西安建筑科技大学学报(自然科学版)

为获得无固定连接式压缩机基础的动力特性,试验以某天然气集气站实际工程为依托,采用现场地基基础压力监测、原位动力测试相结合的方法对该类型压缩机基础进行了研究.研究结果表明:(1)无固定连接式压缩机基础底部的压力受压缩机动力作用的影响较小且其影响随深度的增加而减小;(2)各土层压力波动随时间推移约20 d后趋于稳定,稳定后的压力与静压力差值较小;(3)基础设计采用的碎石垫层吸收了大量振动能量,具有明显的减振效果,削弱了动力作用对地基基础的影响;(4)基槽侧边的碎石垫层在限制机组位移的同时降低了振动对基础的影响.

In order to obtain dynamic properties of non-fixed compressor foundation, the field monitoring and in-situ dynamic test were used to study the compressor foundation according to actual gas gathering station project. The results show that:(1)The bottom pressure of the non-fixed compressor foundation is less affected by the dynamic action of the compressor;(2)Its influence decreases with the increase of the depth.20 days later the soil pressure tends to be stable, and the difference between the steady pressure and the static pressure is small;(3)The gravel cushion adopted in the foundation design absorbs a great deal of vibration energy, which has obvious damping effect and could weak the influence of the dynamic action on the foundation;(4)The side of the gravel cushion can reduce the influence of vibration on the basis and limit the displacement of compressor.

引言
1 工程概况
2 压力监测
3 动力测试
4 结论

图1 试验场地情况
Fig.1 Test site situation

图2 ZTY630大型活塞式压缩机<br/>Fig.2 ZTY630 large piston compressor

图2 ZTY630大型活塞式压缩机
Fig.2 ZTY630 large piston compressor

图3 基础平面图
Fig.3 Foundation plan

图4 基础剖面图
Fig.4 Foundation profile

图5 压力计平面布置图<br/>Fig.5 The lane layout of the pressure gauge

图5 压力计平面布置图
Fig.5 The lane layout of the pressure gauge

图6 侧边压力计布置图<br/>Fig.6 The layout of the side pressure gauge

图6 侧边压力计布置图
Fig.6 The layout of the side pressure gauge

图7 第四层压力盒压力随时间的变化<br/>Fig.7 The variation of pressure in the fourth layer pressure box with time

图7 第四层压力盒压力随时间的变化
Fig.7 The variation of pressure in the fourth layer pressure box with time

图8 代表性位置分布图<br/>Fig.8 The distribution map of representative position

图8 代表性位置分布图
Fig.8 The distribution map of representative position

图9 第三层不同位置各阶段压力对比图<br/>Fig.9 The comparison of pressure in different stages of the third layer at different positions

图9 第三层不同位置各阶段压力对比图
Fig.9 The comparison of pressure in different stages of the third layer at different positions

图10 B位置不同深度压力随时间的变化<br/>Fig.10 The pressure variation with time at different depth in B position

图10 B位置不同深度压力随时间的变化
Fig.10 The pressure variation with time at different depth in B position

图11 底橇侧边压力随时间的变化<br/>Fig.11 The variation of side pressure on bottom sled with time

图11 底橇侧边压力随时间的变化
Fig.11 The variation of side pressure on bottom sled with time

图12 动力测试测点布置图<br/>Fig.12 The dynamic test point layout

图12 动力测试测点布置图
Fig.12 The dynamic test point layout

表1 动力测试各测点的位移<br/>Tab.1 The dynamic test of displacement of each measuring points

表1 动力测试各测点的位移
Tab.1 The dynamic test of displacement of each measuring points

图13 测点2位移时程图<br/>Fig.13 The time-history diagram of displacement at measuring point 2

图13 测点2位移时程图
Fig.13 The time-history diagram of displacement at measuring point 2

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备注

引言

1 工程概况

2 压力监测

3 动力测试

4 结论

期刊信息