CN113389228A - Pile side transverse static load loading device - Google Patents
Pile side transverse static load loading device Download PDFInfo
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- CN113389228A CN113389228A CN202110590027.0A CN202110590027A CN113389228A CN 113389228 A CN113389228 A CN 113389228A CN 202110590027 A CN202110590027 A CN 202110590027A CN 113389228 A CN113389228 A CN 113389228A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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Abstract
The invention relates to the field of pile body loading, in particular to a pile side transverse static load loading device. The jack system comprises a jack system, the jack system comprises a jack main body, and further comprises a liftable jack trolley, a loading jack fixing system and a loading system, wherein the jack system is installed on the liftable jack trolley through the loading jack fixing system, the loading system is installed on the loading jack fixing system, and the loading system is a pressure-to-pressure loading system and/or a tension-to-tension loading system. The device has simple structure and convenient installation and operation, can finish transverse loading and in-situ test under different pile diameters, different tonnages and different precisions, and is convenient to realize the simulation test of in-situ transverse loading of the pile body.
Description
Technical Field
The invention relates to the field of pile body loading, in particular to a pile side transverse static load loading device.
Background
With the continuous development of underground engineering towards large-scale and deep excavation, pile foundations are widely applied to subways, foundation pits and even roadbed engineering. The in-situ static load test is the most intuitive and convenient means for analyzing the bearing capacity of the pile foundation and is also an important reference index for the acceptance engineering of each stage of the engineering. The static load test result is also more important in the areas with poor geological conditions, deeper bedrock and coastal areas. The transverse static load test is used as an important test for testing the transverse bearing capacity of the pile body, and the practicability of the matched experimental instrument needs to be improved.
The existing in-situ transverse static load test instrument mainly has two development directions, one is to use a simple jack to carry out loading test, and simplify the scheme as much as possible on the basis of ensuring the reliability of data so as to achieve the main purposes of reducing budget and simplifying the process; secondly, a complex servo loading system is taken as a main part, so that the accuracy and the accuracy are ensured, the manufacturing cost is increased, and the convenience is reduced. However, both the problems of difficult equipment transportation and installation, difficult replacement of the precision of the loading jack, incapability of adapting to various pile diameters (the common pile diameter is 150-1000mm, etc.), additional arrangement and installation of a test instrument, and the like exist. In view of the above situation, a set of pile body in-situ transverse static loading equipment which is convenient to assemble and transport according to test requirements and has an adjustable loading range needs to be developed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a pile side transverse static load loading device which is simple in structure and convenient to install and operate, can complete transverse loading and in-situ tests under different pile diameters, different tonnages and different precisions, and is convenient to realize the in-situ transverse loaded simulation test of a pile body.
The technical scheme of the invention is as follows: a pile side transverse static load loading device comprises a jack system, wherein the jack system comprises a jack main body, a liftable jack trolley, a loading jack fixing system and a loading system, the jack system is installed on the liftable jack trolley through the loading jack fixing system, the loading system is installed on the loading jack fixing system, and the loading system is a counter-pressure loading system and/or a counter-pull loading system;
the liftable jack trolley comprises a bearing table, a fixed tray and a bearing table lifting system, wherein two parallel sliding grooves are formed in the bearing table, the fixed tray is arranged in the sliding grooves through a tray fixing plate, and the bottom of the fixed tray is connected with the tray fixing plate through screws and nuts;
the loading jack fixing system comprises connecting discs positioned at the outer sides of two ends of the jack main body and a plurality of telescopic fixing arms connected with the two connecting discs, and the connecting discs are fixedly connected with the end part of the jack main body;
the opposite-pressure loading system comprises opposite-pressure arm connecting discs, opposite-pressure loading arms, a pile body pushing arm and a pushing arm connecting disc, the opposite-pressure arm connecting discs are fixedly connected with the outer side wall surfaces of the connecting discs, the pushing arm connecting discs are arranged on the outer sides of the opposite-pressure arm connecting discs in parallel, the opposite-pressure arm connecting discs and the pushing arm connecting discs are fixedly connected through the opposite-pressure loading arms, the centers of the outer side wall surfaces of the pushing arm connecting discs are connected with the pile body pushing arms through one-way movable fixers, and the pile body pushing arms rotate in the vertical direction;
the opposite-pulling loading system comprises opposite-pulling loading arms, a pulling arm fixing part, a pulling arm and opposite-pulling arm connecting discs, wherein the opposite-pulling arm connecting discs are fixedly connected with the outer side wall surfaces of the two connecting discs, each opposite-pulling loading arm is in a frame shape, one side frame edge of each opposite-pulling loading arm is fixedly connected with the outer side surface of the corresponding pulling arm connecting disc at one side, the other side frame edge of each opposite-pulling loading arm is positioned on the outer side of the corresponding pulling arm connecting disc at the other side, the side frame edge is connected with the pulling arm through the pulling arm fixing part, the pulling arm fixing part is rotatably arranged on the frame edge of each opposite-pulling loading arm, the pulling arm rotates along the vertical direction, and the pulling arm is an in-pile pulling arm or an out-pile pulling ring.
