JPS6016698A - Pipe parallelly arranging method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe parallel construction method when constructing an underground structure across a traffic route.

In the conventional pipe parallel construction method (by roof construction method or armor construction method), pipes are installed in parallel along the cross-sectional contour of the underground structure (for example, a tunnel) to be constructed. In this method, the pipes are installed on the side wall in a vertically overlapping manner, but the work of relocating the pipe driving machine in the vertical direction is rather troublesome.

The present invention aims to omit the pipe row on the side wall by extending the pipe row on the top wall laterally.
The details will be explained based on one illustrated embodiment.

In the figure, 1 is a traffic route such as a railway or road, and 2 is an underground structure constructed across the traffic route 1.

In the construction method of the present invention, first, at least four (four in the figure) support piles are driven along both sides of the traffic road 1, but the support piles 31 + 32 + 33 + 34 (41
r 42 + 43 + 44) may be either ready-made or cast in place.

The interval between the supporting piles 32133 (42143) is the projected length of the underground structure 2 with respect to the traffic route 1 (the distance between the underground structure 2 and the traffic route 1 is
(if the width is perpendicular to the width), and
Support piles 31132 (41142) and 33, 34 (4
3+44) is the distance between the intersection of the soil slope line S drawn from both ends of the bottom of the underground structure 2 and the level of the top wall of the underground structure 2 to the axis of the support piles 31 (41) and 34 (44). death·
As a tentative guideline, it is determined that the

Next, support piles 31132 + 33134 (41142
143144) After placing the support beams 5 (6) on top and rigidly connecting each support pile with reinforcing bars, etc., a large number of pipes 7, 7... are installed in parallel between the support beams 5 and 6 on both sides. , each pipe 7 is advanced through the soil at right angles from the support beam 5 on one side toward the support beam 6 on the other side, and both ends are supported on the support beam 5.6.

The cross-sectional shape of the pipe 7 is arbitrary, and if the pipe 7 is provided with joints on both sides and a connecting part 8 is provided between adjacent pipes 7 and 7 as shown in the figure, the pipe rows can be integrated. be able to.

After forming the above-mentioned pipe rows, the live load of the traffic road 1 can be received by the pipe rows, so the underground structure 2 is constructed between the support piles 32 r 33 (42 r 43) in this state.

The underground structure 2 may be constructed of cast-in-place concrete or ready-made concrete.

When constructed with cast-in-place concrete, support piles 32
The space between the support piles 32133 (42143) is mechanically excavated while providing earth retaining between +42 and 3a +43, but the earth retaining may be of a simple type that can withstand lateral earth pressure.

When the pipe row is left as a permanent structure, the thickness of the concrete on the side wall can be made thinner, and since the top wall is composed of the pipe row, it is only necessary to apply a decorative finish to the bottom ff1l+.

If a ready-made concrete body is used, it is advanced by an indexing or propulsion method and set in a predetermined position, but the concrete body is formed into a U-shape when leaving a row of pipes.

As is clear from the above explanation, the construction method of the present invention performs construction of an underground structure that crosses a traffic route while fully supporting the live load of the traffic route with pipe rows, so construction can be carried out easily and safely. Moreover, since the pipe rows extend only horizontally, it is easy to change the machine when forming the pipe rows, and the overall construction period is shortened, which is advantageous in terms of cost.

[Brief explanation of the drawing]

The drawings are explanatory diagrams of one embodiment of the present invention, in which FIG. 1 is a side view and FIG. 2 is a sectional view taken along the line X--X in FIG. 1. In the diagram, l... Traffic route, 2... Underground M9 structure, 31,
3□. 33134 + 4+ + 42 + 43 + 44
... Support pile, 5, 6... Support beam, 7... Pipe,
...Patent applicant Hiroshi Sometani, patent attorney for Fudo Construction Co., Ltd., Japan National Railways

Claims (1)

[Claims] At least four support piles are driven at specified intervals on both sides of the traffic road parallel to the traffic road, and support beams are erected on each row of support piles on both sides. A large number of pipes are passed toward the support beam to form a pipe row that spans the entire length of the support beam under the traffic road surface, and while supporting the live load of the traffic road with this pipe row, it is placed adjacent to one of the outermost support piles. A pipe parallel construction method characterized by constructing an underground structure that crosses the traffic route between the supporting piles.