JP2647797B2 - Earth retaining shoring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth retaining support used for embedding a water pipe and a sewer pipe by an open-cutting method.

[0002]

2. Description of the Related Art Conventionally, in order to install a shoring for earth retaining,
As shown in FIG. 6, while excavating to a predetermined depth, several cuts 11 are lifted between the two prongs 10, 10 (flap corners) abutting on the opposing excavation surface with a scissor 12. It is general that the stopped frame is fitted, and then the both sides are raised, and a steel sheet pile 9 is driven into the outer surface of the 10, 10 to perform earth retaining, and further excavation is continued to be performed in a pit having a predetermined depth.

[0003]

However, there is no problem if the steel sheet piles are driven vertically, but the steel sheet piles on the left and right sides are slanted in a direction in which they approach each other or spread outward. In particular, if the shoring is driven in a divergent shape, the support of the shoring will be poor and the shoring of the frame will fall from the horizontal state in response to the driving of the steel sheet pile, and finally, In some cases, they fell and sometimes hindered construction.

The present invention has been made in order to solve the above problems.
An object of the present invention is to provide an earth retaining strut which can be surely driven vertically by a steel sheet pile and does not tilt during the driving.

[0005]

The solution of the present invention is characterized in that a cloth frame is provided with a plurality of building frames, and a face plate is attached between the two building frames facing the retaining side.

Further, it is preferable that each building frame is provided with a leg extending below the face plate.

[0007]

[Function] In order to construct a retaining wall using the above shoring,
Start digging, but after digging to about half the height of the shoring, hit the shoring from above and insert it into it.
Excavate the area surrounded by the fitted supports, drive in the supports, and then drive steel sheet piles along the outer surface of the faceplate of the supports. At that time, face plates are provided on both sides,
Since the steel sheet pile is driven with its face plate as a guide, it can be driven vertically without tilting.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to FIG. 1 in which a shoring body 1 is provided at each corner of a cloth frame 2 formed of a rectangular frame of rectangular steel. A building frame 3 made of a steel material having a rectangular cross section is vertically provided, and an auxiliary member 4 also made of a steel material having a rectangular cross section is provided in a frame shape at an intermediate portion (below a half of the entire length) of each building frame 3 in the longitudinal direction. A side plate 5 made of a metal plate (iron plate) is adhered to both side surfaces of the support body 1, that is, a longitudinal member of the cloth frame 2, a longitudinal auxiliary member 4 and the building frames 3, 3. The portion of each building frame 3 extending downward from the face plate 5 and projecting therefrom is formed as a leg 6. In addition, hooks 7, 7 are protrudingly provided so as to be hung and conveyed to the middle and left and right portions of the intermediate portion of the cloth frame 2.

The example shown in FIG. 2 is longer than that of the example shown in FIG. 1, in which an intermediate auxiliary member 8 is provided between the cloth frame 2 and the auxiliary member 4 in a frame shape. Is the same as in the above example.

In order to perform earth retaining using the shoring of the present invention, for example, as shown in FIG.
Is 2 m, a height H of 1.5 m as shown in FIG.
First, excavate to a depth of about 50 cm to 1 m depending on the soft hardness of the soil at the place to be excavated, insert the strut into it, and tap it, and bury the lower part of the strut in the soil . At this time, if the soil is soft, it can be buried all at once to a predetermined depth, but if it is hard and cannot be deeply buried, the inside of the shoved support is excavated and hammered again. In this way, as shown in FIG. 4, after the support is completely fitted in its entire height, steel sheet piles 9 are driven into the both sides along the outer surface of the face plate 5 of the support, and deeper than the predetermined depth of the pit. After applying earth retaining like this,
The soil in the shoring is dug up to form a pit having a predetermined depth as shown in FIG.

[0011]

According to the earth retaining support according to the present invention,
Face plates are attached to both sides of the shoring body in the shape of a turret.Fit the steel sheet pile along the outer surface of the face sheet after inserting it into the hole dug to the middle, Since it is driven as a guide, it can be driven vertically without inclination, and the retaining wall made of the driven steel sheet pile on both sides can be held by the support body.

Further, if the support body is provided with legs protruding below the face plate, when the support is driven, each leg pierces the soil and can be stably held in the hole. Therefore, when the steel sheet pile is driven, even if a pushing force is applied to the support, there is no possibility that the support is tilted, and the steel sheet pile can be installed on a strong earth retaining structure.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an earth retaining shoring according to the present invention.

FIG. 2 is a front view showing a similar example.

FIG. 3 is a cross-sectional view showing a state in which the shoring is fitted into a slightly dug hole when the shoring is performed using the shoring support according to the present invention.

FIG. 4 is a sectional view showing a state in which a shoring is driven and then a steel sheet pile is driven.

FIG. 5 is a cross-sectional view showing a state in which the pit is excavated to a pit having a predetermined depth after retaining the soil as shown in FIG. 4;

FIG. 6 is a cross-sectional view showing a state where earth retaining is performed using a conventional shoring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support body 2 Cloth frame 3 Construction frame 4 Auxiliary material 5 Face plate 6 Leg 9 Steel sheet pile

Claims (2)

(57) [Claims] 1. A cloth frame (2) comprising a plurality of building frames (3),
A shoring for earth retaining, characterized in that a face plate (5) is attached between both building frames (3) facing the earth retaining side. 2. An earth retaining shoring according to claim 1, characterized in that each building frame (3) is provided with legs (6) extending below the face plate (5).