YDB 系列扁形张拉千斤顶 Flat stressing Jack (YDB Series)

YDB 系列扁形张拉千斤顶是我司经过大量工程实践研制的一种新型扁形预应力张拉千斤顶。其优点如下：采用双并列油缸的结构，扁锚采用整体一次张拉，客服了扁锚由于单孔张拉而引起构件应力不均匀，预应力筋延伸量不足，构件扭曲现象，并且可提高施工工效。可广泛用于各种锚固体系的扁锚预应力施工。
YDB Flat stressing jack is a new integral prestressing tension jack researched and developed by our co. based on a great deal of the engineering practice. Its main advantages are as follows：possesses the advantages of adopting the structure of two cylinders in parallel,once integrally stressing the flat anchorage,overcoming the disadvantages of the component asymmetrical stress,lack of scant extension amount of the PC tendon and component distortion caused by mono-hole stressing for the flat anchorage,and improving the construction efficiency. YBD series Flat Jack was developed for bridge bearing maintenance and replacements and also for heavy lifting work during natural disasters like earthquake. Its small and compact design allows it to be inserted between the confined spaces of two structures. It can be widely used in various flat anchorage prestressing constructions of the anchorage system.