CN210421090U - Middle-arranged inclined pile pressing machine - Google Patents
Middle-arranged inclined pile pressing machine Download PDFInfo
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- CN210421090U CN210421090U CN201920962707.9U CN201920962707U CN210421090U CN 210421090 U CN210421090 U CN 210421090U CN 201920962707 U CN201920962707 U CN 201920962707U CN 210421090 U CN210421090 U CN 210421090U
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Abstract
The utility model discloses a central inclined pile press, which comprises a support platform assembly and a crane assembly; the length direction of the supporting platform assembly is parallel to the direction of the working surface; the supporting platform assembly is provided with a luffing portal frame assembly, the portal frame assembly is arranged at the geometric center of the supporting platform assembly, the portal frame assembly is provided with a pile pressing oil cylinder, and the pile pressing oil cylinder is also connected with a pile clamping device assembly arranged on the portal frame assembly; the amplitude-variable portal frame assembly and the pile clamping device assembly swing back and forth in a direction parallel to a construction working surface within an inclination angle range of +/-30 degrees so as to adjust pile pressing angles of an inclined pile and a straight pile in the support pile; the portal frame assembly is matched with the supporting platform assembly, the long ship assembly and the short ship assembly through the rotating shaft and the variable amplitude oil cylinder on the outer side of the portal frame assembly, so that pile pressing construction of one or more groups of support piles is completed on one machine position, and construction operation of double rows of piles of front piles and rear piles is formed after the portal frame assembly is sequentially arranged.
Description
Technical Field
The utility model relates to a hydraulic pressure static pile driver technical field, in particular to well-arranged batter pile driver of double construction method is strutted to prefabricated batter pile that foundation ditch does not have support.
Background
The measures of soil retaining structure, underground water control, environmental protection and the like required for ensuring the safety and stability of the underground space formed by downward excavation of the ground during the construction of the underground structure are called foundation pit engineering. The foundation pit support is defined by the national industry standard of people's republic of China ' technical Specification for building foundation pit support ' JGJ120-2012 as follows: in order to protect the safety of the construction of the underground main body structure and the surrounding environment of the foundation pit, the foundation pit adopts the measures of temporary retaining, reinforcing, protecting and underground water controlling.
The foundation pit engineering is a system engineering integrating geological engineering, geotechnical engineering, structural engineering and geotechnical testing technology. The main content is as follows: engineering investigation, supporting structure design and construction, earth excavation and backfilling, underground water control, information construction, surrounding environment protection and the like. The simplest and most economical method for foundation pit construction is slope excavation, but the method is often limited by site conditions and the surrounding environment, so that a supporting system needs to be designed to ensure the smooth construction and better protect the surrounding environment.
Whether a supporting structure is adopted for foundation pit excavation or not, which supporting structure is adopted, is determined by comprehensive analysis and comparison of economy, technology and environment according to the surrounding environment of the foundation pit, the condition of an underground structure, the excavation depth of the foundation pit, the engineering geological and hydrogeological conditions, the construction season, the regional engineering experience and the like.
The foundation pit supporting structure system generally comprises two parts, namely a soil retaining structure and a precipitation and water stopping system. Pile and wall type supporting structures often adopt steel sheet piles, reinforced concrete sheet piles, column-column type cast-in-place piles, underground continuous walls and the like. According to the soil condition and the size of the foundation pit, the foundation pit can be designed to be cantilever type, inner support type or anchor type. The gravity type supporting structure mostly adopts a cement soil mixing pile retaining wall, a soil nailing wall and the like. When the supporting structure can not play the role of water stop, a water stop curtain can be arranged or precipitation outside the pit is adopted at the same time so as to achieve the purpose of controlling underground water, so that the foundation pit earthwork engineering can be excavated under the dry operation condition.
In the prior art, a Chinese patent with the patent application number of 201811411534.8 discloses an active bidirectional inclined row pile foundation pit supporting method, which comprises the following steps: 1) driving inwards inclined supporting piles inclined inwards and outwards inclined supporting piles inclined outwards into the pit along the inner side of the edge of the foundation pit in a staggered mode to reach the designed elevation of the pile bottom, and meanwhile arranging a waterproof curtain behind the outwards inclined supporting piles; 2) arranging a jack on the pile top of each inward-inclined supporting pile; 3) arranging crown beams which connect all the inward-inclined supporting piles and all the outward-inclined supporting piles into a whole on the bidirectional inclined row piles which are formed by all the inward-inclined supporting piles and all the outward-inclined supporting piles; 4) excavating the soil body surrounded by the inner-inclined supporting piles to the designed elevation of the pit bottom, and applying a control expansion force to the inner-inclined supporting piles by adopting the jack arranged in the step 2) in the excavating process or before the excavation so as to reduce the displacement of the soil body and the pile tops. The utility model discloses can reduce the pile bolck displacement at to a great extent, reduce pile body moment of flexure, reduce engineering cost, increase the excavation depth, reduce the foundation ditch and take place to topple the possibility of destruction.
The Chinese patent application with the patent application number of 201811411542.2 discloses an active X-shaped double-row pile foundation pit supporting method, which comprises the following steps: 1) driving a front row of vertical support piles into a pile bottom design elevation along the inner side of the edge of the foundation pit, driving a rear row of support piles inclined towards the pit into the pile bottom design elevation, and meanwhile, arranging a waterproof curtain behind the rear row of support piles; 2) arranging a jack on the pile top of each rear row of support piles; 3) crown beams are respectively arranged on the front row of vertical supporting piles and the rear row of supporting piles, and the front row of vertical supporting piles and the crown beams on the rear row of supporting piles are connected into a whole by adopting connecting beams; 4) excavating the soil body surrounded by the front row of vertical supporting piles and the rear row of supporting piles to the designed elevation of the pit bottom, and applying a control expansive force to the rear row of supporting piles by adopting a jack in the excavating process or before excavating so as to reduce the displacement of the soil body and the pile tops. The utility model discloses can reduce the pile bolck displacement at to a great extent, reduce pile body moment of flexure, reduce engineering cost, increase the excavation depth, reduce the foundation ditch and take place to topple the possibility of destruction.
