Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Research on Concrete Temperature Control and Crack Prevention for Pumping Station Complicated Structure
The water passageway structure of pumping station is both mass concrete structure and complicated structure. Cracks always appear in these areas during construction period. It will shorten the building life, and endanger the safety of pumping station. Three dimensional finite element method is adopted to simulate the temperature field and stress field of pump station in construction. The considering loads include gravity, temperature, autogenous volume deformation, and creep. The temperature and the first principle stress duration curves of easily cracking area are analyzed in different cases. After optimization of different temperature control measure, the tensile stress of different areas in early age or later age can be controlled lower than tension strength, and the cracking prevention safety factor can be raised. It is found that pipe cooling, surface insulation, pouring intermission, structure constrains can change the tensile stress obviously for pumping station. The influence of these factors is separately concluded.
Research on Concrete Temperature Control and Crack Prevention for Pumping Station Complicated Structure
The water passageway structure of pumping station is both mass concrete structure and complicated structure. Cracks always appear in these areas during construction period. It will shorten the building life, and endanger the safety of pumping station. Three dimensional finite element method is adopted to simulate the temperature field and stress field of pump station in construction. The considering loads include gravity, temperature, autogenous volume deformation, and creep. The temperature and the first principle stress duration curves of easily cracking area are analyzed in different cases. After optimization of different temperature control measure, the tensile stress of different areas in early age or later age can be controlled lower than tension strength, and the cracking prevention safety factor can be raised. It is found that pipe cooling, surface insulation, pouring intermission, structure constrains can change the tensile stress obviously for pumping station. The influence of these factors is separately concluded.
Research on Concrete Temperature Control and Crack Prevention for Pumping Station Complicated Structure
Zhang, Yang (Autor:in) / Qiang, Sheng (Autor:in) / Pan, Wei-Feng (Autor:in) / Dai, Jing-Qiu (Autor:in)
2012
4 Seiten
Aufsatz (Konferenz)
Englisch
| British Library Conference Proceedings | 2012
Research on Crack Prevention of Premixed Concrete of Pump Station Built in Summer
| British Library Conference Proceedings | 2015
Mass concrete temperature-control crack-prevention temperature-control curing device and method
| Europäisches Patentamt | 2023