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Equipment and Construction Method for Shallow Burying and Deep Pipe Jacking to Control Ground Structure Deformation
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A technology of structural deformation and construction method, which is applied in the direction of mechanical equipment, pipeline laying and maintenance, pipes/pipe joints/pipe fittings, etc., can solve the problems of large ground structure deformation, reduce the amount of backfill, obtain social benefits, and reduce construction costs. The effect of excavation volume
Active Publication Date: 2019-07-12
SINOHYDRO BUREAU 11 CO LTD
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This patent cannot solve the problem that the deformation of the ground structure is controlled during construction, resulting in a large amount of deformation of the ground structure
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Embodiment 1
[0030] Such as Figure 1-2 As shown, the equipment for controlling the deformation of the ground structure provided by the present invention for shallow-buried and deep pipe jacking includes the sleeper 2 arranged on the front side of the caisson background wall 1 in the caisson, and the sleeper 2 is provided with several groups of jacking picks 4 An iron sleeper 3 connected at one end, the other end of the top pick 4 is fixedly connected with a top iron 5, and the top iron 5 is placed on the side wall of the concrete pipe 6, and the concrete pipe 6 is provided with a grouting hole 7. The concrete pipe 6 is set at a distance of 1.5-3m from the ground. The background wall 1 has a thickness of 50cm, an outer diameter of 5m, and a height of 3.5m. In this embodiment, there are preferably three sets of jacks 4 with a specification of 200T. The diameter of the concrete pipe 6 is in the range of 1.4-3.6m, preferably 3.5m. After the concrete pipe 6 is in place, the construction per...
Embodiment 2
[0032] In this embodiment, the present invention provides an equipment construction method for controlling ground structure deformation by using shallow buried and deep pipe jacking, including the following steps:
[0033] Step 1, laying out the excavation line in the original landform 11 according to the design, and digging down the caisson and the receiving pit 9 according to the set position and the set depth of the excavation line;
[0034] Step 2, use the total jacking force calculation formula (1) to select equipment,
[0035] P=n×G×L……(1);
[0036] In the formula, P-total jacking force (KN), G-unit length pipe body deadweight (KN / m), L-jacking total length (m), n-soil quality coefficient, n is selected 2 among the present embodiment, and selection range: 1.5~2, after calculation, the total jacking force P=25KN / m×55m×2=2750KN.
[0037] According to the calculation formula of the jacking force, the jacking equipment is three sets of 200T jacking picks, one of which is a...
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Abstract
The invention relates to the technical field of pipeline laying construction, in particular to equipment and a construction method for shallow-buried and deep-pipe jacking to control deformation of ground structures. In the equipment and construction method for shallow-buried deep pipe jacking to control ground structure deformation provided by the present invention, the equipment for shallow-buried deep pipe jacking to control ground structure deformation includes a sleeper arranged on the front side of the caisson background wall, and the sleeper is provided with An iron sleeper connected to one end of several groups of top picks, the other end of the top pick is fixedly connected with a top iron, and the top iron is placed on the side wall of the concrete pipe, and the concrete pipe is provided with a grouting hole. The equipment and method of the present invention can reduce the amount of excavation and backfilling in shallow buried deep pipe jacking construction, obtain considerable economic benefits, complete construction tasks without affecting normal traffic, and obtain certain social benefits.
Description
technical field [0001] The invention relates to the technical field of pipeline laying construction, in particular to equipment and a construction method for shallow-buried and deep-pipe jacking to control deformation of ground structures. Background technique [0002] In the prior art, Chinese patent CN103938703A discloses a construction method for pipe jacking, which includes the following steps: step 1, release the position of the excavation line at the selected construction position according to the centerline of the designed pipeline, and excavate downwards according to the position of the excavation line A working well and a receiving well; wherein, the working well adopts a square caisson structure, the clearance size of the square caisson structure is length L×width B, and the net depth is 3m to 9m, and the side walls around the working well are poured with reinforced concrete, Concrete bottom cover is laid on the bottom of the working well and a reinforced concrete ...
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