JP3072972B2 - Frame system in slip form method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel frame system for stabilizing a system against various external forces during construction and maintaining its shape when a reinforced concrete structure such as a chimney or silo is constructed by a slip-form method.

[0002]

2. Description of the Related Art The frame form of the slip-form method is a "jajirobe-type" structure with low stability that can be supported by only a rod when viewed from the yoke alone.

[0003] Usually, there are mainly the following three methods for stabilizing the system. In each of the three methods, a temporary frame having a high plane rigidity (in some cases, a permanent frame) is bridged over the entire surface, and this method is used. The overall stability is measured by connecting the yokes.

(1) Center tower system In this system, a load such as a center tower for lifting is placed at the center of the system and suspended from a yoke. This is a system in which the system is placed in a prestressed state by the weight of the hanging part and stability can be obtained.

(2) Temporary (truss) frame system This is a system in which a temporary (truss) frame is bridged between yokes and each yoke is connected to this frame to stabilize the system.

(3) Simultaneous ascent method of a permanent roof, etc. A method of simultaneously raising a frame such as a permanent roof by a slip-form system, thereby utilizing the rigid body to measure the stability of the system.

In the conventional slip-form system, a frame that entirely covers a plane is required to secure the stability and maintain the shape of the frame as described above, and the system becomes large, complicated, and expensive. Become.

[0008]

SUMMARY OF THE INVENTION Accordingly, the present invention can satisfy the required performance by a simple and rational frame system, and particularly when a large-diameter structure such as a silo is constructed, a slip-form method having a great merit. The purpose of the present invention is to provide a frame system.

[0009]

According to the frame system in the slip form method of the present invention, a predetermined interval is provided across a frame (K) for constructing a yoke (1) composed of independent torii type frames. Four main chords (6) which are arranged on a large number of circles at intervals and each yoke (1) is arranged below a middle inner working floor (3A) and a middle outer working floor (3B), and a bundle connecting them Inner and outer ring beams (4A, 4B) and inner / outer ring materials (5A, 5B) at the top of the box-shaped inner and outer ring beams (8A, 8B) made of a material and lattice material (7). It is installed at almost the same level as the box-shaped inner and outer ring beams (4A, 4B), and is vertically built into the skeleton (K) to build a rod (13) that supports the entire vertical load of the system. , Connected to each of the yokes (1) The rod to bear the direct load (1
There is provided a hydraulic jack device (14) which climbs over 3).

According to the present invention, the upper internal work floor (9A) is provided on the top of the yoke (1) comprising the torii-shaped frame.
And an external work floor (9B). A lower internal work floor (12A) and a lower external work floor (12B) are provided below the middle internal work floor (3A) and the middle external work floor (3B).

By providing the inner and outer ring beams, which are lattice-like ring frames having a high plane rigidity, at substantially the same level as the mold, a simple and very reasonable form holding mechanism is realized.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a yoke 1 straddles a frame (for example, a silo wall) K constructed of a torii-shaped frame and has a predetermined interval (for example, 1.5
m) are arranged on a large number (for example, 96 sets) on the circumference. The yoke 1 has a movable part 2. The movable part 2 may be provided on the opposite side or both sides of the yoke 1, or may not be provided.

Each yoke 1 has an inner ring beam 4A disposed below a middle inner working floor 3A and a middle outer working floor 3B.
The outer ring beam 4B is integrated with the inner ring member 5A and the outer ring member 5B at the top.

Inner ring beam 4A and outer ring beam 4
B is a box type made up of four main chords 6 and a bundle / lattice 7 connecting them, as shown in FIGS. The inner mold frame 8A and the outer mold frame 8B are arranged at substantially the same level as the box-shaped inner and outer ring beams 4A and 4B.

An upper inner working floor 9A and an upper outer working floor 9B are provided at the top of the yoke 1 composed of a torii type frame.
B, a lower inner working floor 12A and a lower outer working floor 1 below B.
2B are provided.

