Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-area cast-in-place construction method for UHPC structure
The invention provides a large-area cast-in-place construction method for a UHPC structure. The large-area cast-in-place construction method comprises the steps that formworks, reinforcing steel bars and stirring concrete are prepared; the surface saturated vapor pressure, the air vapor pressure and the wind speed of the UHPC are monitored on site in real time, the surface water loss of the UHPC structure at different forming time is calculated, a water loss time-history curve is drawn and written into a programmable logic controller, and then real-time intelligent automatic water replenishing is conducted on concrete pouring; concrete curing is conducted, specifically, a steam curing shed is arranged firstly, and the concrete curing process comprises the steam curing process of monitoring the curing temperature and the relative humidity in the shed on site in real time. According to the UHPC component prepared by the method, the problem that the performance of the component is reduced due to the fact that the UHPC surface loses water in the pouring process and the temperature and humidity cannot be well controlled in real time in the steam curing process can be completely avoided, and the UHPC component prepared by the method is excellent in apparent quality and high in structural performance.
本发明提供一种UHPC结构大面积现浇施工方法，包括：准备模板、钢筋和搅拌混凝土；混凝土浇筑：先现场实时监测UHPC表面饱和蒸汽压、空气蒸汽压和风速，计算出不同成型时间时UHPC结构的表面失水量，绘制出失水时程曲线，将失水时程曲线写入可编程逻辑控制器，再对混凝土浇筑进行实时智能自动补水；混凝土养护：先设置蒸养棚，且混凝土养护过程中包含现场实时监控棚内的养护温度和相对湿度的蒸汽养护过程。使用本发明所述方法制备的UHPC构件能够完全避免浇筑过程中UHPC表面失水和蒸养过程中未能实时控制好温度和湿度而导致的构件性能下降的问题，使用本发明所述方法制备的UHPC构件表观质量优异，且构件的结构性能强。
Large-area cast-in-place construction method for UHPC structure
The invention provides a large-area cast-in-place construction method for a UHPC structure. The large-area cast-in-place construction method comprises the steps that formworks, reinforcing steel bars and stirring concrete are prepared; the surface saturated vapor pressure, the air vapor pressure and the wind speed of the UHPC are monitored on site in real time, the surface water loss of the UHPC structure at different forming time is calculated, a water loss time-history curve is drawn and written into a programmable logic controller, and then real-time intelligent automatic water replenishing is conducted on concrete pouring; concrete curing is conducted, specifically, a steam curing shed is arranged firstly, and the concrete curing process comprises the steam curing process of monitoring the curing temperature and the relative humidity in the shed on site in real time. According to the UHPC component prepared by the method, the problem that the performance of the component is reduced due to the fact that the UHPC surface loses water in the pouring process and the temperature and humidity cannot be well controlled in real time in the steam curing process can be completely avoided, and the UHPC component prepared by the method is excellent in apparent quality and high in structural performance.
本发明提供一种UHPC结构大面积现浇施工方法，包括：准备模板、钢筋和搅拌混凝土；混凝土浇筑：先现场实时监测UHPC表面饱和蒸汽压、空气蒸汽压和风速，计算出不同成型时间时UHPC结构的表面失水量，绘制出失水时程曲线，将失水时程曲线写入可编程逻辑控制器，再对混凝土浇筑进行实时智能自动补水；混凝土养护：先设置蒸养棚，且混凝土养护过程中包含现场实时监控棚内的养护温度和相对湿度的蒸汽养护过程。使用本发明所述方法制备的UHPC构件能够完全避免浇筑过程中UHPC表面失水和蒸养过程中未能实时控制好温度和湿度而导致的构件性能下降的问题，使用本发明所述方法制备的UHPC构件表观质量优异，且构件的结构性能强。
Large-area cast-in-place construction method for UHPC structure
一种UHPC结构大面积现浇施工方法
WU JIANHAI (Autor:in) / YANG JIAN (Autor:in) / PENG DANG (Autor:in) / OUYANG GUORONG (Autor:in) / ZENG ZIMIN (Autor:in) / WAN WENZHENG (Autor:in) / LIU SHASHA (Autor:in) / CHEN MING (Autor:in) / WANG GE (Autor:in)
31.01.2023
Patent
Elektronische Ressource
Chinesisch
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