JPH025497U

JPH025497U -

Info

Publication number: JPH025497U
Application number: JP8040088U
Authority: JP
Priority date: 1988-06-17
Filing date: 1988-06-17
Publication date: 1990-01-16

Description

[Brief explanation of drawings]

第１図ないし第５図はこの考案の実施例を示す
図であつて、第１図は充填材注入専用のセグメン
トのグラウトホールの構造を示す断面図、第２図
はエレクター取り付け兼用のセグメントのグラウ
トホールの構造を示す断面図であり、第３図ない
し第５図はグラウトホールに使用される栓体係止
部を示す上面図である。第６図、第７図は従来例
を示す図であつて、第６図は充填材注入専用のセ
グメントのグラウトホールの構造を示す断面図、
第７図はエレクター取り付け兼用のセグメントの
グラウトホールの構造を示す断面図である。また
、第８図はセグメントのグラウトホールを密閉す
るために用いられる栓体の一例を示す断面図であ
る。１２……グラウトホール、１３……孔、１３ａ
……周壁、１４……栓体係止部、１５……（栓体
係止部の）内周面、１７……（栓体係止部の）め
ねじ部、１６……外周面、１４ａ……凸部、１４
ｂ……凹部、１８……グラウトホール、１９……
鋼管、２０……（鋼管の）内周面、２１……（鋼
管の）めねじ部、２３……緩衝材（Ｏリング）。 Figures 1 to 5 are diagrams showing an embodiment of this invention, in which Figure 1 is a cross-sectional view showing the structure of a grout hole in a segment dedicated to filling material injection, and Figure 2 is a cross-sectional view of a segment that also serves as an erector attachment. It is a sectional view showing the structure of a grout hole, and FIGS. 3 to 5 are top views showing a stopper locking part used in the grout hole. 6 and 7 are diagrams showing a conventional example, and FIG. 6 is a sectional view showing the structure of a grout hole of a segment dedicated to filling material injection;
FIG. 7 is a sectional view showing the structure of a grout hole in a segment that also serves as an erector attachment. Moreover, FIG. 8 is a sectional view showing an example of a plug used for sealing a grout hole of a segment. 12... grout hole, 13... hole, 13a
... Peripheral wall, 14... Plug locking part, 15... Inner circumferential surface (of the plug locking part), 17... Female threaded part (of the plug locking part), 16... Outer circumferential surface, 14a ...Protrusion, 14
b... recess, 18... grout hole, 19...
Steel pipe, 20...Inner peripheral surface (of the steel pipe), 21...Female thread portion (of the steel pipe), 23...Buffer material (O ring).

Claims

[Claims for Utility Model Registration] (1) In the structure of the grout hole of the segment, which is used to inject filler between the ground and the segment after the segment is assembled into a cylindrical shape, the hole penetrates in the wall thickness direction of the segment. A cylindrical plug locking portion made of ceramic is embedded coaxially with the hole in the peripheral wall at one end into which the filler is injected into the hole. A female threaded portion is carved on the surface, a convex portion or a concave portion for preventing rotation of the stopper locking portion is formed on the outer circumferential surface, and the outer circumferential surface is formed in a thin tapered shape on the side where the filler is injected. A grout hole structure of a segment, characterized in that the grout hole is constituted by the inner circumferential surface of the stopper locking part and the above-mentioned hole. (2) In the structure of the grout hole of the segment according to claim 1, the inner diameter of the hole is smaller than the inner diameter of the plug locking portion, and a female thread is provided on the inner circumferential surface of the hole adjacent to the plug locking portion. A structure of a segment grout hole characterized in that a steel pipe with a carved part is buried coaxially with the hole, and a buffer material is interposed between the stopper locking part and the steel pipe.