JPH0379893A - Tube joint structure for water tube bridge - Google Patents

Abstract

PURPOSE:To lay a water tube bridge duct into arch shape by jointing the flange of the faucet of one pipe and the flange of the insertion port of the other pipe by a fastening member in such a way that both pipes are mutually inclined. CONSTITUTION:A faucet 14 and an insertion port 15 are provided at both ends of a pipe so as to form a tube joint structure 17. A flange 18 is provided at the end part of the faucet 14, and a stop ring 19 is fitted therein. The insertion port 15 is formed into cylindrical shape, and a flange 21 is rigidly secured in such a way as to be inclined in relation to an axis by an refractive angle thetaand jointed by a fastening member 22 such as a bolt, a nut, or the like. Pipes are thus jointed successively between two anchor blocks into arch shape. The burden force to vertical load therefore becomes extremely large, and the span of a water tube bridge duct becomes long.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a main pipe 41 conduit installation method and its pipe joint structure.

Conventional technology In the conventional aqueduct bridge pipeline construction method, multiple pipes are connected one after another by inserting the socket of one pipe into the socket of the other pipe, and only the two pipes at the center of the span are connected in a chevron shape. By bending and connecting the blocks, a chevron-shaped water pipe bridge was constructed between a pair of reed car blocks.

Problems to be Solved by the Invention However, according to the above-mentioned conventional construction method, since the aqueduct bridge to be constructed is mountain-shaped, there is a limit to the applicable span, and there is a problem that it cannot be applied to long spans.

The present invention aims to solve these problems by improving the conventional construction method.

Means for Solving the Problems In order to achieve the above object, the water pipe bridge pipe construction method of the present invention provides a water pipe bridge constructed between a pair of anchor blocks by sequentially connecting a plurality of pipes in an arch shape. In this method, the flange provided at the end of the socket of one pipe and the flange provided on the outer periphery of the socket of the other pipe are joined with a fastening member to connect both pipes with their pipe axes tilted to each other. It is structured as follows.

Effects According to the above configuration, both pipes can be connected by joining and joining both flanges, such as by providing the flange on the inlet side at an angle to the outer periphery of the inlet, or by inserting a wedge-shaped flange between both flanges. They can be connected to each other with their tube axes tilted.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. As shown in FIG. 1, a 7-channel water pipe 4!3 is installed between a pair of left and right anchor blocks 1 and 2 separated by a predetermined span S. First of all,
A buried pipe 4.5 is buried in each anchor block 1°2,
The socket 6 of the buried pipe 4.5 is made to protrude obliquely upward. This socket 6 can absorb the temperature expansion and contraction of the water pipe bridge 3 and the sinking of the anchor block 1°2. Next, a plurality of pipes 1!7 to 11 and 12 are sequentially connected in an arch shape between both buried pipes 4.5. To enable this connection, t7
A socket 13 and a socket 14 are provided at both ends of the pipes 8 to 1.
A socket 14 and an inlet 15 are provided at both ends of the pipe 12.
Inlet ports 13.15 are provided at both ends of the tube, forming two types of pipe joint structures 16.17. The pipe joint structure 16 connects the pipes 7, 12 to the buried pipe 4.5 in a straight line, and connects the simple cylindrical socket 13 (not shown) of the pipe 7.12 to the receiving part of the buried pipe 4.5. The connection is made by inserting it into the mouth 6. Further, the pipe joint structure 17 is such that, as shown in FIG. 2, the socket 15 of one pipe is inserted into the socket 14 of the other pipe at an angle θ. That is, the socket 14 has a flange 18 at its end, and a water stop ring 19 made of a material such as rubber or plastic is fitted around the inner periphery. 20
is an annular projection for fixing the water stop ring 19. The insertion port 15 is formed in a cylindrical shape, and a flange 21 is fixed to the outer periphery so as to be inclined by a bending angle θ with respect to the tube axis. Then, to connect pipes 7 to 12, pipe 7
By inserting the insertion port 15 of the tube 8 into the socket 14 at an angle of bending angle θ1, and joining both flanges 18.21 with a fastening member 22 such as a bolt or nut, both tubes 7.8 are connected to each other. Connect the shaft center by tilting the bending angle θ1, and bend the other pipes 9 to 12 in the same way to make the bending angle θ2 symmetrical.
．． θ3. They are connected one after another by tilting by θ1 (see Fig. 1). At this time, the water stop ring 19 tightens the outer periphery of the insertion port 15 to prevent water from leaking inside the pipe. An arched aqueduct 3 is thus constructed between the two anchor blocks 1.2.

As mentioned above, since the water pipe Ia3 has an arch shape, the vertical load bearing force due to the weight of the pipe and the water in the pipe is extremely large, and therefore, it is also applicable to the water pipe bridge 3 with a long span S. Further, even if the aqueduct bridge 3 is bent due to a vertical load, its aesthetic appearance will not be impaired.

In addition, in the pipe joint structure 17 shown in FIG. 2, the flange 21 is fixed to the outer periphery of the insertion port 15 by tilting the bending angle θ with respect to the pipe axis. As shown in the figure, a flange 21 may be fixed to the outer periphery of the socket 15 at right angles to the axis, and a wedge-shaped flange 23 may be inserted between both flanges 18.degree. 21.

As shown in FIGS. 4 and 5, this wedge-shaped flange 23 is formed so that both the front and back sides are inclined to each other by a bending angle θ. This structure has the advantage that the receptacle 15 is easier to manufacture than that shown in FIG.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, an arched aqueduct bridge can be constructed between a pair of anchor blocks.
The vertical load due to the weight of the pipe and the water inside the pipe is extremely large. Therefore, it is fully applicable to long-span water @Ia pipeline installation.

Furthermore, even if the aqueduct bridge bends due to vertical loads, its aesthetic appearance will not be affected because it is arched.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of an aqueduct bridge showing an embodiment of the present invention;
FIG. 2 is a sectional view showing an embodiment of the pipe joint structure of the present invention;
FIG. 3 is a sectional view showing another embodiment of the 1111 hand structure of the present invention, FIG. 4 is a front view of the wedge-shaped flange in FIG. It is. 1.2...Anchor block, 3...Aqueduct bridge, 7~
12... tube, 14... socket, 15... insertion port, 17
...Pipe joint structure, 18...Flange (socket side), 2
1...Flange (insertion side).

Claims (1)

[Claims] 1. In an aqueduct bridge built between a pair of anchor blocks by sequentially connecting multiple pipes in an arch shape, the flange provided at the end of the socket of one pipe and the outer periphery of the socket of the other pipe. A pipe joint structure for an aqueduct bridge, characterized in that both pipes are connected to each other with their pipe axes tilted by joining flanges provided in the pipes with a fastening member.