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A new type bioretention facility that called as bioretention parterre was proposed to treat the stormwater of the siphonic drainage system in the Changzhen Depot of Shenzhen Metro. The connection point of the siphonic downspout and the inlet of bioretention parterre was calculated by corresponding calculation formula. The energy dissipation well and the outlet well are set at two sides of the bioretention parterre respectively. The outflow control device is set up in the outlet well to regulate the discharge. The innovative bioretention parterre provides new thought for sponge city construction of urban rail transit.

The sponge city facilities in Changzhen Depot of the Shenzhen Metro Line 6 were laid out in consideration of the depot characteristics, geological and hydrological conditions of the project site, construction period and national and local sponge city construction requirements. Some innovative sponge facilities such as ecoroof, biological wastewater treatment system, bioretention parterre, multipurpose detention pond, Bioretention belt and environment-friendly gully were designed to treat the stormwater of Changzhen Depot and part of the reclaimed water of the Changzhen wastewater treatment plant. The scales and capacities of the sponge city facilities were determined by volumetric method. The demonstration project of sponge city in Changzhen Depot is the first low impact development urban rail transit project in the world. The sponge city design philosophy in Changzhen Depot is beneficial to the construction of green urban rail transit in Shenzhen, even in the whole of China.

During the period of COVID-19, the number of residents infected in urban communities continued to rise, implying that most of the current building layouts can't effectively resist the spread of infectious diseases, and the outbreak of COVID-19 has led to the need of changes for the current building environment. Therefore, the epidemic prevention should be considered in the residential building design, and the health design of residential community should be carried out from the perspective of epidemic prevention. In order to improve the ability of epidemic prevention of residential buildings and deal with the sudden pandemic and influenza in the post-epidemic era, a Healthy Assessment System for Residential Building Epidemic Prevention (HASRBEP) was developed according to the epidemic impact on residential buildings, the design and measures of epidemic prevention for residential buildings and the Chinese Assessment standard for healthy building (T/ASC 02–2016). Both entropy weight method and expert scoring method were used to determine the specific weight of the index. The HASRBEP includes control item assessment, preliminary assessment and extension assessment. The newly developed HASRBEP was used to assess the residential buildings of the Yulongzhuang Building Community located in Quanzhou, Fujian Province, China. The results show that the HASRBEP can be used to guide the health and epidemic prevention design of residential buildings.

Large volumes of construction waste have been produced with the rapid development of subway projects in Shenzhen, China. To solve the problems of difficult storage and low resource utilization of the subway construction waste, Shenzhen government has required the contractors to reduce the subway construction waste by onsite and offsite treatment processes since May 2019. This study introduces an offsite treatment process of the subway construction waste in Shenzhen. Some improvement measures such as replacing drum-type sand screening and settling tanks with centrifugal solid-liquid separation equipment and inclined plate sedimentation equipment are proposed to recycle fine sand and heighten treatment efficiency.