The dynamic response of fresh concrete filling pile under blasting load is studied by numerical sim- ulation in this paper.
采用数值模拟方法，对新浇混凝土灌注桩在爆破振动作用下的动态响应进行了分析。
The end of swelling normally corresponds to the point of concrete setting, at which the transformation of fresh concrete from liquid-like plastic state to solid state is complete.
通过考察新浇混凝土的凝结硬化过程,研究了普通混凝土与高强混凝土早龄期自由变形随龄期的发展规律,提出了确定混凝土凝结时间的新方法,与贯入阻力法测得的初凝和终凝时间进行了对比,并对混凝土早期变形特征进行了机理分析和讨论。
Through calculation of the distribution of vibration velocity and dynamic strain in the fresh placing concrete of foundation with theory of Rayleigh Wave and the dynamic FEM, and combined with the analysis of the strength development of young concrete, the safe velocity and its influencing factors of young concrete under loading of blasting vibration could be decided.
针对新浇筑混凝土的爆破震动控制,设法利用爆破地震波(Rayleigh波)作用下的新浇筑基础混凝土受力状态的理论分析和动力有限元计算,确定的新浇筑混凝土中的震动速度及动拉应变分布,并结合不同龄期下新浇筑混凝土的允许极限拉应变,从理论上确定新浇筑基础混凝土的安全震动速度及主要影响因素。
articulated chute
(浇混凝土用的) 活接卸槽
Application of the self-compacting concrete in the cast-in-situ concrete energy-saving wall
自密实混凝土在现浇混凝土节能墙体中的应用
Application of After-irrigation-strip Design and Construction in Super-long Cast-in-place Concrete Structure
后浇带在现浇混凝土超长结构中的应用
Preliminary discussion on causes of split in current pouring concrete anti-seismid wall structure
现浇混凝土抗震墙结构裂缝原因初探
THE TECHNOLOGY OF ASSEMBLED FIELD-CAST CONCRETE WALL WITHOUT DEMOULDING
拼装式现浇混凝土墙体免拆模板技术
Theory Calculation the Project Apply of Hollow Concrete Buikling Cover;
现浇混凝土空心楼板在工程中的应用
Experiment Research on Cast-in-Place Concrete Slab s Non-Loaded Cracks;
现浇混凝土楼板非荷载裂缝试验研究
The Formative Causes and Control Measures on Cracks in Cast-in-place Concrete Beams and Slabs;
现浇混凝土梁、板裂缝的成因和预防
Prevention and Control of the Crack on the Outside Wall of the Sprinkle Concrete Basement;
地下室现浇混凝土墙板的裂缝与防控
Analysis on Lining Crack of Cast-in-place Concrete in Channel and Its Prevention and Cure;
渠道现浇混凝土衬砌裂缝分析与防治
The Common Fault and the Prevention Measures of the Concrete Construction;
现浇混凝土施工质量通病及防治措施
feeding control case for depositing and mixing of concrete
混凝土浇灌给料控制箱
concrete placement systems & equipment
混凝土浇灌系统与设备
concreting boom
浇注混凝土起重机臂
cast-in-situ concrete construction
现浇钢筋混凝土施工
cast-in-site concrete technique
混凝土现浇施工技术
centrifugally cast pipe
离心浇灌钢筋混凝土管
A mold for the setting of concrete.
模板浇注混凝土的模板