were not driven vertically or there was an error in the amount of driving. If there is, the pillars L and La of the connected temporary shutter S naturally do not become vertical, but by appropriately screwing in the posture adjusting bolts 17, 17a on the inclined side and projecting the lower end portion from the lower surface of the base plate 11, Since the base 3 is tilted independently with respect to the base beams 2 and 2a, the base 3 can be independently leveled even if the base beams 2 and 2a are not horizontal. Ready to use
.. And the fixing bolts 13, 13 a, and the nuts 16, 16 a screwed into the fixing bolts 13, 13 a. The practical effect is extremely large, such as the provision of a temporary shutter S corresponding to Ba.

[Brief description of the drawings]

FIG. 1 is a plan view of a joint foundation according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a sectional view showing an installation state of a joint foundation.

FIG. 4 is a plan view showing an installation state of a temporary shutter.

FIG. 5 is an enlarged side view of a temporary shutter.

FIG. 6 is a reduced front view of FIG. 5;

FIG. 7 is a main part front view showing a state in which a column of a temporary shutter is vertically adjusted.

[Explanation of symbols]

 2, 2a Base beam 3 Base 4, 4a Grooved section 8 Bolt insertion part 11 Base plate 12, 12a… Bolt hole 13, 13a… Fixing bolt 16, 16a Nut 17, 17a… Posture adjusting bolt 19 Support leg 25 Connection Means A Excavated part B, Ba foundation pile F, Fa flange L, La column P, Pa ... Pile S Temporary shutter

Claims (4)

(57) [Claims] 1. A pair of foundation beams are installed in parallel between upper ends of a pair of adjacent piles constituting a foundation pile of a temporary shutter among a plurality of piles for retaining in an excavation part, and the foundation is mounted on the foundation. A joint base for a temporary shutter, wherein a base table provided with a connecting means for connecting to a lower end of a column of a temporary shutter is mounted and fixed on a support leg fixed on an upper surface of a base plate on a beam. 2. A bolt insertion portion penetrating in the longitudinal direction of the base beam, and the bolt insertion portion is formed long in the longitudinal direction of the base beam, and a fixing bolt inserted into the bolt insertion portion is provided in a bolt hole of the base plate. 2. The joint base for a temporary shutter according to claim 1, wherein said joint base further protrudes and a nut is screwed onto said protruding end. 3. A pair of grooved steel members are provided facing each other in a back-to-back state, a flange of a foundation pile body is sandwiched and fixed at both ends of the grooved steel members to form a base beam, and bolts are formed between the grooved steel members. 3. The joint base for a temporary shutter according to claim 2, wherein the joint base is an insertion portion. 4. A base plate according to claim 1, wherein the posture adjusting bolt is vertically screwed in from above the vicinity of the four corners of the base plate, and the lower end thereof is allowed to protrude and retract from the lower surface of the base plate. Joint base for temporary shutter.