The Chinese patent application with the patent application number of 201811411547.5 discloses an active inclined double-row pile foundation pit supporting method, which comprises the following steps: 1) driving front row support piles inclined towards the inside of the pit to a designed elevation of the pile bottom along the inner side of the edge of the foundation pit, driving rear row support piles inclined towards the outside of the pit to the designed elevation of the pile bottom, and meanwhile, arranging a waterproof curtain behind the rear row support piles; 2) arranging a jack on the pile top of each front row of support piles; 3) crown beams are respectively arranged on the front row of support piles and the rear row of support piles, and the crown beams on the front row of support piles and the rear row of support piles are connected into a whole by adopting connecting beams; 4) excavating the soil body surrounded by the front row of support piles to the designed elevation of the pit bottom, and applying a control expansion force to the front row of support piles by adopting the jack arranged in the step 2) in the excavating process or before excavating so as to reduce the displacement of the soil body and the pile tops. The utility model discloses can reduce the pile bolck displacement at to a great extent, reduce pile body moment of flexure, reduce engineering cost, increase the excavation depth, reduce the foundation ditch and take place to topple the possibility of destruction.
In the prior art, the jack is adopted to actively control the displacement of the double-row piles, so that the displacement of the pile top can be reduced, the ground deformation behind the piles is greatly reduced, the damage to the surrounding environment is avoided, meanwhile, the bending moment of the pile body can be reduced, the design strength of the pile body is reduced, and the excavation depth can be increased; the possibility of overturning damage of the foundation pit is greatly reduced due to the inclination of the excavation surface; the design requirement can be met only by using cantilever pile support, so that the design and construction are simpler and more convenient, and materials are saved.
The method has certain defects that the front row of piles and the rear row of piles are driven into the designed elevation of the pile bottom, jacks are respectively arranged on the inward-inclined supporting piles, the rear row of supporting piles and the front row of supporting piles, and then the supporting piles are connected into a whole by arranging crown beams, and then the jacks are used for applying controlled expansion force; the construction method has the advantages that the number of the supporting piles required to be constructed in the foundation pit construction site is large, so that the construction process of driving each supporting pile into the designed elevation of the pile bottom by adopting construction equipment in the foundation pit construction site is easy to consume too long construction time, and the construction period is prolonged; set up the jack and exert control expansive force to a fender pile, because the quantity that the fender pile and the jack of construction set up is many, though jack control circuit can be connected to site operation control center, can be through detecting soil body and pile bolck displacement, through jack control pile body displacement at any time, nevertheless monitoring and operation process consume manpower and materials, thereby the monitoring degree of difficulty is big and the skew that leads to a fender pile appears in soil body and pile bolck displacement easily.
The utility model discloses a chinese invention patent application cn201711200885.x that applicant filed discloses a variable amplitude hydraulic pile pressing device, including a pile pressing oil cylinder, a portal frame and a pile gripper, wherein the cylinder of the pile pressing oil cylinder is fixed on the portal frame, a radial telescopic pile gripping structure is arranged in the pile gripper, and two opposite side surfaces of the pile gripper are respectively provided with a guide part to be movably connected with a guide support at the inner side of the portal frame; the bottom of the portal frame is provided with a rotating base, the upper end of the rotating base is connected with the portal frame through a pin shaft A or a bolting mode, and the lower end of the rotating base is movably connected with the supporting platform through a pin shaft B to form a rotating structure; a luffing oil cylinder is arranged on the supporting platform, the cylinder body of the luffing oil cylinder is fixedly connected to the supporting platform, and the piston rod of the luffing oil cylinder is connected with the upper part of the portal frame to form a luffing type rotating structure for driving the portal frame to rotate around a pin B; the portal frame rotates around the pin shaft B back and forth to drive the pile pressing oil cylinder and the pile clamping device to swing back and forth, so that the inclined pile hydraulic pile pressing structure is formed. The construction method has the characteristics of convenience in construction, high construction efficiency, small environmental pollution, simple structure and the like.
