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CHINA JIANGSU JUWEI MACHINERY CO.,LTD

Add:Western industrial Park, Dongtai City, Jiangsu Province, China

ZIP:224217

TEL:+86-515-85422299

FAX:+86-515-85422399

HOT LINE:+86 13661556708

WEB:www.jwhammer.cn

           www.jsjuwei.cn

EMAIL:jwjx@jsjuwei.cn

Operating principle of hydraulic pile driver

2019-06-18

液压打桩锤厂家


The vibration type pile driver and extractor of hydraulic pile hammer manufacturer has used its high frequency vibration to vibrate the pile body at high speed, and send the vertical vibration caused by mechanical equipment to the pile body. As a result, the soil structure around the pile changes greatly, and the compressive strength decreases. The soil around the pile vaporizes and reduces the friction between the pile body and farmland. Then, the pile is driven into the soil by vibration and the weight of the pile body, When pulling out the pile, pull up the pile body under the condition of high-frequency vibration. If the soil layer is hard and moves down too slowly during vibration driving, the back arm can be used to move down or lift the pile by 0.6-1.2 m long, and then rush down again quickly. The excitation force required by the foundation piling machinery and equipment should be determined according to the soil layer, soil layer, moisture content and type and structure of the pile, Generally, 150-350kn vibration method is adopted to drive piles with high efficiency. The key points are U-shaped steel sheet piles, I-shaped steel sheet piles, Larsen piles, steel pipe piles and precast concrete piles with a length of 12m. This kind of pile driving method works in sandy soil, but the actual effect is weak in clay. At this time, when it is necessary to use the more powerful model of our factory, the vibration pile sinking process is: pile lifting__ Check__ Flatness__ Learn to put down the pile driver to make it slowly sink into the soil. The depth must be 1. (if necessary, install the pile cap)___ Check pile position and center line__ Pile driving by vibration to design depth 1__ Move the piling machine to the next pile and work again


Clay soil layer:


For the clay soil layer, the vibration effect destroys the original soil layer structure, changes the relative density of sand and reduces the cohesive force. With the increase of sensitivity, the friction resistance around the pile will increase. Therefore, it is necessary to apply the second stage acceleration or adopt the larger model of our factory


Sandy soil layer:


In view of the fusion and destruction of sand particles caused by the vibration of sandy soil layer, resulting in vaporization, the friction resistance of sand and pile around the pile is reduced, which is conducive to pile sinking. However, for high-density sandy soil layer and loose sand layer, the actual effect of vibration will be weakened due to soil characteristics. Therefore, different vibration output should be used.


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jiang su Office

1.png   Add: Western industrial Park, Dongtai City, Jiangsu Province

3.png  ZIP:224217

2.png   TEL:+86-515-85422299

首页底部联系 图标 传真.png  FAX: +86-515-85422399

2.png  HOT LINE:+86 13661556708

首页底部联系 图标 网址.png  WEB :www.jwhammer.cn

                  www.jsjuwei.cn

3.png  EMAIL: jwjx@jsjuwei.cn


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