• 検索結果がありません。

突起付H形鋼を用いた高耐震複合構造橋脚

N/A
N/A
Protected

Academic year: 2021

シェア "突起付H形鋼を用いた高耐震複合構造橋脚"

Copied!
7
0
0

読み込み中.... (全文を見る)

全文

(1)

川崎製鉄技報

KAWASAKI STEEL GIHO Vol.30 (1998) No.1

突起付H 形鋼を用いた高耐震複合構造橋脚

Earthquake-Proof Composite Bridge Column Using Deformed H-Shapes

大 久 保 浩 弥(Hiroya Okubo) 森 川 孝 義 (Takayoshi Morikawa) 岡 由 剛 (Yoshitake Oka) 要旨 : 橋脚の耐震性向上,橋脚施工の合理化といったニーズに答えうる工法として,突起付 H 形 鋼とプレキャスト埋設型枠を用いた鉄骨コンクリート複合構造橋脚(REED 工法)を提案 し,構造特性ならびに施工性を検証した。その結果,以下の諸点が明らかになった。(1) 梁 曲げせん断試験から,提案した構造が H 形鋼を断面積が等価な鉄筋に置換した RC 方式 で設計できる。(2) 提案した構造の最大ひび割れ幅は RC 構造に比べて小さい。(3) 水平交 番載荷実験から,提案した工法は在来工法に比べてじん性に富んだ挙動を示し,耐震性に 優れた構造である。(4) 実施工において提案した工法の工期縮減率および省人化率は,在来 工法との比較において,各々 64%,46% である。 Synopsis :

A proposed composite bridge column (REED method) has been developed with the aims of speedy construction, labor saving, and increase in resistance against earthquake. For the purpose of achieving these objects, the composite bridge column consists of precast forms, deformed H-shapes as an alternative material for reinforcing bars, and filled-in concrete. The present study has verified the mechanical characteristics and the construction conditions of the composite bridge column. As a result of the studies, the followings are confirmed: (1) The composite structure can be designed on the basis of RC method wherein deformed H-shapes are treated as equivalents for reinforcing bars. (2) The ductility (resistance against earthquake) of the composite structure is more excellent than that of a conventional reinforced structure. (3) The reduction ratios of the construction period and the labor force of the composite pier method, as compared with those of a conventional method, are 64% and 46%, respectively.

(c)JFE Steel Corporation, 2003

本文は次のページか ら閲覧できま す。

要約版

(2)
(3)
(4)
(5)
(6)
(7)

参照

関連したドキュメント

(In the sequel we shall restrict attention to homology groups arising from normalising partial isometries, this being appropriate for algebras with a regular maximal

It is suggested by our method that most of the quadratic algebras for all St¨ ackel equivalence classes of 3D second order quantum superintegrable systems on conformally flat

In particular, we consider the following four subgroups: the intersection of all tidy subgroups for H on G (in the case that H is flat); the intersection of all H -invariant

Next, we prove bounds for the dimensions of p-adic MLV-spaces in Section 3, assuming results in Section 4, and make a conjecture about a special element in the motivic Galois group

In contrast to the q-deformed vector space, where the ring of differential operators is unique up to an isomorphism, the general ring of h-deformed differential operators Diff h,σ

As a special case of that general result, we obtain new fractional inequalities involving fractional integrals and derivatives of Riemann-Liouville type1. Consequently, we get

Transirico, “Second order elliptic equations in weighted Sobolev spaces on unbounded domains,” Rendiconti della Accademia Nazionale delle Scienze detta dei XL.. Memorie di

Then it follows immediately from a suitable version of “Hensel’s Lemma” [cf., e.g., the argument of [4], Lemma 2.1] that S may be obtained, as the notation suggests, as the m A