In practical application, particularly in the process of multi-stage supporting construction operation of double-row piles, the applicant finds that the variable-amplitude hydraulic pile pressing device has the following defects:
1. because the portal frame and the pile clamping device are arranged at the front part of the supporting platform, the space for arranging the cylinder body of the variable-amplitude oil cylinder and the piston rod thereof on the supporting platform is limited, the variable-amplitude range of only one-stage oil cylinder is only +/-15 degrees, the stroke is short, the large inclination angle and the long stroke inclination of 20 degrees or more are difficult to realize, the application range is limited, and the pile pressing device is only suitable for pile pressing operation of the prefabricated support pile with small variable-amplitude inclination angle and short stroke; 2. because the integral gravity center of the pile press is also positioned at the front part of the supporting platform, the front part and the rear part of the supporting platform are stressed unevenly under the working state of pile press, and the front part is easy to cause local sinking under heavy pressure, thus influencing the integral stability and the piling precision of equipment; 3. because the portal frame and the pile clamping device are arranged at the front part of the supporting platform (namely, the side facing away from the crane and facing the working surface), the gravity center of the whole pile pressing machine is also positioned at the front part of the supporting platform in a non-pile pressing working state, the whole balance (the balance of the whole machine under dynamic state) is not easy to control in the process of moving the machine or shifting, the speed of moving the machine or shifting is influenced while the safety of the device is influenced, the time consumption of moving the machine is long, the energy consumption is high, the construction speed is low, the precision of the dip angle and the position of pressing the pile body is low, and the construction efficiency and the cost are influenced. Particularly, in large-scale engineering construction, the construction efficiency of pile pressing operation for multi-stage support piles is lower, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a double construction equipment is strutted to precast batter pile that foundation ditch does not have support to the above-mentioned shortcoming of prior art, it is to the foundation ditch fender pile construction characteristics that does not have horizontal support, with supporting platform length direction parallel with the operation face, through setting up the portal frame assembly in the geometric centre position of supporting platform assembly, its pressure stake machine holistic focus under non-pressure stake operating condition is in the middle part of supporting platform, it is balanced (by its complete machine under the developments) to control its whole balance easily in the process of moving the machine or shifting, improve its security performance when accelerating the speed of moving the machine or shifting;
the long ship assembly and the short ship assembly which are arranged in parallel with the axial lead of the long ship assembly are arranged on the supporting platform assembly, the short ship assembly moves to realize the left-and-right movement of the whole machine, the long ship assembly moves to realize the front-and-back movement of the whole machine, pile clamping devices swing back and forth to realize inclined pile construction of +/-30 degrees, pile pressing efficiency of the pile row without horizontal support is high, pile positioning precision is high, subsequent displacement and deformation of the pile are small, and construction time and energy are saved while construction precision is improved.
In order to achieve the above object, the utility model adopts the following technical scheme:
a middle-arranged inclined pile pressing machine comprises a supporting platform assembly and a crane assembly arranged on the supporting platform assembly; the length direction of the supporting platform assembly is parallel to the operation surface, namely the arrangement direction of the piles; the supporting platform assembly comprises a long ship assembly and a short ship assembly which are arranged in a crossed manner with the axial lead of the supporting platform assembly in the length direction; the supporting platform assembly is provided with a luffing portal frame assembly, the portal frame assembly is arranged at the geometric center of the supporting platform assembly, the portal frame assembly is provided with a pile pressing oil cylinder, and the pile pressing oil cylinder is also connected with a pile clamping device assembly arranged on the portal frame assembly; the amplitude-variable portal frame assembly and the pile clamping device assembly swing back and forth in a direction parallel to a construction working surface within an inclination angle range of +/-30 degrees so as to adjust pile pressing angles of an inclined pile and a straight pile in the support pile; the portal frame assembly completes pile pressing construction of one or more groups of support piles on one machine position through mutual matching action of the rotating shaft and the variable amplitude oil cylinder on the outer side of the portal frame assembly, the supporting platform assembly, the long ship assembly and the short ship assembly, and forms a front row pile and a rear row pile after being sequentially arranged, so that construction operation of multi-stage foundation pit support, active X-shaped double row piles, active bidirectional inclined row piles and active inclined double row piles is completed.
As a further improvement of the present invention, the portal frame assembly is further provided with an angle monitoring system, the angle monitoring system is electrically connected with a control processor of the central inclined pile pressing machine, when the central inclined pile pressing machine is started, the angle monitoring system is simultaneously started, and the angle monitoring system continuously monitors the pile pressing angle and the pile pressing path of the support pile; when monitoring that the pile pressing angle or the pile pressing path of the support pile deviates, the system immediately sends out an audible and visual alarm signal, and when exceeding the angle deviation allowable range, the central inclined pile pressing machine is immediately closed to stop pressing the pile and an alarm signal is sent to the control processor; the angle monitoring system generates an alarm signal to the control processor, and simultaneously drives the luffing cylinder on the portal frame assembly to adjust the portal frame assembly to return to a preset pile pressing construction angle and a construction path through the control processor; when the angle monitoring system detects that the supporting pile returns to the preset pile pressing angle and pile pressing path again, the control processor restarts the amplitude-variable hydraulic pile pressing oil cylinder to press the pile while stopping sending the alarm signal, and returns to the monitoring state.
As a further improvement, the supporting platform assembly is provided with a control processor, and the control processor is electrically connected with the angle monitoring system.
As a further improvement of the utility model, still include first counter weight bracket, the both sides of supporting platform assembly are provided with the one or more first counter weight bracket of symmetry respectively, be provided with first female joint on the supporting platform assembly, be provided with on the first counter weight bracket with the first male joint of the corresponding matching of first female joint, all be provided with the first fixed axle shaft hole that is used for through first fixed axle on first male joint and the first female joint, first male joint is connected fixedly through first fixed axle with first female joint.
As a further improvement of the utility model, the utility model further comprises a second counterweight bracket, the second counterweight bracket is arranged between the support platform assembly and the long ship assembly, one or more second female connectors are arranged on the upper and lower end faces of the two sides of the support platform assembly, a second male connector correspondingly matched with the second female connector is arranged on the second counterweight bracket, fixed shaft holes for passing through a second fixed shaft are arranged on the first male connector and the first female connector, and the first male connector and the first female connector are connected and fixed through the first fixed shaft; the second counterweight bracket is also provided with a hydraulic oil cylinder, the upper end of the long ship assembly is provided with a hydraulic oil cylinder fixing seat for fixing the hydraulic oil cylinder, and the lower end of the hydraulic oil cylinder is fixedly connected with the hydraulic oil cylinder fixing seat.
As a further improvement of the utility model, long ship assembly is including setting up respectively in the first long ship assembly and the long ship assembly of second of the symmetry matching of supporting platform assembly lower extreme both sides, first long ship assembly and the long ship assembly of second are all connected fixedly with the supporting platform assembly through setting up the second counter weight bracket.
