JPH0457597U

JPH0457597U -

Info

Publication number: JPH0457597U
Application number: JP9969490U
Authority: JP
Priority date: 1990-09-21
Filing date: 1990-09-21
Publication date: 1992-05-18

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案の一実施例を示す
図であつて、第１図は一方のセグメントの一部断
面正面図、第２図は一実施例の接合構造を示す平
面図、第３図はボルトの平面図、第４図はボルト
の締付け力の伝達経路を説明する図、第５図およ
び第６図は継手金具の他の配置例を示す正面図、
第７図および第８図はそれぞれ従来のセグメント
の継手構造を示す側断面図、第９図は別実施例の
第１および第２の継手金具の側断面図、第１０図
は別実施例のボルトの側面図である。１１，１３……セグメント本体、１１ａ，１３
ａ……接合端面、１２，３０……第１の継手金具
、１２ａ，３０ａ……雌ねじ、１４，３１……第
２の継手金具、１４ｂ……段部（係止部）、１５
，１８，２１，２４……アンカー筋、１６，３３
……ボルト、１６ａ，３３ａ……ボルト頭部、１
９……ボルト締結用凹所、３１ｃ……開口端面（
係止部）、Ａ，Ｂ……セグメント。 1 to 4 are views showing one embodiment of the present invention, in which FIG. 1 is a partially sectional front view of one segment, and FIG. 2 is a plan view showing a joint structure of one embodiment. FIG. 3 is a plan view of the bolt, FIG. 4 is a diagram illustrating the transmission path of the tightening force of the bolt, and FIGS. 5 and 6 are front views showing other examples of the arrangement of the joint fittings.
7 and 8 are side sectional views showing a conventional segment joint structure, FIG. 9 is a side sectional view of first and second joint fittings of another embodiment, and FIG. 10 is a side sectional view of another embodiment. It is a side view of a bolt. 11, 13... Segment body, 11a, 13
a... Joint end surface, 12, 30... First joint fitting, 12a, 30a... Female thread, 14, 31... Second fitting fitting, 14b... Step part (locking part), 15
, 18, 21, 24... Anchor muscle, 16, 33
...Bolt, 16a, 33a...Bolt head, 1
9... Recess for bolt fastening, 31c... Opening end surface (
(locking part), A, B...segments.

Claims

[Scope of utility model registration request]

With the joining end surfaces of the segment bodies in a pair of segments to be joined aligned with each other, a cylindrical first tube is placed at the joining end of one segment body and the joining end of the other segment so that the inside thereof communicates with each other. and a second joint fitting are buried coaxially with each other, anchor bars extending inward of the segment main body substantially parallel to the axis thereof are respectively fixed to the first and second fitting fittings, and A female thread is formed on the inner circumferential surface of the fitting, the second fitting is provided with a locking portion for a bolt head, and the second fitting is further embedded in the other segment body. A bolt fastening recess is formed that communicates the inside of the second fitting and the outside of the segment main body, and the bolt inserted into the first and second fittings from this bolt fastening recess is inserted into the first and second fittings. With the bolt head locked in the head locking part of the second fitting,
A segment joint structure characterized in that the segment is screwed into and fastened to the female thread of the joint fitting.