The jack system also comprises a jack cylinder and a motor, wherein the jack main body is connected with the jack cylinder through a connecting wire and is placed on the liftable jack trolley.
The bearing platform passes through bearing platform operating system and supports in ground, and bearing platform operating system includes connecting rod elevating system and bottom frame, and the bottom frame of connecting rod mechanism are connected, and the bottom fixed surface of the top of connecting rod mechanism and bearing platform is connected, and connecting rod elevating system includes several connecting rods along vertical direction end to end connection, and the bottom surface of bottom frame is equipped with the several runner.
And two ends of the telescopic fixing arm are respectively and fixedly connected with the connecting disc through fixing bolts.
The outer sides of the two connecting discs are respectively provided with a plurality of bolts, and the connecting discs are detachably connected with the opposite-pressure loading system and/or the opposite-pull loading system through the bolts.
When the pulling arm in the pile body is adopted, the pulling arm in the pile body faces the jack system; when the pulling arm adopts the pile body outer pulling ring, the pile body outer pulling ring faces the outer side of the whole device.
When the opposite-pulling loading system adopts an inner opposite-pulling mode, the opposite-pressing loading system and the opposite-pulling loading system can be simultaneously installed at two ends of the jack system, the opposite-pressing arm connecting disc of the opposite-pressing loading system and the opposite-pulling arm connecting disc of the opposite-pulling loading system are of an integrated structure, the end parts of the opposite-pulling loading arm and the opposite-pressing loading arm are both fixed on the opposite-pressing arm connecting disc, and the pulling arm in the pile body is positioned on the outer side of the pile body pushing arm.
Still include the data acquisition system, the data acquisition system includes pressure sensor, stress collection appearance, laser displacement meter and displacement collection appearance, stress collection appearance and displacement collection appearance are all installed on the bearing platform, pressure sensor installs the tip at jack main part and rolling disc fixed connection department, the outside wall at the outside wall of rolling disc or the outside wall of pushing arm connection pad is installed to the laser displacement meter, the laser displacement meter includes upper and lower two laser displacement meters, the reading of laser displacement meter is s in the design1The lower laser displacement meter reading is s2And the vertical distance between the two laser displacement meters is d, the inclination angle of the pile body is
In the opposite-pressure loading system, a data acquisition system reserved line hole is formed in an opposite-pressure arm connecting disc, one end of a data transmission line is connected with the laser displacement meter, the other end of the data transmission line penetrates through the data acquisition system reserved line hole and is connected with the displacement acquisition instrument, and the data transmission line transmits displacement values measured by the upper laser displacement meter and the lower laser displacement meter to the laser displacement meter respectively.
The invention has the beneficial effects that:
(1) the structure is simple, the use and the operation are convenient, and the loading system comprises a pressing loading system and a pulling loading system, thereby being suitable for various loading conditions.
(2) The column jack as the loading core can be adjusted according to the precision required by the experiment, the requirements of various fields, even indoor model tests are met, and the position and the rotation angle of the fixed push disc in the device can be adjusted so as to adapt to jacks of various models and sizes;
(3) the device can acquire and output data in real time through a data acquisition system, and can analyze a test in real time by matching with an external receiving and processing device;
(4) all the components of the device are detachably connected, the device is simple to install and use, convenient to transport and store, and can be used by only 2-3 people.
In conclusion, the device can complete the loading and in-situ test and quantity measurement requirements under different loads of 150 plus 1000mm pile diameter, 1-200 tonnage and different loads by changing the type and the quantity of the jacks and replacing corresponding accessories, and is used for simulating the situation in actual load.
