Adhering to Opening and Innovation,Building A First-Class Yangzhou

Located in central Jiangsu Prov- ince,Yangzhou is situated north of the Yangtze River and south of the Huai River.The Beijing- Hangzhou Grand Canal runs down from the north,right through the center of Yangzhou,and continues due south.

OBD三维照明设计研究

随着国内三维设计的逐步推广,设计软件逐渐趋于完善,对电力三维设计要求更加严苛。同时,国际市场逐步扩大,工厂业主除了要求提供负荷计算书外,还需提供厂区和建筑物照度计算报告,以确定灯具布置的合理性。传统照明设计中依靠典型方案和经验值来进行灯具布置的方式难以符合业主对照度精细化设计的需求。本文详细介绍了采用Bentley软件Open Building Designer(简称OBD)进行三维照明设计的流程,根据现场实测验证其设计结果的准确性,并结合实际工程体现三维照明的设计优势。希望通过本篇文章形成高效一体的照明设计数字化解决方案,共同为工程数字化工作添砖加瓦。

Optimal design of building openings to reduce the risk of indoor respiratory epidemic infections

The design of indoor airflow environments can significantly reduce the risk of respiratory epidemic infections indoors.Some studies have successfully developed theoretical models for calculating the effect of airflow fields on infection rates.However,up until now,studies have primarily focused on simulating and calculating the distribution of viral infection rates in current building scenarios.Due to the lack of a direct influence model for the design parameters and infection rate calculation,the present studies lack a quantitative analysis of the design parameters.This paper investigates the building openings design approach in a medium-sized kindergarten in Germany,intending to explore passive-based design solutions to improve the building's ability to prevent the virus'spread.We calculate the infection rate distribution in space by CFD combined with the Wells-Riley model.And then,use the Grasshopper platform to build an optimization model with the design parameters of building openings and infection rate values to discuss the relationship between geometric parameters and infection rate variation.The results show that the building openings'design parameters in transition spaces significantly affect the indoor infection rate under the condition that the input wind speed at the building openings is stable.We can see that optimizing building openings significantly reduces the average infection rate in space.The infection rate in the area with the largest decrease can be reduced by 18.41%.The distribution of infection rate in space is much more uniform,and the excess area is significantly reduced.This study has implications for future research and practice in designing public buildings under the influence of long-standing and cyclical outbreaks of epidemics.

An efficient method of evaluating large scale urban residential skylight environment and an empirical study of Beijing main area

A good skylight environment in urban residential areas is an important component of a healthy city,and has always been highly valued.With the rapid development of new-type urbanization,the density of buildings continues to increase,and megacities have entered the stage of stock transformation.An effective method for evaluating the skylight environment of large-scale urban residential areas is urgently needed.However,there is still a lack of empirical research methods and cases of large-scale residential skylight environment.In this regard,this article takes the megacity Beijing as the research object,and proposes an efficient analysis method of residential skylight environment that integrates multiple real-world data at city scale.In terms of data,it collects and integrates 3D data of urban-scale building space and residential boundary data;in terms of algorithm,Sky View Factor(SVF)is used as the evaluation index of residential skylight environment,and an efficient analysis method of urban-scale skylight environment based on cloud parallel simulation is realized.Through analysis,it is found that:(1)the average SVF value of Beijing residential area is 61%,which means that its skylight quality is in general level;(2)the skylight environment of Beijing residential area is distributed in a circle,and there are 4 types of skylight environment quality residential areas;(3)The skylight environment of Beijing residential area is relatively weakly related to the distance from the residential area to the city center and the average height of the residential buildings,and is closely related to the plot volume ratio,the residential building density and the shading from surrounding buildings.The highlight of this study lies in the empirical research on the skylight environment of mega-city residential areas that incorporates multiple real data for the first time,which can promote the study of skylight environment on a city scale and provide a reference for the updating of Beijing’s residential daylight environment.