As a further improvement, the both sides of the up end of the boatlift assembly all are provided with the hydraulic cylinder fixing base of symmetry, are provided with hydraulic cylinder on it, the boatlift assembly passes through hydraulic cylinder with supporting platform assembly interconnect is fixed.
As a further improvement of the utility model, the utility model also comprises a first counterweight beam, which is arranged on the first counterweight bracket and the second counterweight bracket on the same side, and a plurality of first counterweight beams are symmetrical all around by taking the supporting platform assembly as the center; it still includes second counter weight roof beam, second counter weight roof beam sets up on two adjacent second counter weight brackets, and a plurality of second counter weight roof beam is along supporting platform assembly bilateral symmetry.
Compared with the prior art have the advantages that:
1. the utility model discloses the prefabricated batter pile of foundation ditch unsupported supports double construction equipment, put formula batter pile press-in machine in, to the construction characteristics of no horizontal support foundation ditch campshed, carry out the redesign of portal frame assembly and put forward the complete set design method of slope fender pile, researched and developed the special static pile press-in machine of batter pile that can construct +/-30 put formula batter pile press-in machine in (only can construct +/-20 batter pile in the prior art); the length direction of a supporting platform is parallel to an operation surface, a portal frame assembly is arranged at the geometric center of the supporting platform assembly, the center of gravity of the whole pile pressing machine in a non-pile pressing working state is positioned in the middle of the supporting platform, the whole balance (the balance of the whole machine in a dynamic state) is easily controlled in the process of moving or shifting, and the safety performance of the pile pressing machine is improved while the speed of moving or shifting is increased; simultaneously because its focus is easily adjusted, can effectively improve in the pile pressing work progress and press stake efficiency, the inclination stability of reinforcing pile pressing, it is little to press stake construction error in succession, and can effectually keep the focus of construction in safe within range in the work progress, the condition of the focus skew is difficult for appearing, guarantees that the safety of construction goes on.
2. The utility model discloses a middle-arranged inclined pile press-in machine, the length direction of the supporting platform of the equipment is parallel to the working face, the short ship assembly moves the machine left and right, the long ship assembly moves back and forth, and the pile clamping device swings back and forth to clamp the pile; after the support piles are deployed to the working position of the working face, the construction of each group of support piles at the working position can be completed by adjusting the construction clearance through the matching of the short ship assembly and the long ship assembly, the speed of moving the machine is high, the time required by moving the machine is effectively shortened, the construction period is effectively shortened, and the construction time can be reduced by more than 30% compared with the construction time of the traditional construction mode and equipment; can directly adjust construction equipment through long ship assembly and short ship assembly, clearance and inclination error between each precast pile when can effectively guarantee to carry out continuous pile pressing are at the within range of regulation, and it is efficient, the precision is high to pile, and pile efficiency, precision all can improve more than 30%.
3. The utility model discloses put formula batter pile driver in, because its portal frame and pile holder set up in supporting platform's middle part, the space that its jar body that becomes the width of cloth hydro-cylinder and its piston rod set up on supporting platform obtains great extension, be equipped with the second grade hydro-cylinder, make it become the width of cloth scope enlarge to at + -30 °, the stroke is also synchronous increase, can realize the slope of + -20 and above big inclination and long stroke, its application scope has been extended, it is big to be suitable for to become the width of cloth inclination, the pile pressing operation of the longer prefabricated fender pile of stroke, especially, be suitable for the construction of heavy pile and pile cover in the large-scale engineering.
4. The utility model discloses put formula batter pile machine in, because the holistic focus of pile press also is in supporting platform's middle part, under pile press operating condition, supporting platform's front-back position atress is even, has avoided its front portion to lead to the part to sink down, can not influence the overall stability and the pile precision of equipment under heavily pressing, has also improved the security of construction.
5. The utility model discloses central inclined pile press machine, it is according to the adjustment to the quiet power pile pressing angle of front row supporting precast pile and back row supporting precast pile, can realize the double row supporting pile construction of modes such as vertical + slope combination double row supporting pile and slope + slope combination double row supporting pile, can realize not having the horizontal support construction in the depth range of 5m-10 m; the method can be applied to earth excavation in the foundation pit without the horizontal support and construction of the underground structure of the building, can save the construction period of construction and dismantling without the horizontal support in the prior construction technology, and can obviously shorten the construction period.
6. The middle-arranged inclined pile pressing machine adopts the prefabricated support pile to carry out double-row construction of supporting the prefabricated inclined pile without horizontal support of the foundation pit, and can realize quick construction of the inclined pile adopting the prefabricated support pile; underground pipe gallery can adopt prefabricated pipe gallery to assemble in the no horizontal support foundation ditch, realizes underground pipe gallery's quick construction.
To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic diagram of a construction arrangement of a first inclined pile double-row support pile;
FIG. 2 is a schematic diagram of a second construction arrangement of a double row of inclined piles;
FIG. 3 is a schematic view of the overall configuration of the central inclined pile driver of the present invention;
fig. 4 is a schematic view of the assembled structure of fig. 3.
In the drawings: 1. a crane assembly; 2. a first counterweight beam; 3. a second counterweight beam; 4. a first counterweight corbel; 5. a second counterweight bracket; 6. a long boat assembly; 7. a pony boat assembly; 8. a support platform assembly; 9. a gantry assembly; 10. a pile gripper assembly; A. supporting piles; a1, front row support piles; a2, rear row support piles.
