Published on 2026-10-13
Hengshui Zhanhe Engineering Rubber Co., Ltd. supplies bridge jacking and related engineering rubber products to contractors, distributors and infrastructure projects worldwide. Bridge jacking lifts the superstructure temporarily with a group of hydraulic jacks to create working clearance, most often for bearing replacement, pier remediation or profile correction. The difficulty lies not in raising the beam but in avoiding additional internal forces while doing so.
This article explains the working principle, main types, typical applications, installation points, selection criteria, standards and frequently asked questions about bridge jacking, and is intended for engineers, purchasers and project managers.
Bridge jacking lifts the superstructure temporarily with a group of hydraulic jacks to create working clearance, most often for bearing replacement, pier remediation or profile correction. The difficulty lies not in raising the beam but in avoiding additional internal forces while doing so.
Working principle: The product works through elastic deformation and mechanical interlock to provide reliable sealing or load transfer.
Bridge Jacking is manufactured and inspected according to applicable national and industry standards. Hengshui Zhanhe Engineering Rubber Co., Ltd. carries out batch inspection before delivery, and inspection certificates together with third-party test reports (where required by the project) can be provided.
Typical standards applied to this product family include Chinese national and transportation industry standards; equivalent international standards can be referenced upon request.
A: Three things: small increments with a hold-and-observe pause at each stage; temporary supports added as the beam rises so the structure stays supported even if one jack fails; and closed-loop movement and pressure control that stops pumping automatically once any point exceeds its threshold.
A: Bearing replacement at a single pier is usually finished in one day shift. Whole-span synchronized jacking including installation and calibration typically needs three to seven days.
A: Per jacking point or per span. The main variables are the number and capacity of jacks and the count of synchronized control points; mobilisation and scheme approval also weigh heavily when the works are small.
A: Load restriction or closure of lanes above the working span is usually required. Live load directly changes support reactions, and the lighter the deck during jacking the easier force control becomes, subject to traffic authority approval.
Jacking is costed per lifting point or per span. Hydraulic plant and the synchronization system dominate the cost, commonly 35%-50% of the total through mobilisation and hire hours; temporary supports, new bearings and grouting materials account for 25%-35%; the remainder covers scheme preparation and approval, monitoring, labour and traffic management. Multi-span projects with dense jacking points spread costs well, whereas isolated single-pier jobs carry a higher unit rate.
Packing: standard export packing (woven bags, pallets or wooden cases). Delivery terms: EXW, FOB, CFR, CIF or DAP as agreed. Payment terms: T/T, L/C or other terms subject to negotiation.
For specification sheets, samples, pricing or project support, please contact Hengshui Zhanhe Engineering Rubber Co., Ltd.. Email: 150051331@qq.com · Tel/WhatsApp: +86-13833886677 · Factory: No.168, Zhangtuantuo Village, Dengzhuang Town, Taocheng District, Hengshui, Hebei, China. We reply to export enquiries within 24 hours on working days.