Noise reduction construction method for rotary excavating pile

Abstract

The invention relates to the technical field of building construction, in particular to a noise reduction construction method for a rotary excavating pile. The noise reduction construction method for the rotary excavating pile specifically comprises the following steps that S1, rotary excavating and soil drilling are conducted, specifically, a single / double-open drilling tool is adopted, a rotary drilling rig rotary table is utilized, and the drilling tool is rotated to drill a soil layer to take soil; s2, push rod soil unloading, specifically, a hydraulic push rod is used for pushing a steel disc at the top of the drilling tool, and soil slag in the drilling tool is unloaded into a steel hopper; s3, the step S1 and the step S2 are repeated till the strongly-weathered mudstone layer is excavated in a rotary mode; s4, drilling tool replacement: when the rotary drilling rig performs construction to a relatively hard rock stratum, replacing the single / double-opening drilling tool with a barrel drill; s5, rotary excavating and soil drilling are conducted, specifically, a rotary drilling rig rotary table is utilized, and a barrel drill is rotated to drill a hard rock stratum along a previous drill hole to drill rock soil; s6, unloading the soil by the soil digging device: pressing the barrel drill to insert the barrel drill into the soil digging device, and unloading the rock soil in the barrel drill; and S7, the steps S5-S6 are repeated till rotary excavating is completed. The rotary drilling rig has the advantage of low noise during construction.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a noise reduction construction method for rotary piles. Background Art

[0002] The drilling tools of rotary drilling rigs are used to extract soil by rotating the drilling tools with a turntable, touching the limit device on the drill rod, and the vibration generated causes the slag (rock) soil in the drilling tools to fall. There are four main types of drilling tools for rotary drilling rigs on the market, namely double-bottom double-opening (single-opening) pick sand scoop, pick bucket drill, roller bucket drill and roller bucket drill. For plain fill, silty soil, sand layer and some strongly weathered mudstone, double-bottom double-opening (single-opening) pick sand scoop is used; for medium-weathered rock layers, the above-mentioned barrel drill is used depending on the hardness of the rock layer. All four types of drilling tools require extremely strong force to touch the drill rod, and the vibration generated to remove the slag (rock) soil will generate a lot of noise during construction, which has a great impact on the surrounding environment.

[0003] Since many projects are located in the central area of ​​the city with dense residential buildings nearby, the pile foundation of the planned buildings in the project is 800-1200mm cast-in-place piles. When the project started, the double-bottomed double-opening drill bit used generated a lot of noise, and residents continued to complain, which seriously affected the project construction progress.

[0004] Therefore, a method for reducing noise in a rotary pile is provided to address the deficiencies in the prior art. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a method for reducing noise in rotary bored pile construction, aiming to solve the problem of a large amount of noise generated by the pile head of the rotary bored pile.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for reducing noise in rotary pile construction, comprising the following steps:

[0008] S1: Rotary drilling: Use single / double-opening drilling tools and the rotary table of the rotary drilling rig to rotate the drilling tools to drill into the soil layer to extract soil;

[0009] S2: Push rod unloading: Use the hydraulic push rod to push the steel plate on the top of the drill bit to unload the soil residue in the drill bit into the steel bucket;

[0010] S3: Repeat steps S1-S2 until the rotary drilling reaches the strongly weathered mudstone layer;

[0011] S4: Replace drilling tools: When the rotary drilling rig reaches a harder rock formation, replace the single / double-opening drilling tool with a barrel drill;

[0012] S5: Rotary drilling: Use the rotary table of the rotary drilling rig to rotate the barrel drill along the previous drill hole to drill into the harder rock layer to extract rock and soil;

[0013] S6: unloading soil by the soil excavation device: pressing down the bucket drill to insert into the soil excavation device, unloading the rock and soil in the bucket drill;

[0014] S7: Repeat steps S5-S6 until rotary drilling is completed.

[0015] As a further improvement of the technical solution of the present invention, in step S1, the single / double-opening drilling tool is a double-opening (single-opening) pick sand scoop.

[0016] As a further improvement of the technical solution of the present invention, in step S2, after the rotary drilling is completed, the rotary drilling rig is driven to lift the drilling tool and move the drilling tool above the steel bucket.

[0017] As a further improvement of the technical solution of the present invention, in step S3, the single / double-opening drilling tool is rotary drilled from the plain fill, silty soil, and sand layer to the strongly weathered mudstone layer.

[0018] As a further improvement of the technical solution of the present invention, in step S4, when the rotary drilling rig is constructed to the medium-weathered rock layer or the slightly weathered rock layer, the drilling tool is replaced and different barrel drills are used depending on the geological conditions.

[0019] As a further improvement of the technical solution of the present invention, in step S6, after the rotary drilling is completed, the rotary drilling rig is driven to lift the barrel drill, the barrel drill is moved above the soil excavation device, the barrel drill is pressed down to insert into the soil excavation device, and the rock and soil in the barrel drill are removed.

