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gravitation concrete pipe 预引力混凝土管
There is a crane ahead that is hanging a large concrete pipe. 前面有一台吊车正在吊着一只大水泥管。
As a new joist technique of concrete pipe pile, the prestressed concret e pile mechanical bond express joint has been used in engineering nowadays. 预应力混凝土管桩机械快速接头作为一种新型的管桩连接技术,近年在工程中时有使用。
The research results also indi-cate that the steel fiber reinforced centrifugal concrete pipe has better durability. 研究还表明,离心钢纤维混凝土管具有较好的耐久性。
In concrete pipe, corrosion-resistant liners may be placed in the invert of the sewer for protection. 在混凝土管道中，防腐衬里可以放置在管子里面保护管子。
The bending moment of common prestressed concrete pipe piles is relatively low under the horizontal earthquake action. 摘要普通预应力混凝土管桩在水平地震作用下抗弯能力较差；
When reinforced concrete pipe is needed for larger sizes, at interior protective coating or coal tar, vinyl, or epoxy should be considered. 如果需要大尺寸的钢筋混凝土管，内部衬里用煤焦油，乙烯基或环氧应该考虑。
Epoxy or plastic liming may be cast into the concrete pipe during manufacture;or bitumastic or coal tar epoxy may be painted on the concrete pipe surfaces after installation. 可以在制造混凝土管道时将环氧和塑胶衬里浇筑在里面，或在安装后用沥青砂浆或煤焦油屠宰混凝土管的表面。
The tests research of blasting vibration simulating earthquake were carried out by a reinforced concrete pipe embedded landscape orientation and hangfire. 摘要通过埋置钢筋混凝土管约束爆破的竖向震动，采用延时爆破方式进行模拟天然地震的试验研究。
Prestressed concrete pipe piles by post-tensioning method are widely used in harbor engineering because of its high flexural bearing capacity and low cost. 摘要后张法预应力混凝土大管桩由于抗弯承载力高和成本低等诸多优点，在港口工程中得到了广泛的使用。
On internal cause, taking good block-crack, anti-fatigue, anti-impactive steel-fibre concrete pipe can confirm security of the construction and reduce distributed steel. 在内因上,为保证结构长期安全性及减少配筋量,采用具有良好阻裂作用、耐疲劳、抗冲击的钢纤维砼管片。
Who discovered the Law of Gravitation? 谁发现了引力定律？
Based on the analysis of the inadequacy of the lifting capacity of piling barge in large-diameter prestressed concrete pipe pile driving construction, the measure of applying buoyancy generated by cavity drainage to remedy the inadequacy is put forward. 摘要针对混凝土大直径管桩沉桩施工时打桩船吊装能力存在不足的问题进行了分析，提出了利用管桩空腔排水产生的浮托力来弥补的措施。
The pull of gravitation causes matter to have weight. 万有引力的吸引使物质具有重量。
The calculation formula is proposed based on the results of bond strength of new and old concrete,which can estimate the ultimate capacity of connections between prestressed concrete pipe pile and pile cap. 最后,根据新老混凝土粘结性能的研究成果,对预应力混凝土大管桩与桩帽混凝土连接节点极限轴拔承载力计算给出了建议计算公式,与试验结果吻合较好。
Based on 19 flexurai tests and study results of prestressed concrete pipe pile-pile cap connections, failure patterns and mechanism of the test specimens are described, the main factors affecting flexural capacity of the connection are analyzed. 本文通过对十九个预应力混凝土管柱与桩帽连接节点的受弯试验研究;描述了连接节点的破坏形态和破坏机理;分析了连接节点受弯承载力的主要影响因素.
The test shows the effects of gravitation on bodies in space. 这次测试表明太空中万有引力对星体的影响。
Based on the flexurd tests on prestressed concrete pipe pile-pile cap cennections , the cracks , failure forms and performance characteristics are described the rigid property and ductility are analyzed. 基于预应力混凝土管与桩帽连接节点的受弯试验，描述了连接节点试件的裂缝特征、破坏形态及其受力特点，对连接节点区的嵌固性能及延性性质进行了分析和探讨。
National Stadium general contractor to receive independent study, proposed a new program : Concrete Jacking, from the bottom into concrete pipe from the bottom-up gradually filled. 起初，施工单位只能试着从上口往钢管里浇筑，每天从早到晚只能浇筑四五米。
Its pillar industries are concrete pipe, precasting concrete beams.According to different development periods of the two industries, company Y established different competitive strategies. 公司采取“相关多元化经营”的企业总体发展战略,确立混凝土管、预制混凝土梁为支柱产业,根据两行业的的不同发展周期,确立不同的竞争战略。