STRUCTURE OF ANCHORING PART FOR HEAD OF LOCK BOLT/ SCREWED-HEAD-TYPE TENSION MEMBER, HEAD ANCHORING METHOD, AND SHEATH

PROBLEM TO BE SOLVED: To surely hold a sheath and to prevent degradation of the sheath and a decrease in antirust effect, etc., which result from bending. SOLUTION: A spherical washer 26 which has at an opposite end to a nut 20 a partial spherical surface part 26a corresponding to the spherical rece...

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Bibliographic Details
Main Author FUKAI MASAYOSHI
Format Patent
LanguageEnglish
Published 24.08.1999
Edition6
Subjects
EARTH DRILLING
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
GALLERIES
HYDRAULIC ENGINEERING
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
SOIL SHIFTING
TUNNELS
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PROBLEM TO BE SOLVED: To surely hold a sheath and to prevent degradation of the sheath and a decrease in antirust effect, etc., which result from bending. SOLUTION: A spherical washer 26 which has at an opposite end to a nut 20 a partial spherical surface part 26a corresponding to the spherical recess part 20a of the nut 20 is placed around a lock bolt 16 between the nut and a joint plate 22, A sheath 24 wound around the lock bolt 16 while being passed through the joint plate 22 and a bearing plate 18 is molded to have in a predetermined part a flexible area 30 wherein at least a flange part thereof can be tilted from the axis of the base part thereof, and the sheath is held while a flange 24a at one end is sandwiched and fixed between the spherical washer 26 and the joint plate.
Bibliography:Application Number: JP19980051355