| 1. | Research on the length of plastic hinge of partially prestressed beams
部分预应力混凝土梁塑性铰区长度的研究 |
| 2. | Construction technology relating to the post - tensioning prestressed beams
记新集二矿河西电灌站机电技术改造工程 |
| 3. | Measurement of tension and anti - side bend of 40m i post - tensioned prestressed beam
后张法预应力工型梁张拉及抗侧弯措施 |
| 4. | The structure analysis methods during construction stage are investigated form the construction properties of twice - prestressed beam
本文从二次预应力梁的施工工艺出发,研究其在施工阶段的结构分析方法。 |
| 5. | ( 4 ) the difference of the constraint conditions makes the second moment in prestressed frames less than that in the prestressed beams
( 4 )约束条件的不同使单层两跨预应力混凝土框架梁中的次弯矩要远小于两跨的预应力连续梁。 |
| 6. | Then the proportion of the modulation of moment taken by the second moment in the total modulation in prestressed frame is less than that in prestressed beam
同时，次弯矩调幅占总调幅的比重在框架中要远小于连续梁。因此，次弯矩协助调幅的作用在框架中也弱于在连续梁中。 |
| 7. | The results show that the performances of precast prestressed beam - to - column concrete connections with unbonded tendons are equal or superior to that of a monolithic connection in terms of ductility and displacement - restoring capacity
结果表明，无粘结预应力装配式混凝土框架连接具有良好的耗能能力，在延性和变形恢复能力上比现浇连接更优。 |
| 8. | A 21 meter span unbonded prestressed composite beam fabricated from reactive powder concrete ( rfc ) was designed . then the performance and economy of this kind of beams were compared with conventional prestressed beams and steel - concrete composited beams . the results indicated that rfc beams have superior performance
最后，对大跨度( 21m )梁，通过三种设计方案结构性能和经济性等方面的对比，对采用活性粉末混凝土叠合梁的优越性进行了综合评价。 |
| 9. | Moreover , six externally prestressed beams which were experimented overseas were analyzed with this method developed , by comparing the calculation result and the experiment data , it is found that the calculating method has a satisfactory precision and is worth being promoted
利用这一概念，建立了直接通过塑性铰区长度和曲率半径求体外预应力筋应力和梁极限弯矩的简化公式，用简化公式对国外有关6片体外预应力梁进行了计算，并与试验结果进行对比，证明本研究中的简化公式具有较好的精度，值得推广。 |
| 10. | Subassemblage and prestressed concrete frames are assembled by precast prestressed beams and columns with tendons in the joints of the frames . these beams and columns are hoisted in site and the tendons are passed through the moire pipes . so prestressing force are brought to the joints of the frame . these tendons also can assume the moments at the end of the beams in ordinary condition
预压装配式预应力混凝土框架是采用工厂化生产的预制柱和预制预应力梁，运至现场直接吊装，梁柱就位后，将后张预应力筋穿过梁柱预留孔道，对节点实施预应力张拉预压。 |
