Integrated construction equipment and construction method for anti-floating anchor rod construction

Abstract

The invention discloses integrated construction equipment for anti-floating anchor rod construction and a construction method.The integrated construction equipment comprises a vehicle frame body, a high-pressure rotary spraying drilling machine and a hoisting device are arranged at the top of the vehicle frame body, the high-pressure rotary spraying drilling machine is provided with a drilling arm with a through hollow cavity, and the hoisting device is provided with anti-floating anchor rod reinforcing steel bars; after the drilling arm completes drilling, the anti-floating anchor reinforcing steel bar can stretch into the hollow cavity of the drilling arm through the hoisting device, and the construction method adopting the integrated construction equipment has the following technical advantages that firstly, the high-pressure jet grouting drilling machine and the hoisting device are integrated so that continuous construction can be conducted between different construction procedures, and the construction efficiency is greatly improved; 2, when the reinforcing steel bars are hoisted and placed, the drill arm with the hollow cavity is adopted to support the hole, so that the problem that the hole wall is not supported is solved, and the possible hole collapse problem is effectively prevented; and 3, the hoisting device is adopted to restrain the position of the anti-floating anchor rod steel bar in the hollow cavity, so that the construction quality of the anti-floating anchor rod is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-floating anchor rod construction, and in particular to integrated construction equipment and a construction method for anti-floating anchor rod construction. Background Art

[0002] Anti-floating anchor is a major measure for anti-floating measures of underground structures in construction projects. It is a tension rod buried deep in the rock and soil. It is fixed in the rock and soil below the foundation by high-pressure grouting and then anchored in the foundation. The mechanism of action is to provide pull-out resistance to the basement under the action of groundwater buoyancy. The traditional anti-floating anchor construction is to first determine the drilling position, then move the anchor drilling rig to drill the hole, pull out the drill rod after the drilling is completed, and then put the steel bar or anchor rod into the hole. At the same time, start to prepare cement mortar. After the anchor rod or steel bar is hoisted, use the grouting conduit to pour cement mortar into the hole. However, during the traditional anti-floating anchor construction, it is necessary to keep moving and replacing the construction equipment corresponding to the corresponding process according to different processes. There are difficulties in continuous construction between different construction processes, and a large amount of manual cooperation is required, which consumes a lot of labor; in addition, in the traditional anti-floating anchor construction, the drill rod needs to be removed before the anchor is installed, and in this process, it is easy to cause the hole to collapse, resulting in secondary drilling and cleaning, which consumes a lot of construction resources, reduces construction efficiency, and increases the construction period. In view of this, research and improvement are conducted on the existing problems. The present invention aims to provide an integrated construction equipment and construction method for anti-floating anchor construction to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0003] In order to overcome the technical problems described in the above-mentioned prior art, the purpose of the present invention is to provide an integrated construction equipment and construction method for anti-floating anchor construction.

[0004] In the first aspect, the present invention provides an integrated construction equipment for anti-floating anchor construction, including a frame body, a high-pressure rotary jet drilling rig and a lifting device are arranged on the top of the frame body, the high-pressure rotary jet drilling rig is equipped with a drill arm with a through hollow cavity, and the lifting device is equipped with anti-floating anchor steel bars, wherein, when the drill arm completes drilling, the anti-floating anchor steel bars can be extended into the hollow cavity of the drill arm through the lifting device.

[0005] As a preferred technical solution, a crawler walking mechanism is arranged at the bottom of the frame body, and a plurality of hydraulic leg mechanisms for auxiliary supporting the frame body are arranged on the side of the frame body.

[0006] As a preferred technical solution, the high-pressure rotary jet drilling rig includes a drilling mast arranged on the top of the frame body, and a hollow power assembly vertically slidably installed on the side of the drilling mast; wherein, a connecting arm is also arranged between the drilling mast and the frame body, the hollow power assembly is used to assemble the drill arm, and the lifting device is arranged on the top of the drilling mast.

