Research on early-warning index for deformation of integrated scaffoldingand formwork with steel platform based on risk management

doi:10.16265/j.cnki.issn 1003-3033.2021.06.007

Abstract

Abstract: In order to provide early-warning for possible instability and damage of integrated scaffolding and formwork with steel platform during construction of super high-rise buildings, structural deformation under most unfavorable conditions is adopted as core index to evaluate safety risk of the scaffolding and formwork, and determination methods for early-warning indicators of deformation are put forward. Firstly, based on systematic analysis on equipment composition, failure modes were analyzed for normal states and limit states, and classification method of failure risk level was put forward. Secondly, determination method for four-level deformation early-warning indices based on risk management was established considering deformation developing characteristics. Finally, case study on a typical integrated steel platform project was carried out. The results show that by determining risk level standards and risk value, establishing conditions for analysis models can be obtained and hence early-warning deformation indices be acquired. Moreover, the proposed method is verified to be scientific and feasible as it, based on analysis of failure paths and modes, can obtain values of early-warning indices through calculation of finite element models.

Key words: risk management, integrated scaffolding and formwork with steel platform, early-warning deformation index, super high-rise building, equipment structural failure

CLC Number:

X924.2

SHEN Yang, XU Lei, WANG Shaochun. Research on early-warning index for deformation of integrated scaffoldingand formwork with steel platform based on risk management[J]. China Safety Science Journal, 2021, 31(6): 56-63.

References

[1] E Yuting, ZHOU Li. The research on the current safety status of high-rise building at home and abroad[J]. Procedia Engineering, 2016, 135: 574-577.
[2] 张兵, 詹锐, 关贤军, 等. 基于CBR的超高层建筑施工安全事故研究[J]. 土木工程与管理学报, 2019, 36(6): 92-98.
ZHANG Bing, ZHAN Rui, GUAN Xianjun, et al. Research on construction safety accidents of super high-rise buildings based on CBR[J]. Journal of Civil Engineering and Management, 2019, 36(6): 92-98.
[3] 李宁宁, 张晓明, 何鲁清, 等. 武汉绿地中心狭窄空间超重钢平台关键施工技术[J]. 施工技术, 2019, 48(14): 105-107,138.
LI Ningning, ZHANG Xiaoming, HE Luqing, et al. Key construction technology of overweight steel platform in narrow space[J]. Construction Technology, 2019, 48(14): 105-107,138.
[4] 张丽梅, 杜守军, 刘卫然. 基于可拓理论的建筑施工安全管理系统研究[J]. 中国安全科学学报, 2011, 21(8): 138-144.
ZHANG Limei, DU Shoujun, LIU Weiran. Study on construction safety of management system based of extension theory[J]. China Safety Science Journal, 2011, 21(8): 138-144.
[5] 张伟, 朱双娜, 张潇, 等. 建筑施工安全事故致因系统模型与实证分析[J]. 中国安全科学学报, 2019, 29(6): 56-62.
ZHANG Wei, ZHU Shuangna, ZHANG Xiao, et al. Systematic model of construction accident causation and its empirical analysis[J]. China Safety Science Journal, 2019, 29(6): 56-62.
[6] 李皓燃, 李启明, 陆莹. 基于SEM的装配式建筑施工安全关键风险分析[J]. 中国安全科学学报, 2019, 29(4): 171-176.
LI Haoran, LI Qiming, LU Ying. Analysis of key safety risks in prefabricated building construction based on structural equation model[J]. China Safety Science Journal, 2019, 29(4): 171-176.
[7] 马辉, 吕航, 栾瑞斌. 基于空间单元分析的装配式建筑施工安全预警模型[J]. 中国安全科学学报, 2020, 30(5): 27-32.
MA Hui, LYU Hang, LUAN Ruibin. Safety early-warning model of prefabricated construction based on spatial cell analysis[J]. China Safety Science Journal, 2019, 29(5): 27-32.
[8] 赵一鸣. 整体钢平台模架装备的远程安全监控技术研究[J]. 建筑施工, 2019, 41(7): 1 292-1 294.
ZHAO Yiming. Research on remote safety monitoring technology for integral steel platform formwork equipment[J]. Building Construction, 2019, 41(7): 1 292-1 294.
[9] 左自波, 潘曦, 黄玉林, 等. 超高层ICCP安全监测与控制的预警指标研究[J]. 中国安全科学学报, 2020, 30(1): 53-60.
ZUO Zibo, PAN Xi, HUANG Yulin, et al.Early warning indicators for safety monitoring and control of super highrise ICCP[J]. China Safety Science Journal, 2020, 30(1): 53-60.
[10] 范峰, 王化杰, 金晓飞, 等. 超高层施工监测系统的研发与应用[J]. 建筑结构学报, 2011, 32(7): 50-59.
FAN Feng, WANG Huajie, JIN Xiaofei, et al. Development and application of construction monitoring system for super high-rise buildings[J]. Journal of Building Structures, 2011, 32(7): 50-59.
[11] LI Q S, LI Xiao, HE Yuncheng. Monitoring wind characteristics and structural performance of a supertall building during a landfall typhoon[J]. Journal of Structural Engineering, 2016, 142(11): 04016097.
[12] YUE F, YUAN Y, LI G Q, et al. Wind load on integral-lift scaffolds for tall building construction[J]. Journal of Structural Engineering, 2005, 131(5): 816-824.
[13] 周红波, 黄誉. 超高层建筑在极端台风气候下结构及施工安全风险分析及控制研究[J]. 土木工程学报, 2014, 47(7): 126-135.
ZHOU Hongbo, HUANG Yu. Study on construction safety risk control of highrise buildings in the extreme typhoon condition[J]. China Civil Engineering Journal, 2014, 47(7): 126-135.
[14] 吴水根, 高茁, 张铭, 等. 底部约束变化对搁置状态下整体爬升式钢平台安全性能的影响分析[J]. 建筑施工, 2020, 42(4): 640-644.
WU Shuigen, GAO Zhuo, ZHANG Ming, et al. Impact analysis of bottom restraint change on safety performance of integral climbing steel platform on hold[J]. Building Construction, 2020, 42(4): 640-644.
[15] JGJ 459—2019,整体爬升钢平台模架技术标准[S].
JGJ 459-2019,Technical standard for self-climbing integrated scaffolding and formwork equipment with steel platform[S].
[16] T/CECS 671—2020,超高层建筑施工安全风险评估与控制标准[S].
T/CECS 671-2020,Safety risk assessment and control standards for super high-rise buildings[S].
[17] 马静. 钢梁与筒架交替支撑式整体爬升钢平台模架在超高建筑复杂核心筒结构建造中的应用[J]. 建筑施工, 2019, 41(1): 109-112.
MA Jing. Application of steel beam and frame alternately supported integral climbing platform formwork in construction of ultra-high building complex core tube structure[J]. Building Construction, 2019, 41(1): 109-112.
[18] 李宗坤, 葛巍, 王娟, 等. 中国水库大坝风险标准与应用研究[J]. 水利学报, 2015, 46(5): 567-573,583.
LI Zongkun, GE Wei, WANG Juan, et al. Research on China's reservoir and dam risk standard and application [J]. Journal of Hydraulic Engineering, 2015, 46(5): 567-573,583.
[19] United States Bureau of Reclamation. Guidelines for achieving public protection in dam safety decision making[R], 2003.