[0020] As a further improvement of the technical solution of the present invention, in step S6, the soil excavation device includes stirrups and a plurality of vertical poles, the plurality of vertical poles are anchored into the soil layer and arranged in a circle, and the stirrups are spirally tied to the plurality of vertical poles.

[0021] As a further improvement of the technical solution of the present invention, the soil digging device also includes a plurality of tie bars, one end of which is fixedly connected to the vertical pole and the other end is anchored in the soil layer.

[0022] As a further improvement of the technical solution of the present invention, the depth of the vertical pole anchored in the soil layer is greater than 300 mm.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the rotary pile noise reduction construction method provided by the present invention, before the rotary pile is rotary-drilled to the medium-weathered rock layer, a single / double-opening drill is used, and the slag in the drill is unloaded into a steel bucket through a hydraulic push rod; after the rotary drilling reaches the medium-weathered rock layer, depending on the hardness of the rock layer, a barrel drill of different specifications is used in combination with a soil-digging device to unload the rock and soil in the barrel drill, and no noise is generated when unloading the soil, so as to avoid the drill touching the limit device on the drill rod to generate vibration and emit a lot of noise. The rotary pile noise reduction construction method of the present invention has the characteristic of low noise during the construction of the rotary drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0026] Figure 1 It is a structural schematic diagram of rotary drilling of rock and soil in the rotary pile noise reduction construction method of the present invention;

[0027] Figure 2 It is a structural schematic diagram of lifting the barrel drill in the rotary pile noise reduction construction method of the present invention;

[0028] Figure 3 It is a structural schematic diagram of a bucket drill inserted into a soil excavation device in the rotary pile noise reduction construction method of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of extracting the bucket drill to unload soil in the rotary pile noise reduction construction method of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the earth-digging device in the rotary pile noise reduction construction method of the present invention.

[0031] In the figure:

[0032] 1. Rotary drilling rig; 2. Soil layer; 3. Bucket drill; 4. Soil digging device; 41. Vertical pole; 42. Stirrups; 43. Tie bars. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0034] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0035] Reference Figures 1 to 5 , a rotary pile noise reduction construction method, comprising the following steps:

[0036] S1: Rotary drilling: Use single / double-opening drilling tools and the rotary table of the rotary drilling rig 1 to rotate the drilling tools to drill into the soil layer 2 to extract soil;

[0037] S2: Push rod unloading: Use the hydraulic push rod to push the steel plate on the top of the drill bit to unload the soil residue in the drill bit into the steel bucket;

[0038] S3: Repeat steps S1-S2 until the rotary drilling reaches the strongly weathered mudstone layer;

[0039] S4: Replace drilling tools: When the rotary drilling rig 1 reaches a relatively hard rock formation, the single / double-opening drilling tool is replaced with a barrel drill 3;

[0040] S5: rotary drilling: using the rotary table of the rotary drilling rig 1, the barrel drill 3 is rotated to drill into the harder rock layer along the previous drill hole to drill the rock and soil;

[0041] S6: unloading soil by the soil excavation device 4: pressing down the barrel drill 3 to insert into the soil excavation device 4, unloading the rock and soil in the barrel drill 3;

[0042] S7: Repeat steps S5-S6 until rotary drilling is completed.

[0043] Before the rotary drilling pile is drilled to the medium weathered rock layer, a single / double-opening drill is used, and the soil in the drill is unloaded into the steel bucket through a hydraulic push rod; after the rotary drilling reaches the medium weathered rock layer, depending on the hardness of the rock layer, a barrel drill 3 of different specifications is used in combination with a soil excavation device 4 to unload the rock and soil in the barrel drill 3, and no noise is generated when unloading the soil, so as to avoid the drill touching the limit device on the drill rod to generate vibration and emit a lot of noise. The rotary drilling pile noise reduction construction method of the present invention has the characteristic of low noise during the construction of the rotary drilling rig 1.

[0044] In one embodiment, in step S1, the single / double-opening drilling tool is a double-opening (single-opening) pick sand bucket. Preferably, the single / double-opening drilling tool has a diameter of 800 mm.

[0045] In one embodiment, in step S2, after the rotary drilling is completed, the rotary drilling rig 1 is driven to lift the drilling tool, move the drilling tool to the top of the steel bucket, and use the hydraulic push rod to push the steel plate on the top of the drilling tool to unload the soil residue in the drilling tool into the steel bucket. The unloaded soil residue will not pollute the ground, which is convenient for subsequent site cleaning and realizes the concept of green construction. During the hydraulic push rod soil extraction process, the rotary drilling rig 1 does not need to rotate the turntable to the limiter, and the soil residue in the drilling tool is unloaded by vibration, eliminating the noise generated during traditional soil unloading.

[0046] In one embodiment, in step S3, a single / double-opening drilling tool is used to drill from plain fill, silty soil, and sand layers to a strongly weathered mudstone layer.