Drawings
FIG. 1 is a schematic structural diagram of a device in which a counter-pull loading system adopting an inner counter-pull mode is combined with a counter-pressure loading system;
FIG. 2 is a schematic structural view of the jack system;
FIG. 3 is a schematic structural view of the liftable jack cart;
FIG. 4 is a schematic structural view of a loading jack securing system;
FIG. 5 is a schematic structural diagram of a single-sided pressure-opposing loading system;
FIG. 6 is a schematic view of the apparatus in a counter-pressure mode;
FIG. 7 is a schematic diagram of a configuration of a counter-pull loading system using an inner counter-pull mode;
FIG. 8 is a schematic view of the device in an inner-to-inner pull mode;
FIG. 9 is a schematic diagram of a configuration of a pull loading system using an outer pull mode;
fig. 10 is a schematic structural diagram of the device in the external pull-up mode.
In the figure: 1 a liftable jack trolley; 101 a rotating wheel; 102 a bearing table; 103 a sliding groove; 104 fixing the tray; 105 a tray fixing plate; 106 bearing table lifting mechanism; 2 a jack system; 201 a jack body; 202 jack cylinder; 203 connecting lines; 3 loading the jack fixing system; 301 fixing the bolt; 302 a telescoping securing arm; 303 a connecting disc; 4, a data acquisition system; 401 a pressure sensor; 402 a stress collector; 403 laser displacement meter; 4031 laser displacement meter; 4032 lower laser displacement meter; 404 displacement acquisition instrument; 5, a pressure loading system; 501 pairs of pressure arm connecting discs; 502 a reserved line hole of a data acquisition system; 503 data transmission lines; 504 pair of pressure loading arms; 505 pushing the arm by the pile body; 506 a one-way movable anchor; 507 pushing the arm connecting plate; 6, a pull loading system; 601 oppositely pulling the loading arm; 602 pulling the arm fixing member; 603 pulling arms in the pile body; 604 pairs of draw arm connection discs; 605 pile body outside the ring.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
The pile side transverse static load loading device comprises a liftable jack trolley, a jack system, a loading jack fixing system and a loading system, wherein the jack system is detachably arranged on the liftable jack trolley through the loading jack fixing system, the loading system is arranged on the loading jack fixing system, and the loading system loads a pile body through the acting force of the jack system. According to different loading forms, directions and pile intervals, the method can be divided into two forms of pressing and pulling. The loading system comprises a pressing loading system and a pulling loading system, and the pressing loading system and the pulling loading system can be simultaneously or respectively arranged on the loading jack fixing system. When the pile body is oppositely pulled and loaded, the pile body can be divided into an inner oppositely pulling loading mode and an outer oppositely pulling loading mode according to different sizes of the pile body.
Fig. 1 is a schematic structural diagram of the device when a counter-pulling loading system and a counter-pulling loading system in an internal counter-pulling mode are combined, the device comprises a liftable jack trolley 1, a jack system 2, a loading jack fixing system 3, a data acquisition system, a counter-pressing loading system 5 and a counter-pulling loading system 6, the loading jack fixing system 3 is arranged on the jack trolley 1, the jack system 2 is installed on the loading jack fixing system 3, the jack system of the counter-pressing loading system 5 and/or the counter-pulling loading system 6 is connected with the loading jack fixing system 3, namely the counter-pressing loading system 5 and the counter-pulling loading system 6 can be connected with the loading jack fixing system 3 respectively or simultaneously. In fig. 1, the counter-pull loading system 6 and the counter-pressure loading system 5 in the inner counter-pull mode can be simultaneously connected with the loading jack fixing system 3.
As shown in fig. 2, the jack system 2 includes a jack post main body 201, a jack cylinder 202 and a motor, the jack main body 201 is connected to the jack cylinder 202 through a connection line 203, and the jack main body 201 is placed on the liftable jack cart 1.
As shown in fig. 3, the liftable jack-up cart 1 includes a bearing platform 102, a fixed tray 104 and a bearing platform lifting system 106, wherein the bearing platform 102 is supported on the ground through the bearing platform lifting system 106, and the bearing platform 102 is driven to lift through the bearing platform lifting system 106, so as to adjust the height of the bearing platform 105. Bearing platform operating system 106 includes connecting rod elevating system and bottom frame in this embodiment, and the bottom frame of connecting rod mechanism are connected, and the top of connecting rod mechanism and the bottom fixed surface of bearing platform 102 are connected, and connecting rod elevating system includes the connecting rod of several vertical direction connections, through the folding and opening of connecting rod, has realized the lift of bearing platform. The bottom surface of the bottom frame is provided with a rotating wheel 101, and the rotating wheel 101 can be fixed or can rotate. The cart can be moved to a specified position by the wheels 101; after the cart is moved to a designated position, the wheels 101 are fixed, thereby fixing the position of the cart. Through setting up runner 101, guaranteed that power and displacement are on the collinear when loading to and guarantee to place still under the on-the-spot unevenness place.