[0007] As a preferred technical solution, the hoisting device includes a telescopic rod arranged on the top of the drilling rig mast, and the top of the telescopic rod is provided with a connecting piece integrating a plurality of steel cables to realize the hoisting of the anti-floating anchor steel bar.

[0008] As a preferred technical solution, the anti-floating steel bar anchor comprises three groups of sub-steels, and the three groups of sub-steels are connected by spot welding; wherein the anti-floating steel bar anchor is spot welded every 1.5 m in the length direction.

[0009] As a preferred technical solution, the integrated construction equipment further includes a dust suction device disposed on the frame body, and a dust suction duct of the dust suction device can extend into the hollow cavity of the drill arm.

[0010] As a preferred technical solution, after the anti-floating anchor reinforcement is inserted into the hollow cavity of the drill arm, a sufficient gap is reserved in the hollow cavity for an external grouting conduit to be inserted therein.

[0011] In a second aspect, based on the above-mentioned integrated construction equipment for anti-floating anchor construction, the present invention also provides a construction method, comprising the following steps:

[0012] Step 1: Lay out and position: Determine the drilling position according to the drilling design and move the frame body;

[0013] Step 2, vibration drilling: start the high-pressure jet drilling rig and perform drilling operations by rotating the drill arm;

[0014] Step 3: Hole cleaning: After drilling to the designed position, start the vacuuming device and extend the vacuuming tube into the hollow cavity of the drill arm to clean the debris and dust at the bottom of the hole;

[0015] Step 4, hoisting the steel bars: start the hoisting device to lift the anti-floating anchor steel bars to a certain position, manually extend the anti-floating anchor steel bars into the hollow cavity of the drill arm, and adjust the anti-floating anchor steel bars to make them coincide with the central axis of the hollow cavity;

[0016] Step 5, vibration grouting: After the anti-floating anchor reinforcement is firmly placed, extend the external grouting conduit into the hollow cavity of the drill arm, and stop grouting when the slurry emerges from the bottom plate of the hole foundation. While grouting, slowly pull out the drill arm;

[0017] Among them, move the frame body and repeat steps 2 to 5 to complete the construction of all anti-floating anchor rods.

[0018] As a preferred technical solution, the construction method also includes maintenance and testing after the grouting is completed.

[0019] As a preferred technical solution, the grouting material uses ordinary silicate PO42.5 cement with a water-cement ratio of 0.5-0.6, the grouting pressure is not less than 1.5MPa, and the grouting body strength is not less than 30MPa.

[0020] In summary, the present invention has the following technical effects:

[0021] The invention discloses an integrated construction equipment and a construction method for anti-floating anchor rod construction. The integrated construction equipment comprises a frame body, a high-pressure rotary jet drilling rig and a hoisting device are arranged on the top of the frame body, the high-pressure rotary jet drilling rig is arranged with a drill arm with a through hollow cavity, and the hoisting device is arranged with anti-floating anchor rod steel bars, wherein, after the drill arm completes drilling, the anti-floating anchor rod steel bars can be extended into the hollow cavity of the drill arm through the hoisting device, and the construction method using the integrated construction equipment has the following technical advantages: 1. The invention integrates the high-pressure rotary jet drilling rig and the hoisting device to enable continuous construction between different construction processes, effectively reducing the consumption of a large amount of manual labor, and greatly improving the construction efficiency; 2. The invention adopts the drill arm of the hollow cavity to support the hole when hanging the steel bar, which solves the problem of no support for the hole wall, and effectively prevents the hole wall from collapsing due to the immersion of rising groundwater, etc.; 3. The invention adopts a hoisting device to constrain the position of the anti-floating anchor rod steel bars in the hollow cavity, which solves the problem of the anchor rod being placed offset and not vertically in conventional construction, and effectively improves the quality of the anti-floating anchor rod construction. Therefore, compared with the existing anti-floating anchor construction technology, the integrated construction equipment and construction method for anti-floating anchor construction provided by the present invention have obvious technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a front view schematic diagram of an integrated construction device for anti-floating anchor construction according to an embodiment of the present invention;

