CN214994056U - Construction device for building to be striden in close range - Google Patents
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- CN214994056U CN214994056U CN202023051410.9U CN202023051410U CN214994056U CN 214994056 U CN214994056 U CN 214994056U CN 202023051410 U CN202023051410 U CN 202023051410U CN 214994056 U CN214994056 U CN 214994056U
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Abstract
The utility model discloses a closely stride construction equipment of building, including ground plane, electrical control equipment case, air compressor machine, cement pump, fixed column, pore-forming, porous pipe, mud pipe, pressure gauge, mud discharge mouth, pressure detection head, grout discharge port, filling reinforcement chamber, mud case, mud export, main air pipeline, suck-back pipeline, bolted connection hole, mud valve, pressure sensor line pipe, cut hole water pipeline, high pressure mud pipeline, reserve pipeline and suck-back air pipeline. The utility model has the advantages that: the MJS construction method regulates and controls the underground pressure by means of underground pressure monitoring and forced slurry discharge, can greatly reduce the disturbance of construction to the surrounding environment and ensure the effect of ultra-deep construction.
Description
Technical Field
The utility model relates to a closely stride building construction method, specifically be a closely stride construction equipment of building, belong to building construction technical field.
Background
The MJS construction process is originally applied to Japan, and the early development aims at being applied to the horizontal direction, so as to solve the problems of slurry discharge and influence on the environment in the rotary spraying construction, and can be applied to inclined and vertical construction after long-term development and application. The traditional MJS construction process can not realize forced slurry discharge in a hole and real-time monitoring of the underground pressure, and can not control the underground pressure by adjusting the slurry discharge amount, so that the deep sludge discharge and the reasonable control of the underground pressure are realized.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a construction device for building which is close to the building.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a construction device of a close-range up-spanning building comprises a foundation plane, an electric control equipment box, an air compressor, a cement pump, a fixing column, a pore-forming pipe, a perforated pipe, a mud discharge pipe, a pressure gauge, a mud discharge port, a pressure detection head, a cement slurry discharge port, a filling and reinforcing cavity, a mud box, a mud outlet, a main air pipeline, a reverse suction pipeline, a bolt connecting hole, a mud discharge valve, a pressure sensor pipeline pipe, a hole cutting water pipeline, a high-pressure mud pipeline, a standby pipeline and a reverse suction air pipeline; the foundation plane, the electric control equipment box, the air compressor and the cement pump form a main body structure of the construction device, the upper surface of the foundation plane is fixedly connected with the electric control equipment box, the electric control equipment box is internally provided with the air compressor and the cement pump, the outer side of the electric control equipment box is fixedly connected with a fixed column, the lower side of the foundation plane is provided with a pore-forming, the inside of the pore-forming is provided with a porous pipe, the upper side of the porous pipe is connected with the fixed column, the lower side of the porous pipe is provided with a mud discharge port, the lower side of the mud discharge port is provided with a pressure detection head arranged on the porous pipe, the upper end of the porous pipe is fixedly connected with a pressure gauge, the lower side of the porous pipe is also provided with a cement slurry discharge port, the lower side of the porous pipe is provided with a filling and reinforcing cavity, the opposite side of the foundation plane, which is arranged on the electric control equipment box, is provided with a slurry outlet, the multi-hole pipe is provided with a main air pipeline, a reverse suction pipeline, a bolt connecting hole, a mud discharging valve, a pressure sensor pipeline pipe, a hole cutting water pipeline, a high-pressure mud pipeline, a standby pipeline and a reverse suction air pipeline in a surrounding mode.
The MJS construction method construction sequence comprises the following steps:
step one, pile testing, namely adopting a three-section type pile testing test, thereby summarizing MJS construction parameters, MJS pile forming quality, influence settlement, convergence deformation, water leakage in the tunnel and other data on the tunnel during MJS construction.
And step two, reinforcing the foundation.
The MJS construction method for reinforcing the foundation comprises the following steps:
step one, measuring and lofting, wherein control points are arranged in a construction area by using a measuring instrument, and pile position lofting is carried out through the control points. And after the lofting is finished, the next procedure is performed after rechecking by a supervision engineer.
