Large-diameter cast-in-situ bored pile and construction method thereof
A technology of bored piles and construction methods, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of easy formation of sediment, incomplete hole cleaning, and difficult cleaning of hole bottom sediment, etc., and achieves wide applicability , Eliminate adverse effects, fast construction effect
Pending Publication Date: 2020-12-15
浙江中正岩土技术有限公司
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Problems solved by technology
In the actual construction process, due to the limitations of the construction team's quality, technical level and construction technology, for the cast-in-situ piles that are poured with concrete after the holes are formed, the bottom of the pile is extremely difficult due to the incomplete cleaning of the holes or the difficulty in cleaning up the sediment at the bottom of the holes. Easy to form sediment
Method used
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[0017] The technical solutions of the various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments described in the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the protection scope of the present invention.
[0018] Such as figure 1 As shown, a construction method of large-diameter bored piles includes: Step 1, determine the construction site and complete the scheme design; Step 2, fixed-point drilling, after the completion of the hole rotation, enlarge the diameter of the bottom of the hole, and after the expansion, open Dig two ring grooves; step 3, hoist the fan-shaped cage into the drill hole by the crane, and put it into the reaming part; step 4, arrange workers to go down into the...
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Abstract
The invention discloses a large-diameter cast-in-situ bored pile. The pile comprises a column body and a bottom. The ground of the bottom further comprises two concentrically-arranged annular protruding strips. After a cylindrical cage and an annular cage are connected into a whole, concrete is poured into the cages, and then the cages are coagulated and formed. Five grouting pipes are connected with the outer side of the cylindrical cage and connected with a grouting machine. According to the large-diameter cast-in-situ bored pile and the construction method thereof, the method is wide in applicability, high in construction speed, and reliable in quality; adverse effects of hole bottom sediment can be eliminated; and the pressure bearing area of the end of the pile constructed through themethod is increased, and the bearing capacity of the end of the pile is improved.
Description
technical field [0001] The invention relates to the technical field of bored piles, in particular to a large-diameter bored pile and a construction method thereof. Background technique [0002] In engineering, bored piles with a pile diameter greater than or equal to 0.8m are generally defined as large-diameter bored piles. Large-diameter foundation piles have become an increasingly important foundation form in the fields of urban high-rise buildings, underground engineering, highway and railway bridges, port and wharf engineering, etc. due to their advantages such as wide applicability, fast construction speed, reliable quality, and strong bearing capacity. Since large-diameter piles are designed to carry a large load and are concealed underground, it is very important to strictly control the construction quality of pile foundations and ensure the ultimate bearing capacity of single piles for the safety and economy of buildings. In the actual construction process, due to t...
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Patent Timeline
Login to View More IPC IPC(8): E02D5/44E02D15/04
CPCE02D5/44E02D15/04E02D2250/0023
Inventor 周旭东陈美娟周嵩李泽良
Owner 浙江中正岩土技术有限公司