Construction method for excavating square piles through rotary excavating machine and square chiseling head combined
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A construction method and technology of rotary excavator, applied in the direction of excavation, infrastructure engineering, drilling equipment and methods, etc., can solve problems such as inability to dig square holes, limited shape of rotary excavator, etc., to avoid artificial accidents and improve safety benefits , Improve the effect of safety factor
Inactive Publication Date: 2019-11-08
德宏守精建筑劳务有限责任公司
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[0003] For this reason, the embodiment of the present invention provides a method for excavating square piles with a rotary excavator combined with a square chisel head to solve the problem that the existing rotary excavator cannot dig a square hole due to its limited shape during the construction of square piles.
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Embodiment 1
[0055] see Figure 1-12 , a kind of rotary excavator combined square chisel head excavation square pile construction method provided by the present invention, described construction method comprises the following steps:
[0056] 1) Buried casing
[0057] Level the site, set out the pile position, determine the pile position of the square pile, excavate a square foundation pit 100 matching the shape of the casing around the pile location of each square pile, hoist the casing 101 to the pile location, and the outer side of the casing 101 Backfill and compact all around;
[0058] Specifically, the excavator unloaded the load of the landslide body, leveled the site, and left sufficient work space for the rotary excavator, crane, and pouring concrete. After setting out the pile position and determining the position of the pile hole, excavate a square foundation pit 100 at the position of the pile hole. can be deepened), the lower end of the casing 101 is inserted into the founda...
Embodiment 2
[0118] Taking the excavation and collapse treatment on the right side of BK0+220~BK0+422.11 and EK0+000~EK0+120 of a city ring expressway in a certain place as an example, the specific construction methods are as follows:
[0119] 1. Geological conditions
[0120] 1. Brown gray, off-white expansive soil, easy to collapse when exposed to water.
[0121] 2. Part of the slope has collapsed, there are cracks on the top of the slope, and there are local villagers' houses and local road changes above the upper slope.
[0122] 2. Treatment plan
[0123] A total of 54 anti-slide piles (2.0×2.5m) are installed, the piles are 12 meters long, and the pile-slab wall is 6 meters high.
[0124] 3. The actual construction situation
[0125] The square pile was excavated with a rotary excavator combined with a square chisel head, and the excavation operation took a total of 17 days.
[0126] As a result of the hole inspection, the verticality is 30-150mm, which is far less than the allowa...
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Abstract
The embodiment of the invention discloses a construction method for excavating square piles through a rotary excavating machine and a square chiseling head combined. The construction method comprisesthe following steps that (1) pile casings are embedded; (2) pile positions are set out; (3) small drilled holes are subjected to rotary excavating; (4) large drilled holes are subjected to rotary excavating; (5) the square chiseling head conducts trimming and hole clearing, and the square chiseling head comprises a connecting part and a square pipe, wherein one end of the connecting part is detachably connected with a drill rod of the rotary excavating machine, one end of the square pipe is fixedly connected with the outer wall of the connecting part, a notch is formed in the other end of thesquare pipe, and the notch is provided with a plurality of bucket teeth at intervals; and (6) pile hole forming detection is conducted, reinforcement skeletons are mounted, pile foundation concrete ispoured, the pile casings are detachably and pulled, thus the square piles are formed, and square pile construction is completed. According to the construction method, by designing the square chiseling head, after the rotary excavating machine adopts a traditional rotary excavating drill bit to drill circular holes, the rotary excavating drill bit is replaced with the square chiseling head, the inner walls of the pile holes are trimmed, thus a mechanical trimming mode of the square chiseling head replaces an existing manual excavating mode, the construction duration is obviously shortened, andthe construction efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of engineering construction, and in particular relates to a construction method for excavating square piles with a rotary excavator combined with a square chisel head. Background technique [0002] In the construction of highway, municipal and housing construction projects, the technology of drilling piles has become more and more mature, and the rotary excavator is also widely used. The rotary excavator has played a huge advantage in replacing manual excavation. "Safe, applicable, economical and beautiful" " has been fully reflected. However, in the construction of square piles, due to the geometrical limitation, the rotary excavator can only rotary dig round holes. If a square hole suitable for square piles is to be obtained, the soil around the round hole has to be excavated manually. The efficiency of manual excavation is slow. Safety, progress, and benefits cannot be guaranteed. Contents of the inven...
Claims
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Application Information
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