| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aseismatic pipe joint and its propulsion construction method capable of inserting a pipe and the joint in a condition ensuring a sufficient shrinkage amount which is the most important matter of aseismatic property regardless of a bore. SOLUTION: A plurality of propulsive force transmitting disk springs 3 arranged so as to stop a deflection amount to within a prescribed range even by receiving propulsive force are interposed between the external periphery of a spigot 1 of a connecting ductile cast iron pipe 10A and a side end face 21 of a socket 2 of the following pipe 10B, as mixing of sediment is prevented, the propulsive force is transmitted from the following pipe to the leading pipe by utilizing a spring constant, to press-in the pipe to be advanced together, even when all the pipes are loaded with excessive external force by an earthquake or the like by repeating connecting and pressing, by providing an annular space S in all joints of a pipe line after burying, needless to say, in a direction extracting the pipe also in a press-in direction, construction is executed by a procedure formed with the pipe line having aseismatic property of the highest level. Strength is changed by adjusting series/parallel arrangement of the disk spring interpolated corresponding to the propulsive force changed with a progress of construction, the pipe is propelled while maintaining always a fixed annular space in the joint.</p> |
