JPH083514Y2 - Reinforcement ring connection structure in earth retaining structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a connecting structure for reinforcing rings in an earth retaining structure for a shaft or an earth retaining structure for a tunnel, which is installed in civil engineering work.

[Conventional technology]

Conventionally, as a reinforcing ring connecting structure in a domed structure, as disclosed in Japanese Utility Model Publication No. 57-137699, a bolt is provided inside the outer flange of an H-shaped steel ring unit constituting the reinforcing ring. From the outside, the head of the bolt is fixed to the inner surface of the outer flange by welding, and the joint plate having a through hole for inserting the bolt is moved from the outside of the outside flange toward the outside flange, Through the through hole of the joint plate, screw the nut onto the bolt from the outside of the joint plate, and tighten the outer flange and the joint plate with the bolt and nut to connect the outer flange of the adjacent ring unit. There is known a structure for connecting the.

[Problems to be solved by the device]

In the case of the conventional connecting structure of the reinforcing ring, when the joint plate having the through hole for inserting the bolt is overlapped with the outer surface of the outer flange of the ring unit, the joint plate rises in a state where the joint plate is largely separated from the outer surface of the outer flange. Move, then move the joint plate toward the outer flange to insert the bolt into the through hole of the joint plate, then on the outer side of the joint plate, screw the nut onto the bolt and tighten with the tightening tool Since it is necessary to provide a large space near the joint plate insertion installation part, the amount of excess digging is large and the joint plate is inserted into the bolt and the nut is screwed into the bolt. I can not see, so I have to insert and screw in the feeling of groping,
Therefore, there is a problem that the connection work efficiency is poor.

An object of the present invention is to provide a connecting structure for a reinforcing ring in an earth retaining structure which can advantageously solve the above-mentioned problems.

[Means for solving the problem]

In order to achieve the above-mentioned object, in the connecting structure of the reinforcing ring in the earth retaining structure of the present invention, the corrugated steel plate 1
A large number of soil retaining liner members 2 each having a connecting flange provided around each other are connected to form a large number of liner rings arranged in series.
In a soil retaining structure in which a web 4 of a reinforcing ring 3 made of shaped steel is interposed and fixed, and an outer flange 6 of a ring unit 5 constituting the reinforcing ring 3 is connected by a joint plate 7 and a bolt, the joint plate A female screw member 9 arranged concentrically with the through hole 8 in the joint plate 7 is fixed to the outer surface of the ring plate 7, and the ring unit 5 is attached to the liner member 2.
Is provided with a bolt passage through hole 11 facing the through hole 10 of the outer flange 6, and the bolt 12 is inserted into the through holes 8 and 10 through the bolt passage through hole 11 and the female screw member 9 It is screwed to.

〔Example〕

 Next, this invention will be described in detail with reference to the illustrated example.

FIGS. 4 to 6 show an earth retaining liner member 2 used in an embodiment of the present invention, in which both sides in the width direction of a corrugated steel plate 1 curved in an arc shape,
Arc-shaped connecting flange extending parallel to the wave extension direction
13 are bent in series, and linear steel connecting flanges 14 are fixed by welding across both ends in the longitudinal direction of the corrugated steel plate 1 and the connecting flanges 13, and a large number of connecting flanges 13 and 14 are provided. A through hole 15 for bolt insertion of is provided,
A plurality of bolt passage holes 11 are provided on one side in the width direction of the corrugated steel plate 1, and a water collecting hole 16 is provided in the middle portion of the corrugated steel plate 1 in the width direction.

FIG. 7 and FIG. 8 show the joint plate 7 made of steel with the female screw member 9 fixed and the end of the H-shaped steel ring unit 5 to be connected separately. The four through holes 8 are provided, the four through holes 17 are provided at the bottom of the joint plate 7, and the through holes 8 are provided at the upper part of the outer surface of the joint plate 7.
A female screw member 9 arranged concentrically with is fixed by welding. In addition, two through holes 10 and 1 are provided at the upper and lower ends of the outer flange 6 of the ring unit 5, respectively.
8 is provided, and a through hole 20 for inserting a bolt turning tool facing the through holes 10 and 18 is provided at the upper and lower portions of the end of the inner flange 19 in the ring unit 5, and the web of the ring unit 5 is further provided. 4, a large number of through holes 22 are provided at intervals in the longitudinal direction of the ring unit.

An example of a case where a vertical shaft earth retaining structure having a circular cross section is constructed by using the earth retaining liner member 2, the ring unit 5, and the joint plate 7 to which the female screw member 9 is fixed will be explained. After providing a circular shallow recess, a large number of soil retaining liner members 2 are arranged side by side in a ring shape around the recess, and each soil retaining liner portion 2 is arranged.
By connecting the bolts to form the first-stage earth retaining ring,
Then, the recess is further dug down, and a large number of soil retaining liner members 2 are arranged in a ring shape along the lower portion of the first stage soil retaining ring, and the soil retaining liner members 2 adjacent in the circumferential direction of the recess are bolted. The soil retaining rings of the second stage are connected to each other, and the upper and lower soil retaining liner members 2 are connected by bolts.

Next, the recess is further dug down, and as shown in FIG. 1, a plurality of ring units 5 are arranged side by side under the second retaining ring, and then the joint plates 7 to which the female screw members 9 are fixed are adjacent to each other. The ring unit 5 ascends along the outer surface of the end of the outer flange 6 to arrange the through hole 8 of the joint plate 7 concentrically with the through hole 10 of the outer flange 6.