Drilling and leading holes, wherein holes need to be formed in advance in order to guarantee the construction period, and a drill bit of a leading hole machine needs to be provided with a three-blade drill bit and a diamond drill bit so as to break local obstacles; and (4) checking the verticality of the pile after drilling is finished, wherein the depth is more than the design depth m, the vertical error degree is less than/.
The MJS construction in the MJS construction method comprises the following steps:
the method comprises the steps of firstly, connecting a power supply, a data line, pipelines, a drill bit and an internal pressure monitoring display, and confirming that the drill bit is reset under the condition of no load, the pipeline connection ensures sealing, and no air exists in the pipeline.
And step two, checking the running condition of the equipment to ensure that the host, the high-pressure pump, the air compressor, the mortar stirring system, the MJS management device and the like can work normally, placing the host in place, and starting to zero after the stand is placed stably.
And step three, the drill rod is lowered, namely the drill rod is lowered to the designed depth in the guide hole, and if the drill rod is difficult to lower in the lowering process of the drill rod, the hole cutting water is opened to carry out normal hole cutting and drilling.
And step four, butting the drill rod and the drill bit, and carefully checking the sealing ring condition to see whether the sealing ring is lost or damaged and whether the underground pressure is normal or not during butting.
And step five, repeating the step three and the step four until the drill bit reaches the preset depth and the drill rod is in place.
And step six, after the drill bit reaches the preset depth, zero calibration is started, the 0 scale of the power head, the slurry discharge port and the white line on the drill rod are in the same straight line, then various technological parameters including a swing angle, a drawing speed, a revolution number and the like are set, and improvement is started after the technological parameters are set.
And seventhly, injecting at a fixed position, starting reverse suction water flow and reverse suction air, opening a mud discharging valve and starting a high-pressure cement pump and an air compressor when the mud discharging is confirmed to be normal. Firstly, water is sprayed upwards for 50cm under the pressure of 10MPa, then the water is switched into cement paste, and the drill rod is lowered to the right position again to start upward spraying improvement.
Step eight, when the high-pressure cement pump is started, the pressure cannot be too high, the pressure is gradually increased until the specified pressure is reached, and the lifting can not be started after the specified pressure is reached and the normal ground pressure is confirmed. When water is switched into cement paste, the pressure can rise automatically, and the pressure can be adjusted when the pressure changes suddenly.
And step nine, closely detecting the underground pressure during construction, and when the pressure is abnormal, adjusting the size of the slurry discharge valve in time to control the underground pressure to be within a safe range.
Step ten, after lifting a drill rod, disassembling the drill rod, switching cement slurry into water and then disassembling the drill rod, wherein when the pressure of the cement slurry pump tends to be downward, the water flow reaches the position of a cement slurry discharge port, and at the moment, the cement slurry pump and the air compressor are closed.
Step eleven, carefully checking the conditions of the sealing ring and the data line in the process of disassembling the drill rod to see whether the sealing ring and the data line are damaged or not, displaying whether the underground pressure is normal or not, if a problem exists, timely discharging the underground pressure to continue spraying, and timely washing and maintaining the drill rod after the drill rod is disassembled
Preferably, in order to facilitate the improvement to the connection stability of perforated pipe, prevent that perforated pipe from dropping in the work progress, the bolted connection hole is provided with four, and evenly distributed is around the bottom of perforated pipe.
Preferably, in order to improve the continuity of the slurry spraying process and prevent the blockage of the spraying due to the change of the internal air pressure, one main air pipeline is arranged, and two reverse suction air pipelines are arranged.
Preferably, in order to facilitate forced pulp discharge in the hole and real-time monitoring of the pressure in the ground, the output end of the pressure detection head is connected with the input end of the pressure gauge.
The utility model has the advantages that: the construction device for the short-distance up-spanning building is reasonable in design, four bolt connecting holes are formed, the four bolt connecting holes are uniformly distributed around the bottom of the perforated pipe, the connection stability of the perforated pipe is improved conveniently, the perforated pipe is prevented from falling off in the construction process, one main air pipeline is arranged, two inverted air pipelines are arranged, the continuity in the slurry injection process is improved conveniently, the problem that the diameter of the injection-blocked pile is large due to the change of internal air pressure is solved, the quality of the pile body is good, the influence on the surrounding environment is small, the ultra-deep construction is guaranteed, the MJS construction method can regulate and control the underground pressure through the means of monitoring the underground pressure and forcibly discharging slurry, the disturbance of construction on the surrounding environment can be greatly reduced, and the effect of ultra-deep construction is guaranteed.
