在实际支撑系统中合理运用扣件式钢管脚手架的施工技术

本文主要通过工程实例介绍扣件式钢管脚手架在高大跨度梁板模板支撑中的应用,并根据有关规范规定、现场实际情况及现有材料等,结合实践经验对其进行探讨和总结.     

被征地农民生活水平不降低的维护措施

保持被征地农民实际收入水平不下降并有一定增长,必须成为其原有生活水平不降低的衡量标准.要达到此标准,则应从确保经济补偿收益、消除基本生活风险、增强收入获得能力等方面建立起对被征地农民的经济补偿和生活保障体系.     

无筋砌体局部受压探讨

无筋砌体梁端支承处砌体局部受压承载力计算存在不完善之处，针对有效支承长度和梁端支承条件，提出修正公式及研究方向。     

载银竹炭的制备及性能研究

采用还原载银法对改性竹炭进行载银试验，得到了不同载银量的载银竹炭。利用扫描电镜对其结构进行分析的结果表明，银主要分布在竹炭的外表面和大孔中。同时，对比了竹炭在载银前后的吸附能力，包括碘吸附值、苯酚吸附值、灭菌效果以及载银量对它们的影响，结果表明，该载银竹炭可基本保持其原有的吸附能力。而且具有一定的灭菌效果。     

加强哈尔滨市农业科技支撑体系建设的对策

加强农业科技支撑建设是发展现代农业和建设社会主义新农村的必然要求.哈尔滨应培植需求方的技术吸纳动力,建立多元化技术推广体系,加速技术转移,完善以技术进步为导向的新农村建设政策体系,改善新农村科技支撑体系建设的环境和基础条件.     

农作物支撑用防腐竹材的耐腐性试验

将木材防腐剂CCA处理后的竹材用作农作物支撑材使用,5 a后抽查,竹材外观完好无损,竹材中的头部载药量降低率为0.125%,尾部的为0.187%,土壤含砷量为1.052 mg/kg,即对土壤没有造成不良污染。对比未处理材,CCA处理后竹材的使用寿命延长了3倍以上,不仅减少了竹材消耗量,而且降低了农业生产中使用竹材的成本,增加了农民的收入。     

The Property Delimitating and Its Efficiency Analyzing of Cooperative Investment in Supply Chain

In supply chain management, the forms of cooperation between the manufacturer and the supplier are various, and the forms of cooperative investment in supplier's renovation, study of fresh product and founding the system of share information are important. Incomplete Contracting Approach is applied to study the property delimitating and its efficiency problems of cooperative investment the strategy of manufacturer supports the renovation of supplier in supply chain through analyzing the equilibrium of incomplete information game in the cooperative investment of manufacturer and supplier. We illustrates the fitness of the three manufacturer's strategy of supporting, which are former share investment, let profit and subsidy. The conclusion is given that both parties define the form of property is basis on respective ability of bargaining.     

Model test of influence of excavating new interchange tunnel on existing tunnel

In order to analyze the influence of construction of new interchange tunnel on existing tunnel, a three-dimension model test of interchange tunnel is carried out with the system of structure and surrounding rockmass of highway tunnel. Existing tunnel’s surrounding rock pressure, internal displacement and supporting internal force are measured. The results show that, firstly, excavating new tunnel has obvious influence on section Ⅰ of existing tunnel, and has little influence on section Ⅱ.All surrounding rock pressure keeps decreasing and arch bottom surrounding rock’s stability reduces. Secondly, crown and hance internal displacement manifest tensile deformation, and the deformation at crown is bigger than that at hance. Thirdly, exiting tunnel’s supporting axial force keeps increasing and supporting moment keeps decreasing. Finally, excavating new interchange tunnel has obvious influence on exiting tunnel’s surrounding rock pressure, internal displacement and supporting internal force when adjacent space is 0.25D, and it indicates that interchange tunnel’s adjacent space should be no less than 0.5D.     

塔中沙漠油田基地路生物防沙体系建设的可行性分析

通过对塔中沙漠油田基地立地条件和支持条件的分析研究表明，在塔中沙漠油田基地路建设生物防沙体系，只要选择的树种得当，灌溉方式和造林技术合理，在具有依托条件的情况下，建立公路生物防护体系是完全可行的。在结构布局上要与已布设的机械防护措施相配合，充分发挥机械措施的防护效益和保护作用。在苗木栽植时可根据不同的立地条件采取相应的措施，造林季节选择在早春和秋末均可。     

溢流橡胶坝有限元分析

应用膜结构的几何非线性理论并结合有限元通用软件ANSYS对橡胶坝溢流情况进行应力、变形分析。对橡胶坝过水溢流进行了简化,得到所选材料坝袋溢流情况下的极限承载力状态,对于橡胶坝的工程管理起到一定参考价值。