Construction equipment for vertically reinforcing foundation soil body

Abstract

The utility model discloses construction equipment for vertically reinforcing foundation soil, which comprises a rack system, a stirring system, a curing material pumping system and a fiber material pumping system, the rack system is used for supporting and connecting the stirring system, the curing material pumping system and the fiber material pumping system, and a vibrator is mounted on the rack system; the stirring system comprises a plurality of drill rods and a plurality of groups of stirring rods which are correspondingly arranged, the plurality of groups of stirring rods are horizontally arranged in parallel, and each group of stirring rods is driven by one drill rod to rotate; the curing material pumping system and the fiber material pumping system are used for independently supplying materials into a stirring soil layer of the stirring system through a group of material conveying rods respectively. According to the construction equipment, even stirring of foundation soil within the width of several meters can be achieved through one-time up-down lifting, compared with a common stirring pile machine, the stirring efficiency and the overall construction efficiency are greatly improved, and vertical reinforcement can be efficiently achieved in a foundation soil body.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a construction device for vertically reinforcing foundation soil. Background Art

[0002] The cement mixing pile method is a common soft soil foundation reinforcement method. During construction, special mechanical equipment is used to force cement curing materials to be mixed into the soil in the vertical direction, and finally a reinforced pile body with integrity, water stability and high strength is formed. The reinforced pile body and the soil between the piles form a composite foundation. This method has high principle feasibility and mature market application, but the reinforcement efficiency is low, the reinforcement structure form is relatively simple, and the reinforcement effect needs to be improved. Commonly used cement mixing pile construction equipment is a single-axis or double-axis deep mixing pile machine. The single-axis deep mixing pile machine has only one drill rod, and the double-axis deep mixing pile machine has two drill rods with adjustable drill rod spacing. The lower part of the pile machine drill rod is equipped with a rotary blade and a spray port on the blade edge. During construction, the drill rod rotates to drill, and the rotary blade rotates to cut the soil, and the curing material sprayed from the spray port is forced to mix with the soil, and finally a reinforced pile body is formed. Since there are only one or two sets of rotating blades on the drill rod, the mixing efficiency is low and the mixing effect is poor. In order to ensure the reinforcement effect during the foundation reinforcement construction, there are requirements for the mixing speed and number of times. Generally, two spraying and two mixing are required, and special formations even require two spraying and four mixing. Single pile reinforcement takes a long time. Even if a double-axis mixing pile machine is used, the reinforcement efficiency still needs to be improved. The cement mixing pile method is used for foundation treatment. After construction, piles distributed at a certain distance are formed in the foundation. Each pile body is dispersed and independent of each other, without support connection, and the foundation integrity is poor. The pile body is a reinforcement body, but the soil between the pile bodies is still the original soft soil. Under long-term load, the soil settlement between the piles is large, and the pile body settlement is small. The pile body will penetrate the cushion layer, reducing the composite force effect of the composite foundation. When the cement mixing pile method is used to reinforce the soft soil foundation, in order to ensure the effect after reinforcement, the amount of cement curing material added is large, the total construction cost is high, and the economy is poor. Utility Model Content

[0003] In view of the above technical problems, the utility model proposes a construction equipment for vertically reinforcing foundation soil. The construction equipment can achieve uniform mixing of foundation soil within a width of several meters by lifting up and down once. Compared with ordinary mixing pile machines, the mixing efficiency and overall construction efficiency are greatly improved, and vertical reinforcement can be efficiently achieved in the foundation soil.

[0004] A construction device for vertically reinforcing foundation soil, comprising a frame system, a mixing system, a solidifying material pumping system, and a fiber material pumping system.

[0005] The frame system is used to support and connect the mixing system, the solidifying material pumping system and the fiber material pumping system, and a vibrator is installed on the frame system;

[0006] The stirring system comprises a plurality of drill rods and a plurality of correspondingly arranged groups of stirring rods, wherein the plurality of groups of stirring rods are arranged horizontally in parallel, and each group of stirring rods is driven to rotate by a drill rod;

[0007] The solidified material pumping system and the fiber material pumping system supply materials to the stirring soil layer of the stirring system through a group of feeding rods respectively.

[0008] As a preferred embodiment of the above technical solution, the frame system includes an upper positioning frame and a lower positioning frame, the upper positioning frame and the lower positioning frame are connected through the drill rod and the feed rod, the vibrator is installed inside the upper positioning frame, and the stirring rod is connected to the lower positioning frame through a bearing.

[0009] As a preferred embodiment of the above technical solution, the stirring system also includes a power motor, which drives the drill rod to rotate through a gear box. A transmission box is installed at the end of the drill rod. The drill rod drives the stirring rod to rotate through the transmission box. The stirring rod is evenly provided with stirring blades along its length and circumference.

[0010] As a preferred embodiment of the above technical solution, the solidifying material pumping system also includes an injection rod, which is connected to the lower positioning frame through a bearing, and injection holes are evenly arranged on the injection rod along the length direction, and the end of the feed rod of the solidifying material pumping system is connected to the injection rod.