Then, a bolt 12 having a hexagonal hole in the head is inserted through the bolt passing through hole 11 of the soil retaining liner member 2 into the through hole 10 of the outer flange 6 and the through hole 8 of the joint plate 7, and
An L-shaped bolt rotating tool 23 screwed into the female screw member 9
Through the through hole 20 in the upper part of the inner flange 19 and the through hole 11 of the liner member 2 for soil retaining, and further the bolt rotating tool.
Fit the hexagonal end of 23 into the hexagonal hole of the head of bolt 12,
The bolt 12 is rotated and tightened by the bolt rotating tool 23, and the state shown in FIG. 1 is obtained.

Next, as shown in FIG. 2, the lower part of the end of the outer flange 6 and the lower part of the joint plate 7 in the ring unit 5 are
The bolt 12 and the nut 24 inserted through the through holes 17 and 18 are tightened and coupled to form the reinforcing ring 3.

Next, after the recess is dug down, as shown in FIG. 3, a large number of soil retaining liner members 2 are arranged in a ring shape along the lower portion of the web 4 in the reinforcing ring 3, and adjacent soil retaining liners are arranged. The members 2 are connected by bolts to form a third-stage earth retaining ring, and the connection flange 13 at the bottom of each soil retaining liner member 2 in the second stage soil retaining ring and each soil retaining ring in the third stage retaining ring. The connecting flange 13 on the upper portion of the liner member 2 and the web 4 of the reinforcing ring 3 interposed therebetween are tightened and coupled by the bolt 12 and the nut 24.

Similarly, similarly, the fourth-stage earth retaining ring is assembled and configured, the third-stage earth retaining ring and the fourth-stage earth retaining ring are connected by bolts, and then the reinforcing ring is attached to the lower portion of the fourth-stage earth retaining ring. 3 is assembled and configured, and the same assembly work is repeated thereafter.

In the case of the above-mentioned embodiment, the two-stage earth retaining rings and the reinforcing rings 3 are alternately arranged, but the three-fourth soil retaining rings and the reinforcing rings 3 may be alternately arranged.

The present invention can also be applied to a connecting structure of reinforcing rings in an earth retaining structure having a rectangular cross section, an oval cross section, or an oval cross section.

[Effect of device]

Since the present invention is configured as described above, the following effects can be obtained.

The joint plate 7 to which the female screw member 9 is fixed is attached to the ring unit 5
The joint plate 7 can be arranged at a predetermined position on the outer surface of the outer flange 6 by ascending movement along the outer surface of the outer flange 6 at the ring unit 5.
In this case, the amount of excess digging near the end of the outer flange 6 can be reduced so that the connecting work can be performed quickly, and the through hole 8 of the joint plate 7 can be replaced with the bolt passing through hole 11 of the soil retaining liner plate 2. Since it can be observed through the through hole 10 of the outer flange 6, it is possible to easily visually confirm that the joint plate 7 is arranged at a predetermined position on the outer side of the outer flange 6. On the inner side, the bolt 12 is inserted into the bolt passing through hole 11 of the soil retaining liner member 2 and the through hole 10 of the outer flange 6, and screwed into the female screw member 9 fixed to the joint plate 7. Therefore, the end portions of the ring unit 5 forming the reinforcing ring 3 can be easily and highly efficiently connected.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a vertical sectional side view showing a state in which an upper portion of an outer flange of a ring unit is connected, and FIG. 2 is a state of connecting an upper portion and a lower portion of an outer flange of a ring unit. FIG. 3 is a vertical cross-sectional side view showing a state in which the upper and lower liner members are connected by sandwiching the web in the ring unit to which the outer flange is connected. FIG. 4 is a front view of the soil retaining liner member, FIG. 5 is a plan view thereof, and FIG. 6 is a sectional view taken along line AA of FIG. FIG. 7 is a perspective view showing a ring plate to be connected to a joint plate to which a female screw member is fixed and an end portion separately, and FIG. 8 is a vertical sectional side view thereof. In the figure, 1 is a corrugated steel plate, 2 is a soil retaining liner member, 3 is a reinforcing ring, 4 is a web, 5 is a ring unit, 6 is an outer flange, 7 is a joint plate, 8 is a through hole, 9 is a female screw member, Reference numeral 10 is a through hole, 11 is a bolt passing through hole, 12 is a bolt, 13 and 14 are connecting flanges, 17 and 18 are through holes, and 23 is a bolt rotating tool.

Claims (1)

[Scope of utility model registration request] 1. A large number of liner members 2 for retaining soil, which are formed by providing a connecting flange around a corrugated steel plate 1, are connected to form a large number of liner rings arranged in series, and between adjacent liner rings. Reinforcement ring 3 made of H-section steel
In the earth retaining structure in which the outer flange 6 of the ring unit 5 constituting the reinforcing ring 3 is fixed by interposing the web 4 thereof, the joint plate 7 and the joint are attached to the outer surface of the joint plate 7. A female screw member 9 arranged concentrically with the through hole 8 in the plate 7 is fixed, and the liner member 2 is provided with a bolt passing through hole 11 facing the through hole 10 of the outer flange 6 in the ring unit 5, and the bolt passing through hole 11 is provided. 12 passes through the bolt passing through hole 11 and the through holes 8 and 10
The connecting structure of the reinforcing ring in the earth retaining structure which is inserted into the female screw member 9 and is screwed into the female screw member 9.