The temperature field distribution of thin-walled reinforced concrete column with T-shaped cross section exposed to fire was analyzed using ANSYS-based APDL technology. The distributing feature of the seriously damaged region is closely related to the ignition time,the way of ignition and the areas exposed to fire. The most seriously damaged region goes hand in hand with the three surface of the column exposed to fire. Thin-walled reinforced concrete column with T-shaped cross section has poor fire resistance performance,thus the fire protection measures should be taken in the practical engineering. Temperature difference along the thickness of thin-walled reinforced concrete column with T-shaped cross section exhibit the nonlinear trend,with the surface exposed to the fire rapidly incremental. Since the distribution of the fire location is symmetrical,the distribution of temperature also exhibits symmetrical feature. The research results lay the basis for further development of the strength performance of thin-walled reinforced concrete column with T-shaped cross section exposed to fire.

Slip is a core equipment of snubbing device.The downhole operation with pressure requires that the slips can fast,reliably clamp and release the string in weight pipe or light pipe situation.To meet the requirement of snubbing operation to slip,a new automatic slip structure was developed.The structure and working principle of the new automatic slip were presented in detail.The upper and lower two slip components were symmetrically installed in new automatic slip and adopting hydraulic cylinder power achieve automatically clamp and release the string.The new automatic slip unit has the advantages of fast tripping the string and high operation efficiency.The uniform power formula of slip insert was derived by establishing slip mechanical model and stress analysis of slip.Based on the mechanical analysis model of slip used in U.S.API the engineering practical algorithms,the calculation formula of slip height was obtained,and it provided a theoretical basis for further design of a reliable automatic slip of snubbing.

External wall insulation system,namely cast-in-situ concrete polystyrene board in high-rise shear wall residential projects,was taken as the research subject.In consideration of polystyrene board with three different thicknesses,thermal-structure coupling effect of extreme high temperature and rainstorm on cast-in-situ concrete polystyrene board was analyzed via the APDL parametric model and the numerical methods.The result shows that polystyrene board has great insulation performance,which means that both sides of polystyrene board have large temperature difference.However,with the increment of the thickness of polystyrene board,the large temperature difference would continuously increase with lower amplitude.The polystyrene board exhibits significant deformation under large temperature change,therefore both sides of the polystyrene board interface is liable to crack.One of the most vulnerable areas,namely around opening in a wall,gives us concerns and should be strengthened.

Considering insulation materials of the existing building's exterior wall system based on the practical working experience,fire risks of the insulation system and the factors influencing fire safety coefficient are analyzed.Some details of constructions to improve the performance of insulation systems are presented,including the fire barrier,the block firewall,the fire sub-compartment,full bonding practices,increasing the protective layer thickness.The fire rating and the trends of development are proposed.

利用CAN总线集成性高、扩展性强的特点,简化了试油数据测试系统现场布线,使系统具有较强的扩展性,用户能够根据工程需要在总线上随意增减CAN设备,实现对试油中相关参数的测试;监控软件采用OPC技术为试油数据传输提供了开放和实时的数据传输接口,解决了现场、中心站之间的实时数据通信问题.该系统功能完善,扩充性强,现场连接方便;软件操作简单,界面友好,具有网络IE浏览和网络及时通信功能.

通过分析机场行李快递运转系统的火灾特点,探索如何设置火灾报警和自动灭火系统。

Comprehensive fuzzy evaluation was usde to study the appraisal problem of the urban fire risk,The method and process of studing urban fire risk using comprehensive fuzzy evaluation were advanced and applied into practice.

This paper explains the varied responsibilities of illegal sale of an unqualified fire product based on the investigation,obtaining evidence and regulations.The decision of administrative punishment is made about this illegal sale.

The author according to current fire hydrant water-supply system designs the location being hit by the interior fire hydrant,if fire hydrant of fire control electric elevator atria count enters a sum,fireproof if the fire hydrant being allotted a siding-to-siding block can is borrowed,fire hydrant water-supply system pressure reduction,subarea principle disputes and other issues have brought forward my viewpoint for everybody deliberating.