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Inverted Arch Formwork Jumbo

CRAC has long been committed to research the lining construction technology and develop the lining formwork jumbo. In 1980s, CRAC has successfully designed a formwork jumbo with variable section. And in recent years, CRAC has undertaken a series of research programs related to lining construction technology and lining equipment, which are assigned by the Ministry of Railways, the Ministry of Science and Technology, Liaoning Provincial Department of Water Resources and China Railway Group Limited. In terms of the research achievements, 2 invention patents and 3 utility model patens are granted and the developed full-ring inner-through lining formwork jumbo has been awarded the 1st prize of Science and Technology Award of China Railway Group and the 1st prize of Technology Innovation Award of CACEM.

And as an important sci-tech industrialization base of CRAC, Chengdu Yanfeng Science and Technology Development Co., Ltd. is focused on the transformation of scientific and technological achievements, by virtue of strong research strength and great achievements in scientific research and technology, excellent design teams, advanced digital design platform and professional service staff, to provide customers with various types of lining formwork jumbos and complete solutions for lining construction.

The product has the following characteristics:

1. Advance invert arch construction can be achieved in full breadth at the behind of the working face.

2. Construction vehicles are allowed to pass through the trestle.

3. Invert arch construction will not affect the normal work of matching equipments for tunnel excavation, such as vent pipe, cable, etc., achieving parallel operation of invert arch construction and tunnel excavation.

4. With the floating device, the quality of invert concrete will not be affected by vehicles passing through the trestle during concrete curing.

5. By means of the concrete curing section with equal strength, it can speed up the invert construction process and ensure enough concrete strength.

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