JPS6175118A - Pc pile and method of building steel skeleton building employing said pc pile - Google Patents

Abstract

PURPOSE:To improve working efficiency, by a method wherein a PC pile, having mounting bands integrally wound around the outer periphery of an intermediate part in a longitudinal direction with a steel pipe, is erected in a range of from an underground to a ground surface, and beam and floor slab are integrally joined to the mounting bands by means of joint metals. CONSTITUTION:Joint parts are formed at both ends in a longitudinal direction of a PC pile 1, and mounting bands 3, 4 and 5 are attached to an intermediate part in the longitudinal direction. A PC steel rod 4, serving to introduce prestress, is inserted through each hole of a horizontal stiffener 3a, and concrete is placed to integrally form the PC pile 1. A horizontal structure member 6, such as beams, floor slabs, are spanned between the PC piles 1 through the mounting bands 3, 4 and 5, the PC pile serving as a column. This enables the PC pile to have function to serve as a vertical structure member, such as column materials, in addition to function to serve as a pile material, resulting in the possibility to reduce a cost and improve working efficiency.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention includes a PC pile as a vertical structural member,
The present invention relates to a method for constructing a steel frame building using the PCC pile.

(Prior Art) In conventional steel structure buildings, PC piles are buried directly under footing foundations in order to reinforce the foundation when the necessary bearing capacity cannot be obtained from the ground surface in contact with the foundation. Buildings with steel structures are now being constructed by attaching structural members such as columns and beams to the steel structures.

(Object of the invention) In the present invention, the PC pile is made to have the function of a pillar, which is one of the groove materials, in addition to its original warming function as a reinforcing member of the foundation, thereby reducing costs and The purpose is to measure the improvement of confectionery making efficiency.

(Structure of the Invention) The gist of the present invention is to provide a PC pile as a vertical structural member in which a PC pile made of steel pipe is integrally wrapped around the outer periphery of the intermediate portion, and
This is a method of constructing a building in which beams, slabs, etc. are integrally joined to C-piles as pillar members.

(Example) The present invention will be explained below with reference to the drawings. FIG. 1 is an overall front view of the PC pile 1, FIG.
FIG. 3 shows IoJ cross-sectional views.

Similar to conventional PC piles, PC pile 1 is made of hollow conocrete and has a predetermined length.
A joint part 2゜2 is provided for collapsing with the pile, and the P
Attachment bands 3, 4.5 are provided at a longitudinally intermediate portion of the C pile 1 at predetermined intervals.

Each of these mounting bands is a steel pipe with a diameter equal to the outer diameter of the PC pile 1, which is buried integrally with the PC pile unless the PC pile is manufactured in a factory or the like. Hole? : The provided horizontal stiffener=3a is provided in a protruding manner in an annular shape. A PC steel rod 4 is pushed through each hole of the horizontal stiffener 3a to apply prestress, and this PCC
Conc IJ-1- in the part excluding the steel bar 4 Zenbo part 1a
1b is poured to form an integrated PCC pile. In addition, the PC pile of this application is that! Depending on the situation, a short attachment band may be provided at one or more locations, and depending on the application, a long attachment band may be provided over the entire length.

Next, a first embodiment in which the PC pile is used as a structural member of a steel frame structure will be described. The PC file 1 is shown in the front view of the constructed steel building shown in Fig. 4 and in Fig. 5.
As shown in the same side view shown in the figure, it is driven into the ground using various ridge construction methods in the United States.

The mounting bands 3, 4 are connected between each PC pile 1, 1 (or the mounting bands 3, 4 using the PC pile as a column (vertical structural member)).

A horizontal structural member 6 such as a beam or a urine slab is installed via the horizontal structure 5 .

The installation of these horizontal structural members 6 is as shown in FIG.
After attaching a joint steel frame 7 made of type steel or the like to the mounting band 3, rigidly join a horizontal counterfeit member 6 made of type steel or the like, or attach a gusset plate 8 to the attachment band 3 and attach a horizontal structural member to this. 6 and place materials 9, 9 are integrally attached by pin-joining each other.

In addition, in the case of a basement of a building, etc., as shown in Fig. 7, an ID member 1-0.10 is welded and protruded from the mounting band 3, and a simple retaining wall 11 made of a steel plate is attached to this. or fifth
As shown in the figure, a retaining pile 12 is provided in the middle part, and a horizontal sheet pile 1 is attached to this.
3 to provide earth retention and water stoppage.

Furthermore, the base portion 14 includes anchor bars 15 extending radially from the mounting band 3 of the PC bail 1, as shown in FIGS. 8 and 9. :s, and after arranging the base reinforcement 16 around it, the 6-dimensional flat is fixed to the PC pile 1 by pouring concrete into the formwork (not shown) at the same time as the underground beam 17iii that will make instant contact. The second step was advanced to the slab.
An example will be explained below.