[0024] Figure 2 It is a side view schematic diagram of an integrated construction device for anti-floating anchor construction according to an embodiment of the present invention;

[0025] Figure 3 1 is a schematic top view of an integrated construction device for anti-floating anchor construction according to an embodiment of the present invention;

[0026] The meanings of the reference numerals are as follows:

[0027] 1-frame body, 11-track walking mechanism, 12-hydraulic outrigger mechanism;

[0028] 2-high pressure jet drilling rig, 21-drilling rig mast, 22-hollow power assembly, 23-drilling arm, 231-hollow cavity, 24-connecting arm;

[0029] 3-lifting device, 31-telescopic rod, 32-connecting piece, 33-steel cable;

[0030] 4-Anti-floating anchor reinforcement;

[0031] 5-Dust suction duct;

[0032] 6- Grouting duct. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. The present embodiment described herein is only for illustrative purposes and is not intended to limit the scope of protection of the present invention. Therefore, it should be understood that various modifications and changes can be made to this embodiment without departing from the scope of protection of the present invention.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the term "and / or" includes any and all combinations of one or more associated listed items. Unless otherwise specified or explained, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Further, in the description of the present invention, it should be understood that the directional words described in the present embodiment are described at the angles shown in the accompanying drawings and should not be understood as limiting the present embodiment. It should also be understood that in the context, when it is mentioned that an element or feature is connected to another element (one or more), it can not only be directly connected to the other (one or more) elements, but also indirectly connected to the other (one or more) elements through an intermediate element.

[0036] Before introducing the technical solution of the present invention, it is necessary to explain the background of the invention. It is common that during the construction of traditional anti-floating anchor rods, it is necessary to constantly move and replace the construction equipment corresponding to the corresponding process according to different processes. The continuous construction between different construction processes is difficult, and a large number of manual work is required, which consumes a lot of labor; in addition, in the construction of traditional anti-floating anchor rods, the installation of the anchor rods requires the removal of the drill rod first, and in this process, it is easy to cause hole collapse and lead to secondary drilling and cleaning, which consumes a lot of construction resources, reduces construction efficiency, and increases the construction period. In order to overcome the technical problems of the above-mentioned prior art, the present invention aims to provide an integrated construction equipment and construction method for anti-floating anchor rod construction.

[0037] First, see Figures 1 to 3 An exemplary embodiment of the present invention first provides an integrated construction equipment for anti-floating anchor construction, the integrated construction equipment includes a frame body 1, a high-pressure rotary jet drilling rig 2 and a lifting device 3 are arranged on the top of the frame body 1, the high-pressure rotary jet drilling rig 2 is arranged with a drill arm 23 with a through hollow cavity 231, the lifting device 3 is arranged with anti-floating anchor steel bars 4, wherein, when the drill arm 23 completes drilling, the anti-floating anchor steel bars 4 can be extended into the hollow cavity 231 of the drill arm 23 through the lifting device 3. Specifically, the frame body 1 of the present invention integrates a high-pressure rotary jet drilling rig 2 and a lifting device 3, which is different from the traditional anti-floating anchor construction process of pulling out the drill arm 23 and then inserting the anchor after drilling, so that the two processes of vibration drilling and hanging steel bars can be carried out continuously. In some embodiments, the hollow cavity 231 of the drill arm 23 can also be used to connect an external dust suction device and extend the dust suction duct 5 into the hollow cavity 231 of the drill arm 23 to suck out the debris and dust at the bottom of the hole, which is equivalent to connecting the three processes of vibration drilling, hole cleaning and hanging steel bars in succession, so that the integrated construction equipment for anti-floating anchor construction of the present invention can effectively shorten the construction period, save manpower and material resources, and improve construction efficiency.

