桩基的应用,在国内外十分广泛。而研制一种安装操作简便、准确可行且经济的试验装置,用以评定桩基的静荷承载能力,充分发挥桩基的性能,乃是大量采用各类型桩基,并要求较高的单桩承载力的关键。1000吨液压试桩装置包括锚固反力系统、加荷系统、测量系统。其特点为:(1) 试验程序完全符合规范要求。本装置配备了由4片钢桁架组成两榀12米跨的基准架,保证了规范要求锚桩、试桩与基准梁的支座距离大于4倍桩径的需要。又由于使用高压变量油泵对千斤顶供油,这样就可在较短的时间内完成加荷程序,这是重物加荷法不易达到的。(2) 能适用于多种单桩静荷试验方法。除了满足规范、规程要求的慢速维持荷载试验以外,还可以完成快速维持荷载试验,大、小循环静荷加载试验,单桩静荷偏心试验和桩的抗拔试验。为进一步 The application of pile foundation is very extensive at home and abroad. To develop a test device that is easy to install, accurate, feasible, and economical to assess the static load carrying capacity of pile foundations and to give full play to the performance of pile foundations, but to use a large number of pile foundations and to require high single piles. The key to bearing capacity. 1000 tons of hydraulic test piles include anchorage reaction systems, loading systems, and measurement systems. Its characteristics are: (1) The test procedure fully meets the specification requirements. The device is equipped with four steel trusses to form a two-for-one 12-meter-span reference frame, which ensures that the specification requires that the distance between the anchor pile, the trial pile and the reference beam is greater than 4 times the pile diameter. Since the jack is supplied with oil using a high-pressure variable oil pump, the loading procedure can be completed in a relatively short period of time. This is difficult to achieve with the heavy load method. (2) Can be applied to a variety of single pile static load test methods. In addition to the slow maintenance load test that meets the requirements of the code and regulations, it is also possible to complete the rapid maintenance load test, large and small cyclical static load test, static load eccentric test of single pile and pile pullout test. For further