Risk-Based Evacuation Model for Steel Platform Formwork in Skyscraper Construction and Its Application

doi:10.16183/j.cnki.jsjtu.2020.251

Abstract

Abstract:

Integral steel platform formwork is widely used in the construction of super high-rise buildings, which brings a high degree of risk uncertainty to construction personnel. Therefore, it is crucial and necessary to establish a risk-based evacuation model for steel platform formwork in skyscraper construction. First, the spatial distribution of hazards sources on the steel platform is considered, hazardous areas are defined, and expert data are collected through survey questionnaires to assess the joint risk probability. Next, the joint risk probability of hazardous areas is coupled into the evacuation process based on the cellular automaton floor field model, and the evacuation process of construction personnel on the steel platform is simulated. Finally, the proposed risk-based evacuation simulation model is applied to an actual construction project. The results show that the influence of the top and lower hazardous areas on the evacuation process is significantly affected by the size of the exit. The model provides a new paradigm for experience-oriented construction safety management, with a theoretical and application value for the maintenance of the integral steel platform formwork system.

Key words: super high-rise building construction, integral steel platform formwork, hazardous area, risk probability, evacuation

CLC Number:

TU974
X947

HUA Ying, HE Jun, ZHAO Jincheng, ZOU Jiexin, ZHANG Jingjing, RUAN Shipeng. Risk-Based Evacuation Model for Steel Platform Formwork in Skyscraper Construction and Its Application[J]. Journal of Shanghai Jiao Tong University, 2021, 55(11): 1380-1391.

Figures/Tables 11

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危险区域	危险区域名称	μ_ln_D	σ_ln_D	max ln D
HA1	塔吊作业区	1.652	1.555	8.294
HA2	焊接加工区	1.319	1.531	5.598
HA3	物料堆放区	1.642	1.531	5.529
HA4	平台未铺板区	1.865	1.539	4.836
HA5	临时用电区	1.479	1.315	6.292
HA6	平台临边区	1.614	1.526	4.836
HA7	楼梯运动区	1.150	1.433	4.094
HA8	走道堆物区	1.360	1.443	5.193
HA9	核心筒施工区	1.126	1.506	4.836

i	ρ'_ij
i	j=1	j=2	j=3	j=4	j=5	j=6	j=7	j=8	j=9
1	1.000	0.513	0.349	0.365	0.433	0.267	0.284	0.370	0.555
2	0.513	1.000	0.466	0.405	0.684	0.348	0.254	0.406	0.433
3	0.349	0.466	1.000	0.488	0.430	0.478	0.498	0.585	0.380
4	0.365	0.405	0.488	1.000	0.362	0.472	0.455	0.409	0.376
5	0.433	0.684	0.430	0.362	1.000	0.291	0.187	0.360	0.419
6	0.267	0.348	0.478	0.472	0.291	1.000	0.599	0.241	0.274
7	0.284	0.254	0.498	0.455	0.187	0.599	1.000	0.256	0.289
8	0.370	0.406	0.585	0.409	0.360	0.241	0.256	1.000	0.345
9	0.555	0.433	0.380	0.376	0.419	0.274	0.289	0.345	1.000

主风险区	P_HA1	P_HA2	P_HA3	P_HA4	P_HA5	P_HA6	P_HA7	P_HA8	P_HA9
HA1	1.000	0.406	0.294	0.285	0.301	0.193	0.195	0.252	0.398
HA2	0.245	0.980	0.257	0.211	0.310	0.172	0.137	0.191	0.209
HA3	0.166	0.221	0.961	0.228	0.190	0.203	0.202	0.239	0.175
HA4	0.143	0.160	0.192	0.845	0.140	0.164	0.156	0.149	0.144
HA5	0.269	0.466	0.311	0.243	0.999	0.183	0.134	0.216	0.258
HA6	0.126	0.153	0.203	0.189	0.130	0.892	0.202	0.117	0.127
HA7	0.128	0.125	0.206	0.180	0.106	0.205	0.878	0.119	0.129
HA8	0.179	0.204	0.308	0.204	0.172	0.132	0.134	0.971	0.169
HA9	0.235	0.202	0.191	0.179	0.182	0.136	0.137	0.156	0.952