[0011] As a preferred embodiment of the above technical solution, the fiber material pumping system also includes a spray rod, which is connected to the lower positioning frame through a bearing, and has injection holes evenly arranged along the length direction. The end of the feed rod of the fiber material pumping system is connected to the spray rod.

[0012] As a preferred embodiment of the above technical solution, the spray rod and the injection rod are arranged in parallel up and down and are arranged between the stirring rods.

[0013] As a preferred embodiment of the above technical solution, a winch and traction device is reserved on the top of the upper positioning frame.

[0014] The beneficial effects of the utility model are:

[0015] 1. The construction equipment is equipped with multiple groups of mixing rods distributed up and down. Each group of mixing rods is connected to each other and has a total length of several meters. Each group of adjacent mixing rods is relatively reversed. The mixing equipment can achieve uniform mixing of foundation soil within a width of several meters by lifting it up and down once. Compared with ordinary mixing pile machines, the mixing efficiency and overall construction efficiency are greatly improved, and vertical reinforcement can be efficiently achieved in the foundation soil.

[0016] 2. Equipped with a vibrator, turning on the vibrator during construction can not only improve construction efficiency, but also vibrate to compact and reinforce the soil and improve the reinforcement effect.

[0017] 3. The reinforced body formed by this construction equipment is mixed with fiber materials, has a reinforcement effect, good integrity, and coordinated to improve the stress of the foundation soil. Compared with the foundation reinforced by ordinary cement mixing pile method, on the premise of ensuring the same amount of solidifying material added, it can improve the bearing capacity of the reinforced foundation. On the premise of ensuring the same foundation bearing capacity, it can reduce the amount of solidifying material added and save engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] The accompanying drawings are marked as follows: 1-vibrator, 2-drill rod, 3-stirring rod, 4-feeding rod, 5-upper positioning frame, 6-lower positioning frame, 7-power motor, 8-gear box, 9-transmission box, 10-stirring blade, 11-injection rod, 12-injection hole, 13-spraying rod, 14-injection hole, 15-winch traction device. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 The construction equipment for vertically reinforcing foundation soil comprises a frame system, a mixing system, a solidifying material pumping system, and a fiber material pumping system.

[0022] The frame system is used to support and connect the stirring system, the solidifying material pumping system and the fiber material pumping system, and a vibrator 1 is installed on the frame system;

[0023] The stirring system comprises a plurality of drill rods 2 and a plurality of corresponding stirring rods 3, wherein the plurality of stirring rods 3 are arranged horizontally in parallel, and each stirring rod 3 is driven to rotate by a drill rod 2;

[0024] The solid material pumping system and the fiber material pumping system supply materials to the stirring soil layer of the stirring system through a group of feeding rods 4 respectively.

[0025] In this embodiment, the frame system includes an upper positioning frame 5 and a lower positioning frame 6, the upper positioning frame 5 and the lower positioning frame 6 are connected through the drill rod 2 and the feed rod 4, the vibrator 1 is installed inside the upper positioning frame 5, and the stirring rod 3 is connected to the lower positioning frame 6 through a bearing.

[0026] In this embodiment, the stirring system also includes a power motor 7, which drives the drill rod 2 to rotate through a gear box 8. A transmission box 9 is installed at the end of the drill rod 2. The drill rod 2 drives the stirring rod 3 to rotate through the transmission box 9. The stirring rod 3 is evenly provided with stirring blades 10 along its length and circumference.

[0027] In this embodiment, the solidifying material pumping system also includes an injection rod 11, which is connected to the lower positioning frame 6 through a bearing. Injection holes 12 are evenly arranged on the injection rod 11 along the length direction, and the end of the feed rod 4 of the solidifying material pumping system is connected to the injection rod 11.

[0028] In this embodiment, the fiber material pumping system also includes a spray rod 13, which is connected to the lower positioning frame 6 through a bearing. The spray rod 13 is evenly provided with spray holes 14 along the length direction, and the end of the feed rod 4 of the fiber material pumping system is connected to the spray rod 13.

[0029] In this embodiment, the spray rod 13 and the injection rod 11 are vertically arranged in parallel and disposed between the stirring rods 3 .

[0030] In this embodiment, a hoisting and traction device 15 is reserved on the top of the upper positioning frame 5 .

[0031] The working principle of this embodiment is as follows.

[0032] The equipment of this patent invention includes several main parts such as a frame system, a mixing system, a solidifying material pumping system, a fiber material pumping system, etc. The above components are controlled by an intelligent monitoring and control system.

[0033] The rack system can be driven and leveled by towers, hydraulic walking structures, winch structures and other equipment to control the lifting and lowering of the mixing system.