As shown in the front view 2 of Figure 1O and the plan view of Figure 11, P
C pile] mounting band 3 Connect each joint plate 18 that extends radially in contact with the VC pile and connect each reinforcing plate 19 concentrically with the PC pile 1.
Connect them to each other.

The PC pile 1 is used as a column member to connect the adjacent PC piles 1ifJ with each other as shown in FIG. As shown in FIG. 13, two angle irons are bolted back to back to the joint plate 18, and on the top and bottom of this joint beam 20 there are support bars 21, 22 that are perpendicular to the longitudinal direction of the joint beam. Multiple slab main reinforcements parallel to the direction 2
3. Reinforce each of 24 and wrap the main reinforcement of the slab')vJ
25 is wrapped.

Further, an auxiliary follower plate 26 is provided adjacent to the joint plate 18, and the upper part of the auxiliary joint plate is bolted or 1L-1L welded to the connecting beam 20, and the lower part is made of diagonal iron. It is received in the joint plate 18 by a strut 27. still,
The respective ends of the slab main reinforcing bars 23 and 24 are inserted into the gap formed between the attachment band 3 of the PC pile 1 and the reinforcing plate 190 from above and below, respectively.

Further, on the outer periphery of the PC pile 1, a socket 28 which is recessed at the lower end of the mounting band 3 is provided, and this support plate 28Mζ
A lath extension frame 29 to which an extension line is attached is provided in an inclined manner protruding toward the lower side of the light hand temporary 18, the auxiliary parking plate 26, the diagonal support member 27, etc. This lath formwork 29 has a cantilevered corner reinforcing beam 30 whose one end is joined to the lower part of the diagonal joint plate 18 to which the connecting beam 20 is not attached, and an intermediate portion welded to the other end of the reinforcing beam 30. Its own end is attached to the slab main reinforcement 24, etc., and the reinforcement 7 is fixed by the reinforcing reinforcement 31v.

Then, the PC pile 1 and the connecting beam 2o are integrally joined by pouring concrete into a formwork (not shown) P-3, and a sill slab 32 is constructed between each gap 20. At this time, as shown in FIG. 14, prestress is introduced by means of a tensile member 33 made of round copper or the like with a turnbuckle, whose one end is connected to the auxiliary steel board 26.

In other words, a mounting plate 34 is installed in the IB1 part of the tethering rice 20 installed between the PC piles 1.1 with a power output of mW in the same manner as in the case of the joint plate 18 shown in FIG. 35 are pivotally attached, and a locking piece 36 protrudes from the tip of the bundle material 35. The concrete is placed to introduce prestress. Note that the tension member 33 is temporary and will be dismantled and removed after installation.

(Effects of the Invention) As is clear from the above examples, according to the PC pile of the present invention and the method of constructing a steel frame building using the PC pile, in addition to the function as a conventional pile material, it can also be used as a vertical structural member such as a column material. Because this new function has been added, it is possible to reduce costs and improve work efficiency compared to the conventional method of constructing piles and columns separately.

In particular, various types of joint hardware can be attached to the mounting band wrapped around the PC pile, as in the above embodiment, and horizontal structural members such as beams and floor slabs can be easily joined together via these joint hardware. This makes it extremely easy to construct steel buildings.

[Brief explanation of drawings]

All drawings show embodiments of the present invention.
The figure is an overall front view of the PC pile, and the second figure is the same main part! 3 is a cross-sectional view of the same, FIG. 4 is a front view of the constructed steel building according to the first embodiment, and FIG. 10 is an explanatory diagram of the connection state between the PC pile and the horizontal structural members of each building in the same example, and FIG.
Fig. 11 is a plan view of the flat slab constructed in this example, Fig. 12 is an explanatory diagram showing the state of interconnection of PC piles in the same example, and Fig. 13 is an enlarged view of the main parts. The sectional view and FIG. 14 are explanatory diagrams of four prestress states. 1] Explanation of symbols] 1... PC pile 1a Hollow part 1b - Concrete 2... Joint part 3.4.5...
・Mounting band

Claims (1)

[Scope of Claims] 1. A PC pile characterized in that a mounting band made of a steel pipe is integrally wrapped around the outer periphery of a longitudinally intermediate portion. 2. A PC pile with a mounting band made of steel pipe wrapped integrally around the outer periphery of the intermediate part in the longitudinal direction is erected from underground to above ground, and the PC pile is used as a pillar member and is attached to the mounting band via a joint hardware. A method for constructing a steel frame building using PC piles, which is characterized by integrally joining together a floor slab, etc.