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 the attached drawings 1-4, the central inclined pile press machine provided by the embodiment is used for supporting double-row construction of prefabricated inclined piles without horizontal support in a foundation pit, taking the construction of a first active bidirectional inclined row pile, namely an inclined pile double-row supporting pile as an example, an outer inclined pile A1 and an inner inclined pile A2 which are deep into a soil layer are arranged at the right side of a foundation B to form a front double-row inclined pile and a rear double-row inclined pile, and a foundation pit dug downwards is arranged at the right side of the foundation B to realize the construction without horizontal support of the foundation pit foundation. Wherein the inclination angle of the outer inclined pile A1 is + 20-30 degrees, and the inclination angle of the inner inclined pile A2 is-20-30 degrees.
A middle-positioned inclined pile pressing machine comprises a supporting platform assembly 8 and a crane assembly 1 arranged on the supporting platform assembly 8; the length direction of the supporting platform assembly 8 is parallel to the operation surface, namely the arrangement direction of the piles; the supporting platform assembly 8 comprises a long ship assembly 6 and a short ship assembly 7 which are arranged in a cross mode with the axial line of the supporting platform in the length direction; the supporting platform assembly 8 is provided with a luffing portal frame assembly 9, the portal frame assembly 9 is arranged at the geometric center of the supporting platform assembly 8, the portal frame assembly 9 is provided with a pile pressing oil cylinder, and the pile pressing oil cylinder is also connected with a pile clamping device assembly 10 arranged on the portal frame assembly 9; the amplitude-variable portal frame assembly 9 and the pile clamping device assembly 10 swing back and forth along the direction parallel to the construction working surface within the inclination angle range of 0 +/-30 degrees so as to adjust the pile pressing angles of the inclined pile and the straight pile in the support pile; the portal frame assembly 9 completes pile pressing construction of one or more groups of support piles on one machine position through the mutual matching action of the rotating shaft and the variable amplitude oil cylinder on the outer side of the portal frame assembly, the support platform assembly 8, the long ship assembly 6 and the short ship assembly 7, and forms a front row pile and a rear row pile after being sequentially arranged so as to complete construction operation of multi-stage foundation pit support, active X-shaped double-row piles, active bidirectional inclined row piles and active inclined double-row piles.
The gantry assembly 9 is also provided with an angle monitoring system, the angle monitoring system is electrically connected with a control processor of the central inclined pile pressing machine, the angle monitoring system is started when the central inclined pile pressing machine is started, and the angle monitoring system is used for continuously monitoring the pile pressing angle and the pile pressing path of the support pile; when monitoring that the pile pressing angle or the pile pressing path of the support pile deviates, the system immediately sends out an audible and visual alarm signal, and when exceeding the angle deviation allowable range, the central inclined pile pressing machine is immediately closed to stop pressing the pile and an alarm signal is sent to the control processor; the angle monitoring system generates an alarm signal to the control processor, and simultaneously drives the luffing cylinder on the portal frame assembly 9 through the control processor to adjust the portal frame assembly 9 to return to a preset pile pressing construction angle and a construction path; when the angle monitoring system detects that the supporting pile returns to the preset pile pressing angle and pile pressing path again, the control processor restarts the amplitude-variable hydraulic pile pressing oil cylinder to press the pile while stopping sending the alarm signal, and returns to the monitoring state.
In the central inclined pile driver in this embodiment, the support platform assembly 8 is provided with a control processor, and the control processor is electrically connected with the angle monitoring system.
The put formula batter pile machine in this embodiment still includes first counter weight bracket 4, the both sides of supporting platform assembly 8 are provided with the first counter weight bracket 4 of one or more of symmetry respectively, be provided with first female joint on the supporting platform assembly 8, be provided with on the first counter weight bracket 4 with the first male joint that first female joint is corresponding to be matchd, all be provided with the first fixed axle shaft hole that is used for through first fixed axle on first male joint and the first female joint, first male joint is connected fixedly through first fixed axle with first female joint.
The middle-positioned inclined pile press-in machine in the embodiment further comprises a second balance weight bracket 5, the second balance weight bracket 5 is arranged between the support platform assembly 8 and the long ship assembly 6, one or more second female connectors are arranged on the upper end face and the lower end face of each of the two sides of the support platform assembly 8, a second male connector correspondingly matched with the second female connector is arranged on the second balance weight bracket 5, fixed shaft holes for passing through a second fixed shaft are formed in the first male connector and the first female connector, and the first male connector and the first female connector are fixedly connected through the first fixed shaft; the second counterweight bracket 5 is further provided with a hydraulic oil cylinder, the upper end of the long ship assembly 6 is provided with a hydraulic oil cylinder fixing seat for fixing the hydraulic oil cylinder, and the lower end of the hydraulic oil cylinder is fixedly connected with the hydraulic oil cylinder fixing seat.
In the central oblique pile driver in this embodiment, the long ship assembly 6 includes a first long ship assembly and a second long ship assembly which are symmetrically matched and respectively disposed on two sides of the lower end of the supporting platform assembly 8, and the first long ship assembly and the second long ship assembly are both connected and fixed with the supporting platform assembly 8 by disposing the second counterweight bracket 5.
In the centrally-mounted oblique pile driver in this embodiment, the two sides of the upper end surface of the shot boat assembly 7 are both provided with symmetrical hydraulic cylinder fixing seats, hydraulic cylinders are arranged on the hydraulic cylinder fixing seats, and the shot boat assembly 7 is fixedly connected with the supporting platform assembly 8 through the hydraulic cylinders.
The central oblique pile pressing machine in the embodiment further comprises first counterweight beams 2, wherein the first counterweight beams 2 are arranged on the first counterweight bracket 4 and the second counterweight bracket 5 on the same side, and the first counterweight beams 2 are symmetrical front to back and left to right by taking the supporting platform assembly 8 as a center; it still includes second counter weight roof beam 3, second counter weight roof beam 3 sets up on two adjacent second counter weight brackets 5, and a plurality of second counter weight roof beam 5 is along 8 bilateral symmetry of supporting platform assembly.
