Plate Load Tests on Municipal Solid Waste Dump Site to Assess Ground Improvement Alternatives

Urbanization is the physical growth of urban areas as a result of global change. As the land cost is increasing tremendously and decreasing availability of good construction site is building up pressure on the engineers to utilize even the poorest site either by providing special type of foundation or by improving ground in urban centres. In this context literature is reviewed for use of landfill site for housing. The site exploration for old dump site was carried out to assess subsoil characteristics. The objective was to evolve strategy for economical feasible ground improvement technique to obtain permissible bearing capacity of 150 kPa and total settlement not more than 50 mm. The tests carried out are load tests with geotextile mat and stone filled wire mess matress. The analysis was attempted to evaluate the soil response and bearing capacity. The site can be used for construction of low rise housing for rehabilitation of displaced persons under TP scheme within city area utilizing old landfill sites.

某特大类垃圾焚烧发电厂结构设计

以具体工程为实例介绍了特大类垃圾焚烧发电厂结构设计中常遇到的问题:结构选型和计算软件选用、超长结构抗裂设计、垃圾荷载计算、垃圾池抗震设计及耐久性设计、地基基础设计、卸料大厅楼板等效均布荷载计算、超长结构温度荷载分析及设计等,对比了炉前平台分别采用刚性板和弹性板时结构的受力和变形,给出了设计建议:主厂房结构形式应综合分析后确定;狭长楼板作为垃圾池壁水平支撑时,应选用弹性楼板计算;应采用多种手段减小温度应力和提高结构构件抗力。

某垃圾焚烧发电厂的位移计算分析

介绍了垃圾焚烧发电厂设计时在位移控制方面所面临的问题。以某垃圾焚烧处理项目进行位移计算分析。根据结构上各种荷载的特点,简化设计了几种工况,包含吊车和温度作用以及平面框排架分析。对比了各种工况下的位移及杆端位移比,总结了结构在各种荷载下主要位移特点,并对某些部位位移反应大的情况给出了设计建议。

垃圾焚烧厂垃圾池池底竖向压力和垃圾重度的取值研究

针对我国目前生活垃圾焚烧厂垃圾池设计荷载取值不明确的问题,根据垃圾池内垃圾的堆积方式和结构的防腐要求,设计了垃圾池荷载的监测方案。在湖南某生活垃圾焚烧厂垃圾池内布置测点,对垃圾池内底板竖向压力和垃圾堆高进行监测,获得了相应的实测数据。采用概率统计方法对垃圾池在不同垃圾堆高下的池底竖向压力、垃圾平均堆积重度和分层重度进行了统计分析,提出了垃圾焚烧厂垃圾分层重度的取值建议方案。研究成果可为生活垃圾焚烧厂房垃圾池结构的设计提供基础资料和技术支持。