Development of PCaPC Top Slab Rigidly Jointed with Cast-in-place Side Wall

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  • ＰＣａＰＣ頂版と場所打ち側壁との結合工法の開発
  • PCaPCチョウバン ト バショウチ ソクヘキ ト ノ ケツゴウ コウホウ ノ カイハツ

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Abstract

This paper reports results of verified strengths on the socket-type rigid joint. This type of joint could offer rapid and high-quality construction at the tunnel section in the underpass, combining the top slab with side wall. The former is a pre-cast prestressed concrete(PCaPC)member and the latter is a cast-in-place reinforced concrete(RC)member. In construction of the joint,the vertical section of the top slab is inserted into the socket section of the side wall, and mortar is filled in the opening space. The inserted length is approximately 1.5 times the width of the vertical section. Failure behavior and strength of the rigid joint model are verified by a monotonous loading test and a repeaded loading test of two million cycles.

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