[0034] The mixing system is the main component. During construction, the mixing device moves up and down under the control of the winch system. The power of the power motor 7 is distributed to the two drill rods 2 through the gear box 8, so that the two drill rods 2 rotate in opposite directions with equal speed and torque to offset the torque effect on each other. The rotating drill rod 2 drives the stirring rod 3 to rotate through the transmission box 9. The stirring blade 10 on the stirring rod 3 realizes the cutting and stirring of the soil. At the same time, the feeding rod 4, the injection rod 11, and the spraying rod 13 continuously feed the solidified material slurry and fiber material transported from the background into the soil. The stirring blade 10 forces the solidified material slurry and fiber material to be stirred into the soil. The vibrator 1 realizes high-frequency vibration, which in turn drives the entire mixing device to vibrate. Turning on the vibrator 1 during construction can improve the mixing and drilling efficiency of the mixing device, and make the reinforced soil vibrate and compact, thereby improving the reinforcement effect.

[0035] The background control of the solidification material pumping system includes a solidification material slurry preparation tank, a pressure grouting pump, and a delivery pipeline. The solidification material slurry preparation tank is used to prepare a solidification material slurry of a specific ratio. The pressure grouting pump injects the solidification material slurry into the soil through the delivery pipeline, the feed rod 4, and the injection rod 11;

[0036] The background control of the fiber material pumping includes a storage tank, an air compressor, and a conveying pipeline. The storage tank is used to temporarily store the fiber material. There are spiral blades in the storage tank to stir and break up the fiber material and lift it up. The high-pressure gas generated by the air compressor sprays the fiber material in the storage tank into the soil through the conveying pipeline, the feed rod 4, and the spray rod 13.

[0037] The intelligent monitoring and control system includes a safety control system and a quality control system. The safety control system consists of a horizontal sensor distributed on the frame, a vertical sensor distributed on the tower, a data transmission line, and a display in the operation room. The safety control system mainly monitors and controls the horizontal structure of the frame and the verticality of the drill rod, and displays the monitoring results on the display. When the warning value set in advance is exceeded, the signal light of the display flashes to alarm and prompts to adjust the parameters; the quality control system consists of a displacement sensor distributed on the stirring device, a slurry specific gravity monitor on the solidifying material slurry preparation tank, a slurry pressure sensor and a slurry flow monitor on the pressure grouting pump, an air pressure sensor and a quality monitor on the storage tank, a side resistance sensor and an end resistance sensor distributed at the tip of the drill rod, a data transmission line, and an intelligent control display in the operation room. The quality control system mainly monitors and controls four aspects: first, monitors and records the drilling and lifting speed of the drill rod 2, and does a good job of construction speed control; second, monitors the proportion of the solidifying material slurry, the grouting pressure, and the grouting volume; third, monitors the air pressure and the quality of the fiber material sprayed; and fourth, records and feeds back the formation parameters when drilling down. The quality control system stores the data transmitted by the transmission line, analyzes it and makes an immediate response. According to the differences in the strata from top to bottom, it intelligently controls the drilling speed of the drill rod, the flow switch of the pressure grouting pump and the gas volume switch of the air compressor, and then adjusts the grouting volume and the quality of the injected fiber material. If a soft stratum is encountered, the drilling speed is appropriately slowed down to increase the grouting volume and the quality of the injected fiber material.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction device for vertically reinforcing foundation soil, characterized in that: Including rack system, mixing system, solidifying material pumping system, fiber material pumping system, The frame system is used to support and connect the mixing system, the solidifying material pumping system and the fiber material pumping system, and a vibrator is installed on the frame system; The stirring system comprises a plurality of drill rods and a plurality of correspondingly arranged groups of stirring rods, wherein the plurality of groups of stirring rods are arranged horizontally in parallel, and each group of stirring rods is driven to rotate by a drill rod; The solidified material pumping system and the fiber material pumping system supply materials to the stirring soil layer of the stirring system through a group of feeding rods respectively.

2. The construction equipment according to claim 1, characterized in that: The frame system comprises an upper positioning frame and a lower positioning frame, wherein the upper positioning frame and the lower positioning frame are connected through the drill rod and the feed rod, the vibrator is installed inside the upper positioning frame, and the stirring rod is connected to the lower positioning frame through a bearing.

3. The construction equipment according to claim 2, characterized in that: The stirring system also includes a power motor, which drives the drill rod to rotate through a gear box. The end of the drill rod is equipped with a transmission box. The drill rod drives the stirring rod to rotate through the transmission box. The stirring rod is evenly provided with stirring blades along its length and circumference.

4. The construction equipment according to claim 3, characterized in that: The solidified material pumping system also includes an injection rod, which is connected to the lower positioning frame through a bearing. Injection holes are evenly arranged on the injection rod along the length direction. The end of the feed rod of the solidified material pumping system is connected to the injection rod.

5. The construction equipment according to claim 4, characterized in that: The fiber material pumping system also includes a spraying rod, which is connected to the lower positioning frame through a bearing. The spraying rod is evenly provided with spray holes along the length direction. The end of the feed rod of the fiber material pumping system is connected to the spraying rod.

6. The construction equipment according to claim 5, characterized in that: The spray rod and the injection rod are arranged in parallel up and down and are arranged between the stirring rods.

7. The construction equipment according to claim 2, characterized in that: A winch traction device is reserved on the top of the upper positioning frame.

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