Shanghai ICE's 815C hydraulic vibratory hammer recently successfully extracted a 19-meter-long cement square pile at the Longshui South Road construction site in the Xuhui Riverside area of Shanghai.

　　The Longshui South Road construction site in Xuhui, Shanghai is currently in the foundation preparation stage. There are more than a dozen cement square piles buried for many years that need to be extracted. The cement square piles have a cross-section of 40*40 cm and a length of 19 meters. Due to the passage of time, the cement piles are firmly combined with the muddy soil, and traditional tools cannot extract them, and there is no suitable clamp to grip the piles.

　　Engineers from Shanghai Zhongyuan Construction Engineering Co., Ltd. fully utilized their ingenuity to design a special casing (25 meters long) to hold the square piles, and rented the 815C hydraulic vibratory hammer from Shanghai ICE Construction Equipment Trading Co., Ltd. to extract the piles.

　　Shanghai ICE's vibratory hammer is equipped with a hydraulic power pack. The ICE power pack uses a diesel engine to drive a hydraulic pump to provide high-pressure hydraulic oil, driving the eccentric blocks of the vibratory hammer to generate excitation force. The function of the pump is to provide high-pressure hydraulic oil, which flows through oil pipes for energy transmission. The ICE power pack adopts a variable displacement pump, and the flow and pressure can change in real time with the load. When the pump is working, it dynamically adjusts the pump output flow according to the change of load pressure, avoiding the generation of a large amount of heat from hydraulic oil overflow. At the same time, the pump power is adjusted in real time, resulting in extremely high efficiency and energy saving. When the ICE vibratory hammer reaches the maximum pressure of 350 bar due to difficult pile driving, the system will automatically reduce the hydraulic flow by 50% to ensure that the vibratory hammer does not overheat. The operator can retract the hammer upward a little until the appropriate pressure is reached and then continue driving the pile downward. This means that even under heavy working conditions, the ICE vibratory hammer will not cause the hydraulic oil to exceed 85 degrees Celsius, avoiding the risk of damage caused by overheating of the gearbox oil and not accelerating the aging of the hydraulic oil. The ICE vibratory hammer can work continuously without the need for cooling time.

　　Shanghai Zhongyuan has rich experience in using ICE hydraulic vibratory hammers. The ICE 815C has an excitation force of up to 125 tons, and gradually lifts the cement piles by vibratory extraction. It takes about 45 minutes to extract one pile.

　　Therefore, ICE's hydraulic vibratory hammer is not only good at driving and extracting various steel sheets and casing piles, but also has many successful practical experiences in driving and extracting cement piles.

　　Construction Background:
　　The Xuhui Riverside area is the only area in Xuhui District that can be developed on a large scale and in a contiguous manner. It is located in the central urban area of Shanghai where land resources are scarce, with a planned total land area of about 731 hectares. It has high-quality riverside shoreline resources, with about 8.4 kilometers of shoreline along the river, located on the "convex bank" of the Huangpu River, facing the Houtan Park of the World Expo across the river.

　　During the "Eleventh Five-Year Plan" period, the Xuhui District Government completed the relocation of 18 enterprises along the river, covering a land area of 130 hectares. The cultural theme park is one of the main projects of the Xuhui Riverside during the "Twelfth Five-Year Plan" period.

　　The Riverside Cultural Theme Park will be built on the original sites of Shanghai Cement Plant and Shanghai United Cement Plant (Longshui South Road and Longjin Road), and is currently in the foundation preparation stage.