A rod 13 for supporting the entire vertical load of the system is vertically built in the frame K to be constructed, and is connected to each yoke 1 to bear the entire vertical load.
A hydraulic jack device 14 is provided for climbing.

The yokes 1 each composed of an independent torii-shaped frame are arranged on a circumference across a frame (for example, a silo wall) K on which a yoke 1 is to be constructed. Box-shaped inner / outer ring beams 4A and 4B and a top inner / outer ring member 5 arranged at the bottom
The integration of A and 5B is intended to stabilize the entire system and maintain its shape, which is particularly advantageous when a large structure such as a silo is constructed.

[0018]

The performance required of the frame system is as follows: (1) the entire system maintains a stable structure, and (2) the rigidity required to maintain the shape is maintained against various external factors assumed during construction. Two things that you do.

The frame system according to the present invention is constructed by connecting each yoke with a box-shaped inner / outer ring beam and inner / outer ring members composed of four main chord members and a bundle member / lattice member connecting them. The whole is formed as one ring-shaped frame to maintain the stability of the system. (1) Hoop effect of the ring beam and the ring material: stability of the system against uniform load in the circumferential direction, and (2) ring Load transfer effect due to the vertical bending stiffness and torsional stiffness of the beam: Two effects of system stability against local loads resist various external forces, realizing a very simple and rational system.

[Brief description of the drawings]

FIG. 1 is a front view of a frame system.

FIG. 2 is a detailed plan view showing a yoke and inner and outer ring beams.

FIG. 3 is a view taken along line aa of FIG. 2;

FIG. 4 is a plan view showing a substantially semicircle of the frame system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Yoke 2 ... Yoke movable part 3A, 3B ... Middle inner / outer working floor 4A, 4B ... Inner / outer ring beam 5A, 5B ... Inner / outer ring material 6 ... Main chord material 7 ・ ・ ・ Bundled material / lattice material 8A, 8B ・ ・ ・ Inner / outer formwork 9A, 9B ・ ・ ・ Upper inner / outer working floor 12A, 12B ・ ・ ・ Lower inner / outer working floor

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasushi Adachi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Takehiko Nabeshima 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Mutsui Tarui 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Seiji Hamasaki 1 Kameicho, Takamatsu City, Kagawa Prefecture 3 Kashima Construction Co., Ltd. Shikoku Branch (72) Inventor Toshio Minamiguchi 1-2-2 Ecchujima, Koto-ku, Tokyo Kawateki Machinery Co., Ltd. (56) References JP-A-60-258866 (JP, A) JP-A-50-20516 (JP, A) JP-B-48-21245 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04G 11/22

Claims (2)

(57) [Claims] 1. Each of the yokes (1) is arranged on a plurality of circles at predetermined intervals across a frame (K) on which a yoke (1) composed of independent torii type frames is to be constructed.
Is the middle inner working floor (3A) and the middle outer working floor (3B)
Box-shaped inner / outer ring beams (4A, 4B) composed of four main chords (6) arranged at the lower part and bundles / lattices (7) connecting them, and inner / outer ring materials at the top ( 5
A, 5B), and the inner and outer formwork (8A, 8B) are arranged at substantially the same level as the box-shaped inner and outer ring beams (4A, 4B) to support the entire vertical load of the system. A rod (13) is vertically erected in the frame (K) to be constructed, and a hydraulic jack device (14) is connected to each of the yokes (1) to bear the entire vertical load and climb over the rod (13). A frame system in the slip form method characterized by the following. 2. An upper working floor (9A) and an outer working floor (9B) are provided at the top of the yoke (1) made of the torii type frame, and a middle inner working floor (3A) and a middle outer working floor (3B) are provided. ) Below the lower internal work floor (12A)
The frame system in the slip-form construction method according to claim 1, further comprising a lower external work floor (12B).