The construction method of the middle-arranged inclined pile pressing machine comprises the following steps:
(1) at the foundation ditch job site, the length direction of supporting platform assembly 8 is parallel with the direction that the working face was arranged the row of piles promptly, sets up the central formula batter pile press-driver of a pair of row of pile construction, and this central formula batter pile press-driver includes: a supporting platform assembly 8 arranged in parallel with the axial lead in the length direction; the device comprises a long ship assembly 6 arranged in parallel with the axial lead of the long ship assembly and a short ship assembly 7 arranged perpendicular to the axial lead of the long ship assembly, wherein a luffing portal frame assembly 9 is arranged on a supporting platform assembly 8, the luffing portal frame assembly 9 is arranged at the geometric center of the supporting platform assembly 8, a pile pressing oil cylinder is arranged on the portal frame assembly 9, and the pile pressing oil cylinder is also connected with a pile clamping assembly 10 arranged on the portal frame assembly 9; the luffing portal frame assembly 9 and the pile gripper assembly 10 swing together in the front-back direction perpendicular to the construction working surface within the inclination angle range of +/-30 degrees (namely, 30 degrees of forward or backward deflection) with the vertical direction as a starting point (the inclination angle is 0 degrees) so as to adjust the pile pressing angles of the inclined pile and the straight pile in the support pile; each group of the unsupported precast inclined pile supported double-row piles at least comprises 2 support piles, namely an outer inclined pile A1+ an inner inclined pile A2, wherein A1 in each group are sequentially arranged to form a front row of support piles, and A2 is sequentially arranged to form a rear row of support piles;
(2) the pile pressing machine reaches a first machine position, a crane assembly 1 arranged on a supporting platform assembly 8 is started, a support pile A1 needing to be pressed into a foundation soil body is hoisted by controlling the crane assembly 1 and placed in a pile gripper assembly 10 of a portal frame assembly 9, and the support pile A1 is clamped and fixed by the pile gripper assembly 10 on the portal frame assembly 9;
(3) setting a pile pressing angle of an A1 support pile in an inclination angle range of + 20-30 degrees of the portal frame assembly 9, and fixing; starting a pile pressing oil cylinder, driving a pile clamping device assembly 10 connected with the pile pressing oil cylinder to press a pile downwards through the pile pressing oil cylinder, and pressing an A1 support pile into a foundation soil body through static force;
(4) when the A1 support pile is driven to a preset depth, the pile gripper assembly 10 is loosened, the fixed state between the pile gripper assembly 10 and the A1 support pile is released, and the whole machine moves forwards and backwards and shifts to the construction station position of the A2 support pile through the extension and retraction of a hydraulic mechanism on the long ship assembly 6;
(5) starting a crane assembly 1 arranged on a supporting platform assembly 8, hoisting a support pile A2 needing to be pressed into a foundation soil body by controlling the crane assembly 1, placing the support pile A2 into a pile gripper assembly 10 of a portal frame assembly 9, and clamping and fixing a support pile A2 by the pile gripper assembly 10 on the portal frame assembly 9;
(6) the gantry assembly 9 sets and fixes the pile pressing angle of the A2 support pile in the inclination angle range of-20 to-30 degrees; starting a pile pressing oil cylinder, driving a pile clamping device assembly 10 connected with the pile pressing oil cylinder to press piles downwards through the pile pressing oil cylinder, and pressing an A2 support pile into a foundation statically to form a front row pile and a rear row pile together with an A1 support pile to finish the construction of a group of support piles;
(7) after the construction of each group of supporting piles of the first machine position is completed in sequence, the pile press machine realizes the left-right direction movement of the whole machine and the displacement to the next machine position to complete the construction position of each group of supporting piles of the machine position through the extension and retraction of a hydraulic mechanism on a shot boat assembly 7 of a supporting platform assembly 8;
(8) and (5) repeating the steps (2) to (7), and pressing each group of support piles into the foundation respectively to finish pile pressing construction of each group of support piles of the support-free prefabricated support pile double-row construction of the whole foundation pit working surface or finish construction operation of multi-stage foundation pit support active type bidirectional inclined row piles.
In other embodiments, the construction operation of the active X-shaped double-row piles and the active inclined double-row piles can also be realized.
The method for the double-row construction of the supporting of the unsupported prefabricated inclined pile of the foundation pit by the central inclined pile pressing machine in the embodiment comprises the following steps of (1):
(11) the support platform assembly 8 of the central inclined pile press-in machine is provided with a long ship assembly 6, and when the press-in machine needs to be integrally transferred to a next working position, the front and back movement of the whole machine is realized through the extension and retraction of a hydraulic mechanism on the long ship assembly 6 of the support platform assembly 9;
(12) the left and right movement of the whole machine is realized through the extension and retraction of a hydraulic mechanism on a short ship assembly 7 of a supporting platform assembly 8 so as to complete the construction operation of a group of supporting piles on the working position;
(13) and (5) repeating the steps (11) and (12), continuously and integrally moving the pile press to a new working position, and performing the construction operation of the next group of support piles until the pile press construction operation of the whole row of support piles is completed.
Referring to fig. 2, the second double row pile is arranged as follows: the inner inclined pile A1 and the straight pile A2 form a pile, and the inclination angle of the inner inclined pile A1 is-20 to-30 degrees; the inclination angle of the vertical pile a2 is 0 °. The construction method and the construction equipment are basically the same as the embodiment 1, and the difference is that in each step, the portal frame assembly 9 sets and fixes the pile pressing angle of the A2 support pile in the inclination angle range of-20 to-30 degrees; the pile pressing angle of the A2 support pile is set and fixed in the inclination angle range of 0 degrees (namely, in a vertical state).