Drawings
FIG. 1 is a schematic view of the MJS process of the present invention;
FIG. 2 is a cross-sectional view of the MJS high-pressure jet grouting pile of the present invention;
FIG. 3 is a schematic view of the planar structure of the perforated pipe of the present invention;
fig. 4 is a schematic view of the drilling device of the present invention.
In the figure: 1. the device comprises a foundation plane, 2, an electric control equipment box, 3, an air compressor, 4, a cement pump, 5, fixing columns, 6, a pore-forming device, 7, a perforated pipe, 8, a mud discharging pipe, 9, a pressure gauge, 10, a mud discharging port, 11, a pressure detecting head, 12, a cement paste discharging port, 13, a filling reinforcing cavity, 14, a mud box, 15, a mud outlet, 16, a main air pipeline, 17, a reverse suction pipeline, 18, a bolt connecting hole, 19, a mud discharging valve, 20, a pressure sensor pipeline, 21, a hole cutting pipeline, 22, a high-pressure mud pipeline, 23, standby pipelines 23 and 24 and a reverse suction air pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, a construction device for a short-distance up-span building comprises a foundation plane 1, an electric control equipment box 2, an air compressor 3, a cement pump 4, a fixing column 5, a hole 6, a porous pipe 7, a mud discharge pipe 8, a pressure gauge 9, a mud discharge port 10, a pressure detection head 11, a cement slurry discharge port 12, a filling and reinforcing cavity 13, a mud tank 14, a mud outlet 15, a main air pipeline 16, a reverse suction pipeline 17, a bolt connecting hole 18, a mud discharge valve 19, a pressure sensor pipeline 20, a hole cutting pipeline 21, a high-pressure mud pipeline 22, a standby pipeline 23 and a reverse suction pipeline 24; the construction device comprises a foundation plane 1, an electric control equipment box 2, an air compressor 3 and a cement pump 4, wherein the main structure of the construction device is formed by the foundation plane 1, the electric control equipment box 2 is fixedly connected on the upper surface of the foundation plane 1, the air compressor 3 and the cement pump 4 are arranged in the electric control equipment box 2, a fixing column 5 is fixedly connected on the outer side of the electric control equipment box 2, a pore 6 is arranged on the lower side of the foundation plane 1, a porous pipe 7 is arranged in the pore 6, the upper side of the porous pipe 7 is connected with the fixing column 5, a mud discharge port 10 is arranged on the lower side of the porous pipe 7, a pressure detection head 11 arranged on the porous pipe 7 is arranged on the lower side of the mud discharge port 10, a pressure gauge 9 is fixedly connected on the upper end of the porous pipe 7, a cement slurry discharge port 12 is further arranged on the lower side of the porous pipe 7, a filling and reinforcing cavity 13 is arranged on the lower side of the porous pipe 7, a mud tank 14 is arranged on the opposite side of the foundation plane 1 on the electric control equipment box 2, the mud tank 14 is provided with a mud outlet 15, and the porous pipe 7 is provided with a main air pipeline 16, a suck-back water pipeline 17, a bolt connecting hole 18, a mud discharge valve 19, a pressure sensor pipeline 20, a hole cutting water pipeline 21, a high-pressure mud pipeline 22, a standby pipeline 23 and a suck-back air pipeline 24 in a surrounding manner.
The MJS construction method construction sequence comprises the following steps:
step one, pile testing, namely adopting a three-section type pile testing test, thereby summarizing MJS construction parameters, MJS pile forming quality, influence settlement, convergence deformation, water leakage in the tunnel and other data on the tunnel during MJS construction.
And step two, reinforcing the foundation.
The MJS construction method for reinforcing the foundation comprises the following steps:
step one, measuring and lofting, wherein control points are arranged in a construction area by using a measuring instrument, and pile position lofting is carried out through the control points. And after the lofting is finished, the next procedure is performed after rechecking by a supervision engineer.