[0038] The above-mentioned integrated construction equipment is described below:

[0039] See also Figures 1 to 3 In some embodiments, a crawler walking mechanism 11 is disposed at the bottom of the frame body 1, and a plurality of hydraulic leg mechanisms 12 for auxiliary support of the frame body 1 are disposed on the side of the frame body 1. Specifically, the frame body 1 is equipped with a crawler walking mechanism 11 to achieve low-speed working and fast transfer functions, and solve the transportation requirements of the present invention, while the hydraulic leg mechanism 12 significantly enhances the stability of the frame body 1, effectively avoiding the risk of overturning of the frame body 1 during vibration drilling, thereby enhancing the safety of the use of this integrated construction equipment.

[0040] See also Figures 1 to 3In some embodiments, the high-pressure jet grouting drilling rig 2 includes a drilling rig mast 21 disposed on the top of the vehicle body 1, and a hollow power assembly 22 vertically slidably mounted on the side of the drilling rig mast 21; wherein, a connecting arm 24 is further disposed between the drilling rig mast 21 and the vehicle body 1, the hollow power assembly 22 is used to assemble the drilling arm 23, and the hoisting device 3 is disposed on the top of the drilling rig mast 21. Specifically, the drilling rig mast 21 is disposed on the top of the vehicle body 1, and a slider guide structure is disposed between the hollow power assembly 22 and the drilling rig mast 21, so that the hollow power assembly 22 equipped with the drilling arm 23 can be vertically slidably mounted on the side of the drilling rig mast 21, that is, the drilling arm 23 can be vertically displaced on the drilling rig mast 21; and further, the hoisting device 3 disposed on the top of the drilling rig mast 21 is used to accurately hoist the anti-floating anchor reinforcement 4 to the top of the hollow cavity 231 of the drilling arm 23.

[0041] It should be noted that the hoisting device 3 includes a telescopic rod 31 disposed at the top of the drilling rig mast 21, and a connector 32 with a plurality of steel cables 33 integrated therein is provided at the top of the telescopic rod 31 to realize the hoisting of the anti-floating anchor steel bar 4. Specifically, the telescopic rod 31 is disposed at the top of the drilling rig mast 21, and the anti-floating anchor steel bar 4 is first fixed by a plurality of steel cables 33 attached to the connector 32, and then the telescopic rod 31 drives the connector 32 and the fixed anti-floating anchor steel bar 4 to move vertically to the top of the hollow cavity 231 of the drill arm 23. After the vibration drilling is completed, the telescopic rod 31 drives the connector 32 and the anti-floating anchor steel bar 4 to move vertically to the hollow cavity 231 of the drill arm 23, so that the two processes of vibration drilling and hanging steel bars can be carried out continuously.

[0042] As a preferred technical solution, the anti-floating steel bar anchor includes three groups of sub-steels, and the three groups of sub-steels are connected by spot welding; wherein the anti-floating steel bar anchor is spot welded every 1.5m in the length direction. Specifically, the three groups of sub-steels are preferably hot-rolled ribbed steel bars, and the anti-floating steel bar anchor is spot welded every 1.5m in the length direction, that is, Φ8@1500 steel bars are spot welded to the rod body formed by the three groups of sub-steels.

[0043] As a preferred technical solution, please refer to Figures 1 to 3 The integrated construction equipment also includes a dust suction device configured on the frame body 1, and the dust suction duct 5 of the dust suction device can be extended into the hollow cavity 231 of the drill arm 23. Specifically, after drilling to the designed position, the dust suction device on the frame body 1 is started and the dust suction duct 5 is extended into the hollow cavity 231 of the drill arm 23 to clean the debris and dust at the bottom of the hole. For this reason, it is equivalent to the two processes of vibration drilling and hole cleaning being constructed in a coherent manner, and it avoids the traditional method of pulling out the drill arm 23 after drilling is completed and then cleaning the hole, and the dust suction duct 5 is easy to touch the hole wall and cause the risk of hole collapse.