In short, the central inclined pile pressing machine mainly comprises the following steps: (1) arranging a middle-arranged inclined pile pressing machine; (2) the crane assembly lifts and fixes the support pile A1 to the pile gripper assembly; (3) setting an A1 supporting pile pressing inclination angle; the amplitude variation oil cylinder is used for amplitude variation of the portal frame assembly to a required angle; (4) the pile pressing oil cylinder presses the A1 support pile into the foundation statically; (5) the pile pressing oil cylinder presses the pile into the foundation to complete a single stroke, the pile clamping device assembly is loosened, the pile pressing oil cylinder retracts, and the clamping and pile pressing processes are repeated; (6) driving the long ship into a preset depth, loosening the pile clamping device assembly, and moving the long ship assembly back and forth to the next station; (7) the crane assembly lifts and fixes the support pile A2 to the pile gripper assembly; (8) setting an A2 supporting pile pressing angle; the pile pressing oil cylinder presses the A2 support piles into the foundation statically to form double rows of piles; (9) the short ship assembly moves left and right to the next station; (10) and (4) repeating the steps (2) to (9).
In other embodiments, it may also be applied to the outer inclined pile a1+ straight pile a 2; or X-shaped outer inclined piles A1+ inner inclined piles A2 and the like.
The middle-mounted inclined pile pressing machine for the foundation pit support-free prefabricated inclined pile support double-row construction method and the construction equipment in the embodiment has the design key points that:
1. in the middle-mounted inclined pile pressing machine in the embodiment, namely the double-row construction equipment for supporting the unsupported prefabricated inclined pile of the foundation pit, aiming at the construction characteristics of pile arrangement of the foundation pit without horizontal support, redesigning a portal frame assembly, providing a complete design method of an inclined support pile, and researching and developing a middle-mounted inclined pile pressing machine (capable of constructing inclined piles of +/-20 degrees in the prior art) of special static pile pressing equipment for constructing inclined piles of +/-30 degrees; the length direction of a supporting platform is parallel to an operation surface, a portal frame assembly is arranged at the geometric center of the supporting platform assembly, the center of gravity of the whole pile pressing machine in a non-pile pressing working state is positioned in the middle of the supporting platform, the whole balance (the balance of the whole machine in a dynamic state) is easily controlled in the process of moving or shifting, and the safety performance of the pile pressing machine is improved while the speed of moving or shifting is increased; simultaneously because its focus is easily adjusted, can effectively improve in the pile pressing work progress and press stake efficiency, the inclination stability of reinforcing pile pressing, it is little to press stake construction error in succession, and can effectually keep the focus of construction in safe within range in the work progress, the condition of the focus skew is difficult for appearing, guarantees that the safety of construction goes on.
2. In the middle-arranged inclined pile pressing machine in the embodiment, namely the double-row construction equipment for supporting the unsupported prefabricated inclined pile of the foundation pit, the length direction of a supporting platform of the equipment is parallel to the working surface, a short ship assembly moves a moving machine leftwards and rightwards, a long ship assembly moves forwards and backwards and moves, and a pile clamping device swings to clamp the pile forwards and backwards; after the support piles are deployed to the working position of the working face, the construction of each group of support piles at the working position can be completed by adjusting the construction clearance through the matching of the short ship assembly and the long ship assembly, the speed of moving the machine is high, the time required by moving the machine is effectively shortened, and the construction period is effectively shortened; the construction equipment can be directly adjusted through the long ship assembly and the short ship assembly, the gaps among the precast piles and the inclination errors can be effectively guaranteed to be within the specified range during continuous pile pressing, and the pile driving efficiency and the precision are high.
3. In the central inclined pile pressing machine in the embodiment, the portal frame and the pile clamping device are arranged in the middle of the supporting platform, the space of the cylinder body of the variable-amplitude oil cylinder and the piston rod of the variable-amplitude oil cylinder on the supporting platform is greatly expanded, the two-stage oil cylinder is arranged, the variable-amplitude range of the variable-amplitude oil cylinder is expanded to 0 +/-30 degrees, the stroke is synchronously increased, the large inclination angle and the long stroke inclination of +/-20 degrees or more can be realized, the application range of the variable-amplitude inclined pile pressing machine is expanded, and the variable-amplitude inclined pile pressing machine is suitable for pile pressing operation of prefabricated support piles with large.
4. In the central inclined pile pressing machine in the embodiment, because the center of gravity of the whole pressing machine is also positioned in the middle of the supporting platform, the front part and the rear part of the supporting platform are uniformly stressed in a pile pressing working state, the front part is prevented from sinking partially under heavy pressure, the integral stability and the pile driving precision of equipment cannot be influenced, and the construction safety is also improved.
5. According to the middle-mounted inclined pile pressing machine in the embodiment, the double-row supporting pile construction in the modes of vertical and inclined combined double-row supporting piles, inclined and inclined combined double-row supporting piles and the like can be realized according to the adjustment of the static pile pressing angle of the front row supporting precast pile and the rear row supporting precast pile, and the non-horizontal supporting construction can be realized within the depth range of 5m-10 m; the method can be applied to earth excavation in the foundation pit without the horizontal support and construction of the underground structure of the building, can save the construction period of construction and dismantling without the horizontal support in the prior construction technology, and can obviously shorten the construction period.