The bearing table 102 is provided with two parallel sliding grooves 103, and the fixed tray 104 is arranged in the sliding grooves 103 through a tray fixing plate 105. The bottom of the fixed tray 104 is connected with the tray fixing plate 105 through a screw and a nut, and when the nut is loosened, the fixed tray 104 is rotatably connected with the tray fixing plate 105; when the nut is tightened, the fixed tray 104 and the tray fixing plate 105 are fixedly coupled. The tray fixing plate 105 is located in the sliding groove 103, and the tray fixing plate 105 slides in the sliding groove 103, and the tray fixing plate 105 may be fixed in the sliding groove 103 by bolts. When the jack main bodies 201 with different sizes/tonnages are placed in the two fixing trays 104, the nuts are unscrewed, the fixing trays 104 are rotated to a proper angle, and simultaneously the distance between the two fixing trays 104 is adjusted through the tray fixing plate 105, so that the inner surfaces of the fixing trays 104 are tightly attached to the outer surfaces of the jacks, and therefore the liftable jack trolley can adapt to the jack main bodies with different sizes or tonnages, and therefore the jack main bodies 201 serving as loading cores can be adjusted according to the precision required by tests, various fields can be met, and even the requirements of indoor model tests can be met.
As shown in fig. 4, the loading jack fixing system 3 includes a connection pad 303 located outside two ends of the jack main body, and a plurality of retractable fixing arms 302 connecting the two connection pads 303, the connection pad 303 is fixedly connected to an end of the jack main body 201, two ends of the retractable fixing arms 302 are respectively fixedly connected to the connection pad 303 through fixing bolts 301, so that the connection pad 303 can be rotatably detached to facilitate placing the jack main body 201 on the liftable jack trolley. In this embodiment, six bolts are respectively disposed at outer sides of the two connection pads 303, and the connection pads 303 are detachably connected to the opposite-pressure loading system and/or the opposite-pull loading system through the bolts.
As shown in fig. 5 and 6, the outer sides of the connection discs 303 of the loading jack fixing system 3 are respectively and fixedly connected with a counter-pressure loading system, and counter-pressure loading on the pile body is realized through the counter-pressure loading systems arranged at the two ends. As shown in fig. 5, the single-side opposite-pressing loading system includes an opposite-pressing arm connection pad 501, an opposite-pressing loading arm 504, a pile pushing arm 505 and a pushing arm connection pad 507, the opposite-pressing arm connection pad 501 is fixedly connected with the connection pad 303 through a bolt, the pushing arm connection pads 507 are arranged in parallel outside the opposite-pressing arm connection pad 501, and the opposite-pressing arm connection pad 501 and the pushing arm connection pad 507 are fixedly connected through the opposite-pressing loading arm 504. The counter-pressure loading arm 504 is made of Q345 steel that is sufficiently rigid and of sufficient weight to meet the load bearing requirements of the cart. The center of the outer wall surface of the pushing arm connecting plate 507 is connected to the pile pushing arm 505 through a one-way movable holder 506. The pile body pushing arm 505 can rotate along the vertical direction, the shape and size of the pile body pushing arm are adapted to the loading pile body, and the rigidity and weight of the pile body pushing arm need to meet the loading requirement so as to meet the stability of the loading direction after the axial pile body loading and the deflection are generated.
As shown in fig. 6, when the jack system 2 is operated, the jack main body 201 applies an outward thrust to the opposite-pressure loading system connected to both end portions, and at this time, the pile body pushing arm 506 of the opposite-pressure loading system applies an outward thrust to the outer pile body, and in the opposite-pressure loading process of the pile body, the relative displacement change data of the pile body is collected.