[0047] In one embodiment, in step S4, when the rotary drilling rig 1 reaches the medium weathered rock layer and the slightly weathered rock layer, the drilling tool is replaced, and different barrel drills 3 are used depending on the geological conditions. Preferably, the soil layers 2 are plain fill, silty soil, sand layer, strongly weathered mudstone layer, medium weathered rock layer, and slightly weathered rock layer.

[0048] In one embodiment, in step S6, after the rotary drilling of rock and soil is completed, the rotary drilling rig 1 is driven to lift the barrel drill 3, the barrel drill 3 is moved above the soil excavation device 4, the barrel drill 3 is pressed down to insert into the soil excavation device 4, and the rock and soil in the barrel drill 3 are removed.

[0049] In one embodiment, in step S6, the soil-digging device 4 includes stirrups 42 and four vertical poles 41. After the four vertical poles 41 are anchored in the soil layer 2, they are arranged in a circle with a diameter of 600 mm. The stirrups 42 are spirally tied to the four vertical poles 41. In view of the problem that a single vertical pole is easy to fall, it is arranged in a circle to enhance stability. When encountering some hard points of rock and soil, the vertical pole is easy to be knocked down when the drill bit is pressed down. Preferably, the depth of the vertical pole 41 anchored in the soil layer 2 is greater than 300 mm, which increases the pull-out resistance of the soil-digging device 4 and prevents the device from being hit by the viscosity of the rock and soil in the drill bit or the impact. The vertical pole 41 adopts Φ48 steel flower pipe, and the vertical pole 41 is welded and fixed to the stirrup 42. The spacing between the stirrups 42 is ≤300 mm and ≤1 / 2d. Too large a spacing will lead to insufficient overall stability.

[0050] In one embodiment, the soil excavation device 4 further includes a plurality of tie rods 43 , one end of the tie rod 43 is fixedly connected to the vertical pole 41 , and the other end is anchored into the soil layer 2 for fixation.

[0051] For other contents of the rotary pile noise reduction construction method described in the present invention, please refer to the prior art and will not be repeated here.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A method for reducing noise in rotary pile construction, characterized in that: The following steps are involved: S1: Rotary drilling: Use single / double-opening drilling tools and the rotary table of the rotary drilling rig to rotate the drilling tools to drill into the soil layer to extract soil; S2: Push rod unloading: Use the hydraulic push rod to push the steel plate on the top of the drill bit to unload the soil residue in the drill bit into the steel bucket; S3: Repeat steps S1-S2 until the rotary drilling reaches the strongly weathered mudstone layer; S4: Replace drilling tools: When the rotary drilling rig reaches a harder rock formation, replace the single / double-opening drilling tool with a barrel drill; S5: Rotary drilling: Use the rotary table of the rotary drilling rig to rotate the barrel drill along the previous drill hole to drill into the harder rock layer to extract rock and soil; S6: unloading soil by the soil excavation device: pressing down the bucket drill to insert into the soil excavation device, unloading the rock and soil in the bucket drill; S7: Repeat steps S5-S6 until rotary drilling is completed.

2. A method for reducing noise in rotary pile construction according to claim 1, characterized in that: In step S1, the single / double-opening drilling tool is a double-opening (single-opening) pick sand scoop.

3. A method for reducing noise in rotary pile construction according to claim 1, characterized in that: In step S2, after the rotary drilling is completed, the rotary drilling rig is driven to lift the drilling tool and move the drilling tool above the steel bucket.

4. A method for reducing noise in rotary pile construction according to claim 1, characterized in that: In step S3, the single / double-opening drilling tool is rotary drilled from the plain fill, silty soil, and sand layer to the strongly weathered mudstone layer.

5. A method for reducing noise in rotary pile construction according to claim 1, characterized in that: In step S4, when the rotary drilling rig reaches the medium-weathered rock layer or the slightly weathered rock layer, the drilling tool is replaced and different barrel drills are used depending on the geological conditions.

6. A method for reducing noise in rotary pile construction according to claim 1, characterized in that: In step S6, after the rotary drilling is completed, the rotary drilling rig is driven to lift the barrel drill, the barrel drill is moved above the soil excavation device, the barrel drill is pressed down to insert into the soil excavation device, and the rock and soil in the barrel drill are removed.

7. A method for reducing noise in rotary pile construction according to claim 1, characterized in that: In step S6, the soil excavation device includes stirrups and a plurality of vertical poles. The plurality of vertical poles are anchored into the soil layer and arranged in a circle. The stirrups are spirally tied to the plurality of vertical poles.

8. A method for reducing noise in rotary pile construction according to claim 7, characterized in that: The soil digging device also includes a plurality of tie bars, one end of which is fixedly connected to the vertical pole and the other end of which is anchored in the soil layer.

9. A method for reducing noise in rotary pile construction according to claim 7, characterized in that: The depth of the vertical pole anchored in the soil layer is greater than 300 mm.

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