Feasibility of using ultra-high ductility cementitious composites for concrete structures without steel rebar
Feasibility of using ultra-high ductility cementitious composites for concrete structures without steel rebar
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无钢筋混凝土结构使用超高延性水泥基复合材料的可行性
DOI：
10.1016/j.engstruct.2018.05.037
复制
发表时间：
2018-09
影响因子：
5.5
通讯作者：
Yichao Wang
中科院分区：
文献类型：
--
作者：
Kequan Yu;Lingzhi Li;Jiangtao Yu;Jianzhuang Xiao;Junhong Ye;Yichao Wang
为了验证超高延性水泥基复合材料(UHDCC)用于无筋建筑的可行性，从材料、构件和结构三个层面对UHDCC的力学性能进行了试验研究。超高密度混凝土的抗拉强度在5 ~20 之间，平均拉伸应变能力为8%，最大可达12%。四点弯曲试验表明，在配筋率为0.5%~1.5%的情况下，普通超高密度混凝土梁的承载能力与普通钢筋混凝土梁相当。在峰值荷载作用下，所有UHDCC平整梁的弯跨比均大于1/50。偏心受压试验表明，普通UHDCC柱的承载能力与含钢率为0.8%的RC柱接近。此外，还进行了钢筋混凝土框架(柱的配筋率约为2.0%)和普通UHDCC框架的振动台试验。超高密度混凝土框架结构经受住了3次地震，峰值地面加速度从0.105 g到1.178 g，在极强地震作用下表现出良好的层间位移控制能力。UHDCC框架的性能满足各种抗震规范的要求。本研究初步证实了非钢加固超高密度混凝土结构的可行性。
To verify the feasibility of using the ultra-high ductility cementitious composites (UHDCC) for construction without steel reinforcement, the mechanical properties of UHDCC was experimentally tested at material, structural member and structure levels. The tensile strength of UHDCC was from 5 MPa to 20 MPa, the average tensile strain capacity was 8% with the maximum value up to 12%. Four-point bending tests demonstrated that the plain UHDCC beams can match the loading capacity of conventional reinforced concrete beams with the steel reinforcement ratio of 0.5–1.5%. The deflection-span ratio of all the plain UHDCC beams exceeded 1/50 at the peak load. The eccentric compressive loading tests showed that the loading capacity of plain UHDCC column was close to that of RC column with a steel ratio of 0.8%. Additionally, shaking table tests were implemented on a RC frame (steel reinforcement ratios of columns were about 2.0%) and a plain UHDCC frame. The UHDCC frame survived 3 kinds of earthquakes with the peak ground acceleration from 0.105 g to 1.178 g, and exhibited excellent inter-story drift control under extremely strong earthquakes. The performance of the UHDCC frame fulfilled the requirements of various seismic codes. The feasibility of non-steel reinforced UHDCC structure was preliminarily confirmed by this study.
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DOI：
10.1115/1.3140679
发表时间：
1999-03
期刊：
--
影响因子：
--
作者：
G. Sabnis;H. G. Harris;Richard N. White;Saeed Mirza;R. Klingner
通讯作者：
G. Sabnis;H. G. Harris;Richard N. White;Saeed Mirza;R. Klingner
影响因子：
7.4
作者：
Foti, Dora
通讯作者：
Foti, Dora
影响因子：
7.4
作者：
Kequan Yu;Ling-zhi Li;Jiangtao Yu;Yichao Wang;Junhong Ye;Qingfeng Xu
通讯作者：
Kequan Yu;Ling-zhi Li;Jiangtao Yu;Yichao Wang;Junhong Ye;Qingfeng Xu
DOI：
10.2749/222137813806368343
发表时间：
2013-05
期刊：
--
影响因子：
--
作者：
Andrew W. Herrmann
通讯作者：
Andrew W. Herrmann
高温下工程水泥基复合材料的机械性能
影响因子：
3.2
作者：
Ke-Quan Yu;Jian-Guo Dai;Zhou-Dao Lu;Christopher K.Y. Leung
通讯作者：
Christopher K.Y. Leung