Drilling and leading holes, wherein holes need to be formed in advance in order to guarantee the construction period, and a drill bit of a leading hole machine needs to be provided with a three-blade drill bit and a diamond drill bit so as to break local obstacles, and because the hole forming quality has great influence on MJS construction, construction must be carried out according to technical parameters, and the error between a hole forming center and a pile position center is guaranteed to be less than 50 mm; and (4) the depth is more than 1m greater than the design depth, the vertical error degree is less than 1/100, and after drilling is finished, the perpendicularity of the pile is checked.
The MJS construction in the MJS construction method comprises the following steps:
the method comprises the steps of firstly, connecting a power supply, a data line, pipelines, a drill bit and an internal pressure monitoring display, and confirming that the drill bit is reset under the condition of no load, the pipeline connection ensures sealing, and no air exists in the pipeline.
And step two, checking the running condition of the equipment to ensure that the host, the high-pressure pump, the air compressor, the mortar stirring system, the MJS management device and the like can work normally, placing the host in place, and starting to zero after the stand is placed stably.
And step three, the drill rod is lowered, namely the drill rod is lowered to the designed depth in the guide hole, and if the drill rod is difficult to lower in the lowering process of the drill rod, the hole cutting water is opened to carry out normal hole cutting and drilling.
And step four, butting the drill rod and the drill bit, and carefully checking the sealing ring condition to see whether the sealing ring is lost or damaged and whether the underground pressure is normal or not during butting.
And step five, repeating the step three and the step four until the drill bit reaches the preset depth and the drill rod is in place.
And step six, after the drill bit reaches the preset depth, zero calibration is started, the 0 scale of the power head, the slurry discharge port and the white line on the drill rod are in the same straight line, then various technological parameters including a swing angle, a drawing speed, a revolution number and the like are set, and improvement is started after the technological parameters are set.
And seventhly, injecting at a fixed position, starting reverse suction water flow and reverse suction air, opening the sludge discharge valve 19 and starting the high-pressure sludge pump 4 and the air compressor 3 when the sludge discharge is confirmed to be normal. Firstly, water is sprayed upwards for 50cm under the pressure of 10MPa, then the water is switched into cement paste, and the drill rod is lowered to the right position again to start upward spraying improvement.
Step eight, when the high-pressure cement pump 4 is started, the pressure cannot be too high, the pressure is gradually increased until the specified pressure is reached, and the lifting can not be started after the specified pressure is reached and the normal ground pressure is confirmed. When water is switched into cement paste, the pressure can rise automatically, and the pressure can be adjusted when the pressure changes suddenly.
And step nine, closely detecting the underground pressure during construction, and when the pressure is abnormal, adjusting the size of the slurry discharge valve in time to control the underground pressure to be within a safe range.
Step ten, after lifting a drill rod, disassembling the drill rod, switching cement slurry into water and then disassembling the drill rod, and when the pressure of the cement slurry pump tends to be downward, indicating that the water flow reaches the position of the cement slurry discharge port 12, closing the cement slurry pump 4 and the air compressor 3.
Step eleven, carefully checking the conditions of the sealing ring and the data line in the process of disassembling the drill rod, judging whether the sealing ring and the data line are damaged or not, displaying whether the underground pressure is normal or not, if a problem exists, timely discharging the underground pressure, continuing spraying, and timely washing and maintaining the drill rod after the drill rod is disassembled.
The four bolt connecting holes 18 are uniformly distributed around the bottom of the perforated pipe 7, so that the connection stability of the perforated pipe 7 is improved, the perforated pipe 7 is prevented from falling off in the construction process, one main air pipeline 16 is arranged, and two inverted air pipelines 24 are arranged, so that the continuity in the slurry spraying process is improved, the spraying blockage caused by the change of internal air pressure is prevented, the output end of the pressure detection head 11 is connected with the input end of the pressure gauge 9, and the forced slurry discharging in the holes and the real-time monitoring of the underground pressure are facilitated.
