Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/13097
標題: 低水泥量高性能混凝土無剪力筋樑之抗剪行為
Shear Behavior of Low cement High-Performance Concrete Beams Without Stirrups
作者: 劉倉豪
Liu, Ts''Hao, ang
關鍵字: Shear;剪力;Low cement;Beams without stirrups;High-performance concrete;低水泥量;無剪力筋樑;高性能混凝土
出版社: 土木工程學系
摘要: 
本研究主要探討高性能混凝土(HPC)樑構件及低水泥量高性能混凝土(
LcHPC)樑構件的抗剪行為,研究上共製作14根不含剪力筋的樑試體進行試
驗。考慮的實驗變數包括跨深比、鋼筋比及不同水泥含量等三項。研究結
果顯示,HPC樑構件與LcHPC樑構件的剪力強度,都隨剪跨比值減小及鋼筋
比值增加而提高強度。LcHPC樑構件在跨深比等於3.0時,其抗剪 行為與
HPC樑構件並無明顯的差異﹔但在跨深比減少為1.5 時,LcHPC樑達破壞之
極限剪力強度則較HPC樑為高,同時,LcHPC樑控制裂縫之表現也比HPC樑
優良。因此將LcHPC應用於灌製大型混凝土樑構件,應是可行且較具優點
。至於對HPC樑與LcHPC樑的剪度預測,現有的多數經驗預測公式皆有低估
其抗剪能力之傾向。

The purpose of the study is to investigate the shear
behavior of high performance concrete (HPC) beam and the low
cement high performance concrete (LcHPC) beam with a cement
content of 250 kg/cm3. Fourteen full scale specimens without
stirrups were made for testing. The considered parameters
include the shear-span to effective depth ratio (a/d), the
percentage of longitudinal steel content (ρ) and the different
amount of cement. The results show that the shear strength at
cracking increase as a/d decrease and as ρ increase for both
HPC beams and LcHPC beams. It happens to the shear strength at
failure, too. And there is no obvious differences of shear
behavior between HPC beams and LcHPC beams when a/d equals to
3.0. When the a/d equals to 1.5, LcHPC beams will have larger
shear strength than that of HPC beams at failure. Moreover, the
LcHPC beams also show better crack control than the HPC beams.
URI: http://hdl.handle.net/11455/13097
Appears in Collections:土木工程學系所

Show full item record
 

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.