[0044] As a preferred technical solution, please refer to Figures 1 to 3 In order to enable the vibration drilling and steel bar hanging processes to be carried out continuously, after the anti-floating anchor steel bar 4 is inserted into the hollow cavity 231 of the drill arm 23, the hollow cavity 231 reserves sufficient gap for the external grouting catheter 6 to extend into, that is, the grouting catheter 6 can be smoothly inserted into the hollow cavity 231 of the drill arm 23, so that grouting and the withdrawal of the drill arm 23 can be carried out simultaneously, which not only realizes continuous construction, but also prevents the hole from collapsing during grouting, effectively ensuring the quality of grouting construction.

[0045] In a second aspect, based on the above-mentioned integrated construction equipment for anti-floating anchor construction, the present invention also provides a construction method, comprising the following steps:

[0046] Step 1: Lay out and position: Determine the drilling position according to the drilling design and move the frame body 1;

[0047] Step 2, vibration drilling: start the high-pressure jet drilling machine 2, and perform drilling operation by rotating the drill arm 23;

[0048] Step 3, hole cleaning: after the hole is drilled to the designed position, the dust suction device is started and the dust suction pipe 5 is extended into the hollow cavity 231 of the drill arm 23 to suck out the debris and dust at the bottom of the hole; it should be noted that the drill arm 23 with the hollow cavity 231 solves the problem of the hole wall being unsupported, and effectively prevents the hole wall from collapsing due to the rising groundwater and the like;

[0049] Step 4, hoisting the steel bars: start the hoisting device 3 to lift the anti-floating anchor bar 4 to a certain position, manually extend the anti-floating anchor bar 4 into the hollow cavity 231 of the drill arm 23, and adjust the anti-floating anchor bar 4 to make it coincide with the central axis of the hollow cavity 231; it should be noted that the anti-floating anchor bar 4 is constrained by the hoisting device 3, which solves the problem of the anti-floating anchor bar 4 being offset and not placed vertically in conventional construction, and effectively improves the quality of the anti-floating anchor construction;

[0050] Step 5, vibration grouting: after the anti-floating anchor steel bar 4 is firmly placed, extend the external grouting conduit 6 into the hollow cavity 231 of the drill arm 23, and stop grouting when the slurry emerges from the bottom plate of the hole foundation, and slowly pull out the drill arm 23 while grouting; it should be noted that, as a preferred technical solution, the grouting material is ordinary silicate PO42.5 cement, the water-cement ratio is 0.5-0.6, the grouting pressure is not less than 1.5MPa, and the grouting body strength is not less than 30MPa.

[0051] In addition, the frame body 1 is moved, and steps 2 to 5 are repeated to complete the construction of all anti-floating anchor rods.

[0052] It should be noted that the construction method also includes maintenance and testing after the grouting is completed; among them, for maintenance: after the grouting is completed, the anchor position is covered with sack pieces, watered every day for maintenance, and the sack pieces are kept moist. Disturbance is strictly prohibited during the maintenance period, and the maintenance time is not less than 14 days; the present invention does not elaborate on the testing process and subsequent acceptance.

[0053] In summary, the construction method using this integrated construction equipment has the following technical advantages: 1. The present invention integrates a high-pressure rotary jet drilling rig and a hoisting device to enable continuous construction between different construction processes, effectively reducing the consumption of a large amount of manual labor and greatly improving construction efficiency; 2. The present invention uses a hollow cavity drill arm to support the hole when hanging steel bars, which solves the problem of no support on the hole wall and effectively prevents the hole wall from collapsing due to rising groundwater and the like; 3. The present invention uses a hoisting device to constrain the position of the anti-floating anchor steel bars in the hollow cavity, which solves the problem of offset and non-vertical placement of anchors in conventional construction, and effectively improves the quality of anti-floating anchor construction.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated construction equipment for anti-floating anchor construction, characterized in that: It comprises a vehicle frame body, the top of which is provided with a high-pressure jet grouting drill and a hoisting device, the high-pressure jet grouting drill is provided with a drill arm having a through hollow cavity, the hoisting device is provided with anti-floating anchor rods and steel bars, wherein, after the drill arm completes drilling, the anti-floating anchor rods and steel bars can extend into the hollow cavity of the drill arm through the hoisting device.

