JPH02148098U

JPH02148098U -

Info

Publication number: JPH02148098U
Application number: JP5711589U
Authority: JP
Priority date: 1989-05-19
Filing date: 1989-05-19
Publication date: 1990-12-17

Description

[Brief explanation of drawings]

第１図は本考案に係るコンクリートセグメント
を示す傾斜図、第２ａ図は保護ネツトを示す正面
図、第２ｂ図は該保護ネツトの側面図、第３図は
コンクリートセグメントの型枠と保護ネツトの取
付け位置を示す斜視図、第４図は型枠の縁に、保
護ネツトを載置した状態を示す一部拡大斜視図、
第５図は型枠にコンクリートを打設した状態を示
す斜視図、第６図は打設したコンクリート面側に
保護ネツトを折り曲げた状態を示す一部拡大斜視
図、第７図はコンクリートセグメントの組立て状
態を示す平面図、第８図はコンクリートセグメン
トを組立てて構築したトンネル覆工体を示す概略
斜視図、第９図は従来のコンクリートセグメント
を用いた覆工状態を示す径方向の概略断面図であ
る。１……コンクリートセグメント、２……短辺側
、３……長辺側、４……背面側、９……鋭角コー
ナー部、１０……保護ネツト。 Fig. 1 is an inclined view showing a concrete segment according to the present invention, Fig. 2a is a front view showing a protective net, Fig. 2b is a side view of the protective net, and Fig. 3 is a diagram showing the formwork of the concrete segment and the protective net. A perspective view showing the mounting position; FIG. 4 is a partially enlarged perspective view showing the protective net placed on the edge of the form;
Figure 5 is a perspective view showing the state in which concrete is poured into the formwork, Figure 6 is a partially enlarged perspective view showing the state in which the protective net is bent to the side of the poured concrete, and Figure 7 is a perspective view of the concrete segment. Fig. 8 is a schematic perspective view showing a tunnel lining constructed by assembling concrete segments, and Fig. 9 is a schematic radial cross-sectional view showing a lining using conventional concrete segments. It is. 1... Concrete segment, 2... Short side, 3... Long side, 4... Back side, 9... Acute corner portion, 10... Protection net.

Claims

[Scope of Claim for Utility Model Registration] 1. A segment consisting of an opposing main girder section, a joint section, and a thick lining section surrounded by these, and the length of the opposing main girder section in the circumferential direction of the tunnel. The other end is made shorter than one end in the tunnel axis direction to form a long side and a short side, respectively, and the opposing joint portions are made into gradually narrower slopes from one end to the other end in the tunnel axis direction, so that the overall shape is improved. A concrete segment characterized by having a wedge-shaped trapezoid. 2. The concrete segment according to claim 1, wherein a net-like protection member is provided at an acute corner portion surrounded by the long side of the main girder portion, the joint portion, and the thick lining portion. 3. The concrete segment according to claim 2, wherein a net-like protection member is provided on the back side of the thick lining portion.