Research on Spatial Arrangement of Metro Station Floor Facilities Based on Pathfinder
Shouguo Yang,
Jia Jin,
Xuefu Lu
Issue:
Volume 7, Issue 6, November 2019
Pages:
147-151
Received:
15 November 2019
Published:
9 December 2019
Abstract: The process of China's large-scale urbanization is constantly advancing, and public transportation problems are increasingly prominent. In recent years, major cities have been building subways. The advantages of the subway, such as fast and low carbon, have become an important means for large cities to solve urban public transportation. With the development of urban subway construction technology and operation scale and the continuous improvement of people's safety concept, the problem of evacuation of people in emergencies such as fires has increasingly aroused people's understanding. In order to explore the influence of the location of the facility space on the station floor to the evacuation of people in the event of an emergency, this paper optimizes the analysis of the traffic facilities such as the automatic ticket gate and the guide railing in the public area of the subway based on the pathfinder evacuation software. The location of the facility space at the station floor of the subsequent construction has been actively assisted. The simulation results show that the opening of the guide rail at the gate and the entrance and exit of the security inspection has a restraining effect on the evacuation of personnel; the spatial arrangement of the subway gate has a significant impact on the evacuation of personnel, and the layout of the distributed gates is not correct. The personnel at the exit of the escalator caused blockages, which was better than the centralized arrangement.
Abstract: The process of China's large-scale urbanization is constantly advancing, and public transportation problems are increasingly prominent. In recent years, major cities have been building subways. The advantages of the subway, such as fast and low carbon, have become an important means for large cities to solve urban public transportation. With the de...
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Determination of Grouped Piles’ Effective Length Based on Numerical Analysis Solution
Zhongkun Zhang,
Linlin Wang,
Xueyang Xing
Issue:
Volume 7, Issue 6, November 2019
Pages:
152-156
Received:
3 November 2019
Published:
26 December 2019
Abstract: In recent years, there has been an increasing amount of literature on pile’s effective length. A number of studies have found that the single pile’s effective length could be computed by means of different methods which are unsuitable for grouped piles’ computation. In order to understand how the effective length of piles should be calculated, a series of studies was performed in this paper. On the basis of numerical analysis for grouped piles foundation, the computed results indicate the existence of piles’ effective length. Taking an engineering example as a case, both the finite element analysis and the semi-analytical element analysis are used for analyzing. It is revealed that the influencing factors of grouped piles’ effective length are as follows: the pile-soil modulus ratio, top load distribution area, pile diameter, etc. The grouped piles’ effective length increases gradually with the increasing top load distribution area. Although it is difficult to use an appropriate formula to reflect the influence of various factors on the grouped piles length, different various factors can be considered in the numerical simulation analysis. The influencing factors on the grouped piles’ effective length should be considered synthetically. An example of highway in-situ study makes the grouped piles’ effective length be understood deeply both in theory and practice.
Abstract: In recent years, there has been an increasing amount of literature on pile’s effective length. A number of studies have found that the single pile’s effective length could be computed by means of different methods which are unsuitable for grouped piles’ computation. In order to understand how the effective length of piles should be calculated, a se...
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