某六层砖溷结构民用住宅楼毕业设计(PKPM软件).docVIP

某六层砖混结构民用住宅楼毕业设计(PKPM软件) 摘要: 本工程为多层砖混民用住宅。建筑层数为六层、建筑高度为20.38m，基底占地面积为574.33㎡、总建筑面积3470.0㎡。抗震设防烈度7度、场地类别为Ⅱ类，结构设计使用年限为50年。本工程为二类建筑，耐火等级为二级，工程±0.00同绝对标高13.38m。 结构设计依 ... 摘要:BR本工程为多层砖混民用住宅。建筑层数为六层、建筑高度为20.38m，基底占地面积为574.33㎡、总建筑面积3470.0㎡。抗震设防烈度7度、场地类别为Ⅱ类，结构设计使用年限为50年。本工程为二类建筑，耐火等级为二级，工程±0.00同绝对标高13.38m。BR结构设计依据国家相关规范进行：计算各楼板和屋面板的恒荷载，同时确定活载值。根据荷载设计值计算出楼面和屋面的配筋。将板上均布荷载传给各墙,然后根据各墙所受荷载及墙体自重，验算墙体抗压承载力。根据抗震设防数据及结构重力荷载代表值，计算出水平地震作用下的各墙承担的剪力，并验算墙体的抗剪承载力。计算出各段基础上部荷载，并由此确定基础类型和配筋。BR　设计中使用了中国建筑科学研究院编制的PKPM软件。BR　经过验算，该结构符合安全性、可靠性要求。BR[关键词]:砖混结构、承载力，软件BRThe design of multistory brick and concrete mixed buildingBRAbstract:BRThis engineering is a multistory building. It is a brick and concrete mixed structure. The building has six tiers,building height is 20.38m. Gross building BRarea is 574.33msup2;,total floor space is 3470.0msup2;. Intensity of anti-seismic de- /PP/P p水稻稻曲病菌厚垣孢子细胞壁多糖测定(字)br / 摘nbsp; 要：水稻稻曲病(Rice False Smut)是由稻绿核菌[Ustilaginoidea virens (Cke)Tak]引起的水稻穗部真菌性病害。该病在世界各水稻产区均有发生，近年来呈现加重趋势，它不仅直接影响水稻的品质和产量，而且其产生的毒素对人和动物均有毒性。br / 采用了4种机械破壁和两种酶（蜗牛酶和溶菌酶）对该病菌黄色和黑色厚垣孢子进行破壁，选取最佳破壁方案，结果表明液氮研磨－超声破碎法破壁效果最好，黄色和黑色厚垣孢子的破壁率均可达98%以上。得出液氮研磨－超声波破碎法是一种稻曲病菌厚垣孢子破壁的有效、简便、适宜在实验室应用的方法br / 采用碱提法提取不同颜色厚垣孢子壁内的多糖，分别用硫酸蒽酮法测定多糖含量，结果表明：黄色厚垣孢子壁内含多糖73.867%；黑色厚垣孢子壁内含多糖81.207%。br / 关键词：稻曲病；稻曲病菌；厚垣孢子；多糖成分 br / br / Determination of the chlamydospores CWPS of ustilaginodea virensbr / Abstract：Rice false smut is a fungal disease in rice caused by Ustilaginoidea virens (Cke)Tak, which harmed the panicles of rice. Rice false smut is a worldwide disease, and became more and more seriously in recently years, which not only influence greatly on the yield and quality of rice, but ustiloxins also cause poisoning to human and animals. br / smut fungus, Four wall-breaking methods and two enzymes (lysozyme and snailase) were been used. Results showed that Liquid nitrogen grinding plus ultrasonic crushing technique was the best one, its wall-breaking rates on yellow and black chlamydospores could all reached over 98%.