Open caisson support structure and open caisson construction method
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A supporting structure and caisson technology, applied in infrastructure engineering, construction, etc., can solve problems such as waste of reinforced concrete resources, and achieve the effects of stable structure, easy assembly, and convenient disassembly
Active Publication Date: 2017-07-28
杭州广赢建设工程有限公司
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Problems solved by technology
The reinforced concrete caisson support only works during the pipe jacking process, and the reinforced concrete caisson support will be discarded after the pipe jacking pipe construction is completed, resulting in a large waste of reinforced concrete resources
Method used
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Embodiment 1
[0041] Embodiment one: a kind of caisson construction method, with reference to figure 1 , including the following workflows: surveying and lofting positioning, excavation of foundation pit, construction of sand cushion and plain concrete cushion, fabrication of caisson first section, first section formwork removal, caisson second section production, second section formwork removal , caisson sinking, caisson bottom sealing and floor construction, floor backfill, pipe jacking construction, internal structure and roof construction, and roof backfill.
[0042] Among them, after the first section of the caisson and the second section of the caisson are removed, concrete maintenance and construction joint treatment are required.
[0043] Include the following steps:
[0044] Step 1: Foundation pit measurement and setting out. According to the geological conditions revealed in the caisson design drawings and engineering geological reports, determine the excavation depth of the cais...
Embodiment 2
[0061] Embodiment two: a kind of caisson supporting structure, refer to figure 2 , The caisson support structure can be used repeatedly. A sleeper 1 is placed on the sand cushion, and a formwork is set up on the sleeper 1. The formwork is composed of a wooden board 2 and a blade foot formwork 3, and the blade foot formwork 3 is arranged in the wooden board 2; Shape setting, its bottom is provided with a flat part 4, the angle steel 5 is fixed on the inner side of the flat part 4, a spacer 9 is provided between the blade foot formwork 3 and the plank 2, and the spacer 9 is arranged outside the tapered part of the blade foot formwork 3; An iron frame 6 is installed outside the plank 2, and the iron frame 6 and the plank 2 are fixed by pull bolts 7, and a keel 8 is set between the iron frame 6 and the plank 2 to isolate.
[0062] refer to image 3 , the iron frame 6 is separately arranged, and the iron frame 6 includes a plurality of iron frame units 61 plugged in to form, one...
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Abstract
The invention discloses an open caisson support structure and an open caisson construction method. The open caisson support structure comprises a sleeper arranged on a sand cushion layer, a formwork is erected on the sleeper, and the formwork is composed of a plank and a blade foot die plate. A flat portion is arranged at the bottom of the blade foot die plate. Angle iron is fixedly arranged on the inner side of the flat portion. The plank is arranged on the outer side of the blade foot die plate. The plank is laid in the circumferential direction of the blade foot die plate. A cushion frame is arranged between the blade foot die plate and the plank. An iron plate frame is mounted outside the plank. The bottom of the iron plate frame and the sleeper are assembled together. The iron plate frame is connected with the plank through a split bolt in the radial direction. Multiple keels are arranged between the iron plate frame and the plank for isolation. The iron plate frame is configured in a split manner and formed by inserting multiple iron plate frame units. The split bolt is formed by connecting multiple bolt single joints. The open caisson construction method adopts the open caisson support structure for supporting. According to the open caisson support structure and the open caisson construction method, the split mounting type open caisson foundation is adopted, assembly is easy, and the reuse can be achieved.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a caisson support structure and a caisson construction method. Background technique [0002] With the improvement of urban construction and the increasingly complex engineering environment, it is necessary to ensure the protection of the surrounding environment during the construction period. The foundation of the caisson is a form of underground structure and deep foundation constructed by the caisson method. , more attention should be paid to the protection of the surrounding environment to ensure that there will be no safety accidents. The caisson is generally made into a well-shaped or rectangular structure on the surface, and then continuously excavated from the well under the enclosure of the well wall , so that the caisson gradually sinks under the action of its own weight. After reaching the predetermined design elevation, the bottom is sealed to build the i...
Claims
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Application Information
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