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A platform for research: civil engineering, architecture and urbanism
Large-span joist and brace column deflection control method
The invention discloses a large-span joist and brace column deflection control method. The control method breaks through a traditional construction method that strengthening is conducted firstly, andthen column breaking is conducted, the control method is achieved through the steps that column breaking is conducted firstly and then strengthening is conducted, through reverse loading, a certain number of invert arches are generated on an original floor beam, the beam is strengthened through a section enlarging method, active unloading is conducted, the new-old concrete stress hysteresis effectcan be effectively avoided, and integral stress of a strengthening body is ensured.
本发明公开了一种大跨度托梁抽柱挠度控制方法，该控制方法打破传统先加固，后断柱的施工方法，采用先断柱，后加固的步骤实现，通过反向加载，使原楼面梁产生一定量的反拱，然后用截面增大法加固该梁，主动卸荷，可有效避免新老混凝土应力滞后效应，确保加固体整体式受力。
Large-span joist and brace column deflection control method
The invention discloses a large-span joist and brace column deflection control method. The control method breaks through a traditional construction method that strengthening is conducted firstly, andthen column breaking is conducted, the control method is achieved through the steps that column breaking is conducted firstly and then strengthening is conducted, through reverse loading, a certain number of invert arches are generated on an original floor beam, the beam is strengthened through a section enlarging method, active unloading is conducted, the new-old concrete stress hysteresis effectcan be effectively avoided, and integral stress of a strengthening body is ensured.
本发明公开了一种大跨度托梁抽柱挠度控制方法，该控制方法打破传统先加固，后断柱的施工方法，采用先断柱，后加固的步骤实现，通过反向加载，使原楼面梁产生一定量的反拱，然后用截面增大法加固该梁，主动卸荷，可有效避免新老混凝土应力滞后效应，确保加固体整体式受力。
Large-span joist and brace column deflection control method
大跨度托梁抽柱挠度控制方法
ZHANG LINBO (author) / WANG QINGZHONG (author)
2020-09-11
Patent
Electronic Resource
Chinese
IPC:
E04G
SCAFFOLDING
,
Baugerüste
Joist and rafter spans for deflection
| Engineering Index Backfile | 1950
Floow Vibrations: Ultra-Long Span Joist Floors
| British Library Conference Proceedings | 1999