6. In the middle-arranged inclined pile pressing machine in the embodiment, the prefabricated support piles are adopted for carrying out double-row construction of supporting the prefabricated inclined piles without horizontal support in the foundation pit, so that the rapid construction of the inclined piles adopting the prefabricated support piles can be realized; the utility model discloses an underground pipe gallery in the foundation ditch is supported to no level can adopt prefabricated pipe gallery to assemble, realizes underground pipe gallery's quick construction.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (8)
1. A middle-arranged inclined pile pressing machine is characterized by comprising a supporting platform assembly and a crane assembly arranged on the supporting platform assembly; the length direction of the supporting platform assembly is parallel to the operation surface, namely the arrangement direction of the piles; the supporting platform assembly comprises a long ship assembly and a short ship assembly which are arranged in a crossed manner with the axial lead of the supporting platform assembly in the length direction; the supporting platform assembly is provided with a luffing portal frame assembly, the portal frame assembly is arranged at the geometric center of the supporting platform assembly, the portal frame assembly is provided with a pile pressing oil cylinder, and the pile pressing oil cylinder is also connected with a pile clamping device assembly arranged on the portal frame assembly; the amplitude-variable portal frame assembly and the pile clamping device assembly swing back and forth in a direction parallel to a construction working surface within an inclination angle range of +/-30 degrees so as to adjust pile pressing angles of an inclined pile and a straight pile in the support pile; the portal frame assembly completes pile pressing construction of one or more groups of support piles on one machine position through mutual matching action of the rotating shaft and the variable amplitude oil cylinder on the outer side of the portal frame assembly, the supporting platform assembly, the long ship assembly and the short ship assembly, and forms a front row pile and a rear row pile after being sequentially arranged, so that construction operation of multi-stage foundation pit support, active X-shaped double row piles, active bidirectional inclined row piles and active inclined double row piles is completed.
2. The central inclined pile driver as claimed in claim 1, wherein an angle monitoring system is further installed on the gantry assembly, the angle monitoring system is electrically connected to the control processor of the central inclined pile driver, and when the central inclined pile driver is started, the angle monitoring system is started simultaneously, and the angle monitoring system continuously monitors the pile driving angle and the pile driving path of the support pile; when monitoring that the pile pressing angle or the pile pressing path of the support pile deviates, the system immediately sends out an audible and visual alarm signal, and when exceeding the angle deviation allowable range, the central inclined pile pressing machine is immediately closed to stop pressing the pile and an alarm signal is sent to the control processor; the angle monitoring system generates an alarm signal to the control processor, and simultaneously drives the luffing cylinder on the portal frame assembly to adjust the portal frame assembly to return to a preset pile pressing construction angle and a construction path through the control processor; when the angle monitoring system detects that the supporting pile returns to the preset pile pressing angle and pile pressing path again, the control processor restarts the amplitude-variable hydraulic pile pressing oil cylinder to press the pile while stopping sending the alarm signal, and returns to the monitoring state.
3. The central oblique pile driver as claimed in claim 1, wherein a control processor is disposed on the support platform assembly, and the control processor is electrically connected to the angle monitoring system.
4. The central oblique pile driver according to claim 1, further comprising a first counter weight bracket, wherein one or more first counter weight brackets are symmetrically disposed on each of two sides of the support platform assembly, the support platform assembly is provided with a first female joint, the first counter weight bracket is provided with a first male joint correspondingly matched with the first female joint, the first male joint and the first female joint are both provided with a first fixed shaft hole for passing through a first fixed shaft, and the first male joint and the first female joint are fixedly connected through the first fixed shaft.
5. The central oblique pile driver according to claim 4, further comprising a second counterweight bracket, wherein the second counterweight bracket is disposed between the support platform assembly and the long ship assembly, one or more second female connectors are disposed on upper and lower end surfaces of both sides of the support platform assembly, a second male connector corresponding to the second female connector is disposed on the second counterweight bracket, a fixed shaft hole for passing a second fixed shaft is disposed on each of the first male connector and the first female connector, and the first male connector and the first female connector are connected and fixed by the first fixed shaft; the second counterweight bracket is also provided with a hydraulic oil cylinder, the upper end of the long ship assembly is provided with a hydraulic oil cylinder fixing seat for fixing the hydraulic oil cylinder, and the lower end of the hydraulic oil cylinder is fixedly connected with the hydraulic oil cylinder fixing seat.
6. The central oblique pile driver as claimed in claim 1, wherein the long ship assembly comprises a first long ship assembly and a second long ship assembly which are symmetrically matched and respectively arranged at two sides of the lower end of the supporting platform assembly, and the first long ship assembly and the second long ship assembly are fixedly connected with the supporting platform assembly by arranging a second counterweight bracket.
7. The central oblique pile driver as claimed in claim 1, wherein the two sides of the upper end face of the boatlift assembly are provided with symmetrical hydraulic cylinder fixing seats on which hydraulic cylinders are arranged, and the boatlift assembly is connected and fixed with the support platform assembly through the hydraulic cylinders.
8. The central oblique pile driver according to claim 1, further comprising first counterweight beams, said first counterweight beams being disposed on the first counterweight bracket and the second counterweight bracket on the same side, said first counterweight beams being symmetrical front to back and left to right about the support platform assembly; it still includes second counter weight roof beam, second counter weight roof beam sets up on two adjacent second counter weight brackets, and a plurality of second counter weight roof beam is along supporting platform assembly bilateral symmetry.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110735433A (en) * | 2019-06-25 | 2020-01-31 | 广东力源液压机械有限公司 | double-row construction method and construction equipment for unsupported precast inclined pile support of foundation pit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110735433A (en) * | 2019-06-25 | 2020-01-31 | 广东力源液压机械有限公司 | double-row construction method and construction equipment for unsupported precast inclined pile support of foundation pit |
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