The working principle is as follows: when the construction device of the short-distance up-spanning building is used, firstly, a test pile test is carried out to determine MJS construction parameters, then, a measuring instrument is adopted to arrange control points in a construction area, pile position lofting is carried out through the control points, then, hole drilling and hole guiding are carried out, the perpendicularity of a formed pile is checked after the hole drilling is finished, then, MJS construction can be carried out, zero calibration is started when a drill bit reaches a preset depth in the construction process, then, all process parameters are set, position injection is started, reverse water flow and reverse air are started, when the grout discharge is confirmed to be normal, a grout discharge valve 19 is opened, a high-pressure cement pump 4 and a main air compressor 3 are started, water is firstly injected upwards for 50cm under the pressure of 10MPa, then, water is switched into grout, the drill rod is put down again, then upward injection improvement is started, when the high-pressure cement pump 4 is started, the pressure cannot be too high and should be increased gradually, until reaching the appointed pressure, after reaching appointed pressure and confirming that the ground internal pressure is normal, can only begin to promote, detect the ground internal pressure closely during the construction, when pressure is abnormal, must in time adjust the ground internal pressure of arranging thick liquid valve size control within the safe range, after promoting a drilling rod, dismantle the drilling rod, need switch into the water rear to the grout and dismantle, when the pressure of cement stuff pump has the trend of descending, show that rivers have reached 12 positions of mud discharge port, close cement stuff pump 4 at this moment, main air, suck-back air and suck-back rivers can, adopt the MJS jet grouting pile to consolidate the peripheral region of cable tunnel after, the subway construction risk of upper portion has been reduced greatly.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A construction device for building spanning in a short distance is characterized in that: the device comprises a foundation plane (1), an electric control equipment box (2), an air compressor (3), a cement pump (4), a fixing column (5), a pore-forming pipe (6), a porous pipe (7), a mud discharging pipe (8), a pressure gauge (9), a mud discharging port (10), a pressure detecting head (11), a cement slurry discharging port (12), a filling and reinforcing cavity (13), a mud slurry box (14), a mud slurry outlet (15), a main air pipeline (16), a reverse suction pipeline (17), a bolt connecting hole (18), a mud discharging valve (19), a pressure sensor pipeline (20), a hole cutting water pipeline (21), a high-pressure mud pipeline (22), a standby pipeline (23) and a reverse suction air pipeline (24);
the foundation plane (1), the electric control equipment box (2), the air compressor (3) and the cement pump (4) form a main body structure of the construction device;
an electric control equipment box (2) is fixedly connected to the upper surface of the foundation plane (1), an air compressor (3) and a cement pump (4) are arranged in the electric control equipment box (2), fixing columns (5) are fixedly connected to the outer side of the electric control equipment box (2), a pore-forming hole (6) is formed in the lower side of the foundation plane (1), a porous pipe (7) is arranged inside the pore-forming hole (6), and the upper side of the porous pipe (7) is connected with the fixing columns (5);
a mud discharging port (10) is formed in the lower side of the porous pipe (7), a pressure detecting head (11) mounted on the porous pipe (7) is arranged on the lower side of the mud discharging port (10), a pressure gauge (9) is fixedly connected to the upper end of the porous pipe (7), a cement slurry discharging port (12) is further formed in the lower side of the porous pipe (7), a filling and reinforcing cavity (13) is formed in the lower side of the porous pipe (7), a mud box (14) is arranged on the opposite side, located on the electric control equipment box (2), of the foundation plane (1), and a mud outlet (15) is formed in the mud box (14);
the multi-hole pipe (7) is provided with a main air pipeline (16), a reverse suction pipeline (17), a bolt connecting hole (18), a mud discharge valve (19), a pressure sensor pipeline pipe (20), a hole cutting water pipeline (21), a high-pressure mud pipeline (22), a standby pipeline (23) and a reverse suction air pipeline (24) in a surrounding mode.
2. A construction apparatus for building spanning at a close distance according to claim 1, wherein: the number of the bolt connecting holes (18) is four, and the four bolt connecting holes are uniformly distributed around the bottom of the perforated pipe (7).
3. A construction apparatus for building crossing at close distance according to claim 1 or 2, wherein: one main air pipeline (16) is arranged, and two reverse suction air pipelines (24) are arranged.
4. A construction apparatus for building spanning at close range according to claim 3, wherein: the output end of the pressure detection head (11) is connected with the input end of the pressure gauge (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023051410.9U CN214994056U (en) | 2020-12-17 | 2020-12-17 | Construction device for building to be striden in close range |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023051410.9U CN214994056U (en) | 2020-12-17 | 2020-12-17 | Construction device for building to be striden in close range |
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| CN214994056U true CN214994056U (en) | 2021-12-03 |
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| CN202023051410.9U Active CN214994056U (en) | 2020-12-17 | 2020-12-17 | Construction device for building to be striden in close range |
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