2. The integrated construction equipment for anti-floating anchor construction according to claim 1 is characterized in that: A crawler walking mechanism is arranged at the bottom of the frame body, and a plurality of hydraulic leg mechanisms for auxiliary supporting the frame body are arranged on the side of the frame body.

3. The integrated construction equipment for anti-floating anchor construction according to claim 2 is characterized in that: The high-pressure rotary jet drilling rig includes a drilling mast arranged on the top of the frame body, and a hollow power assembly vertically slidably installed on the side of the drilling mast; wherein a connecting arm is also arranged between the drilling mast and the frame body, the hollow power assembly is used to assemble the drilling arm, and the lifting device is arranged on the top of the drilling mast.

4. The integrated construction equipment for anti-floating anchor construction according to claim 3 is characterized in that: The hoisting device comprises a telescopic rod arranged at the top of the drilling rig mast, and a connecting piece integrating a plurality of steel cables is provided at the top of the telescopic rod to realize the hoisting of the anti-floating anchor rod reinforcement.

5. The integrated construction equipment for anti-floating anchor construction according to claim 4 is characterized in that: The anti-floating steel bar anchor rod comprises three groups of sub-steel bars, and the three groups of sub-steel bars are connected by spot welding; wherein the anti-floating steel bar anchor rod is spot welded every 1.5 m in the length direction.

6. The integrated construction equipment for anti-floating anchor construction according to claim 5, characterized in that: The integrated construction equipment further comprises a dust suction device arranged on the frame body, and a dust suction duct of the dust suction device can extend into the hollow cavity of the drill arm.

7. The integrated construction equipment for anti-floating anchor construction according to claim 6, characterized in that: After the anti-floating anchor reinforcement is inserted into the hollow cavity of the drill arm, a sufficient gap is reserved in the hollow cavity for an external grouting conduit to be inserted therein.

8. A construction method for the integrated construction equipment for anti-floating anchor construction based on any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Lay out and position: Determine the drilling position according to the drilling design and move the frame body; Step 2, vibration drilling: start the high-pressure jet drilling rig and perform drilling operations by rotating the drill arm; Step 3: Hole cleaning: After drilling to the designed position, start the vacuuming device and extend the vacuuming tube into the hollow cavity of the drill arm to clean the debris and dust at the bottom of the hole; Step 4, hoisting the steel bars: start the hoisting device to lift the anti-floating anchor steel bars to a certain position, manually extend the anti-floating anchor steel bars into the hollow cavity of the drill arm, and adjust the anti-floating anchor steel bars to make them coincide with the central axis of the hollow cavity; Step 5, vibration grouting: After the anti-floating anchor reinforcement is firmly placed, extend the external grouting conduit into the hollow cavity of the drill arm, and stop grouting when the slurry emerges from the bottom plate of the hole foundation. While grouting, slowly pull out the drill arm; Among them, move the frame body and repeat steps 2 to 5 to complete the construction of all anti-floating anchor rods.

9. The construction method according to claim 8, characterized in that: The construction method also includes maintenance and testing after the grouting is completed.

10. The construction method according to claim 8, characterized in that: The grouting material is ordinary silicate PO42.5 cement with a water-cement ratio of 0.5-0.6, the grouting pressure is not less than 1.5MPa, and the grouting body strength is not less than 30MPa.

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