As shown in fig. 7 to 10, the outer sides of the connecting discs 303 of the loading jack fixing system 3 are respectively and fixedly connected with a counter-pulling loading system, and counter-pulling loading of the pile body is realized through the counter-pressing loading systems arranged at the two ends. The opposite-pulling loading system comprises an opposite-pulling loading arm 601, a pulling arm fixing piece 602, a pulling arm and an opposite-pulling arm connecting disc 604, wherein the opposite-pulling arm connecting disc 604 is positioned at the outer side of the two connecting discs 303 and is fixedly connected with the two connecting discs 303. The opposite-pulling loading arm 601 is in a frame shape, one side frame edge of the opposite-pulling loading arm 601 is fixedly connected with the outer side face of the opposite-pulling arm connecting disc 604 through a bolt, and the opposite-pulling arm connecting disc 604 can be detached through the bolt. The other side frame edge of the opposite pulling loading arm 601 is located at the outer side of the other side opposite pulling arm connecting plate 604, and the side frame edge is connected with the pulling arm through the pulling arm fixing part 602. The tension arm fixing piece 602 is rotatably disposed on the frame edge of the opposite tension loading arm 601, and the tension arm fixing piece 602 may further be fixedly connected to the opposite tension loading arm 601 through a screw and a nut. The pulling arm is hinged to the pulling arm fixing part 602, so that the pulling arm can rotate vertically.
The pulling arm can be a post body pulling arm 603 or a post body pulling ring 605. For the tubular pile with the diameter smaller than 300mm, the pulling arm in the pile body 603 is adopted at this time, the pulling arm fixing piece 602 is rotated, the pulling arm in the pile body 603 connected with the pulling arm fixing piece is rotated to face the jack system, the nut is screwed, the position of the pulling arm fixing piece 602 is fixed, and the opposite-pulling loading system at this time adopts an inner opposite-pulling mode, as shown in fig. 7 and 8. When the jack system 2 acts, the jack main body 201 applies outward thrust to the connecting discs 303 and the opposite pull arm connecting discs 604 at the two ends of the jack main body, at the moment, the pile body inner pull arm 603 on the opposite pull loading arm 601 connected with the opposite pull arm connecting discs 604 moves towards the jack system, and the pile body inner pull arm 603 applies inward pull force to the pile body from the outer side of the pile body. And acquiring relative displacement change data of the pile body in the process of carrying out internal counter-pulling loading on the pile body.
When the opposite-pulling loading system adopts an inward opposite-pulling mode, the opposite-pressing loading system and the opposite-pulling loading system can be simultaneously installed at two ends of the jack system, as shown in fig. 1, the opposite-pressing arm connecting disc of the opposite-pressing loading system and the opposite-pulling arm connecting disc of the opposite-pulling loading system are of an integrated structure at the moment, namely, the ends of the opposite-pulling loading arm and the opposite-pressing loading arm are both fixed on the opposite-pressing arm connecting disc 501 at the moment, and the pull arm 603 in the pile body is located at the outer side of the push arm 505 of the pile body. After the positions of the pull arm and the pile pushing arm in the pile body are adjusted, the opposite-pressing loading system and the opposite-pulling loading system adopting an inner opposite-pulling mode can work together, and the effect of continuous slow loading of the pull-pressing cycle is achieved.
For the tubular pile with the diameter larger than 300mm, the pulling arm at the moment adopts the outer pulling ring 605 of the pile body, the outer pulling ring 605 of the pile body is annular, the outer pulling ring 605 of the pile body is sleeved outside the tubular pile during loading action, and the outer pulling ring of the pile body with the corresponding size is selected according to the external size of the tubular pile. The pulling arm fixing member 602 is rotated to rotate the pile body outer pulling ring 605 connected with the pulling arm fixing member to the outside of the whole device, the nut is tightened to fix the position of the pulling arm fixing member 602, and the opposite-pulling loading system adopts an outer opposite-pulling mode, as shown in fig. 9 and fig. 10. When the jack system 2 acts, the jack main body 201 applies outward thrust to the connecting discs 303 and the opposite pull arm connecting discs 604 on the two sides of the jack main body, and at the moment, the pile body outer pull ring 605 on the opposite pull loading arm 601 connected with the opposite pull arm connecting discs 604 directly applies inward tension to the pipe pile in the ring. And acquiring relative displacement change data of the pile body in the process of externally opposite pulling and loading the pile body.
When the opposite pull loading mode adopts the external opposite pull mode, the opposite press loading system and the opposite pull loading system can not be installed on the device at the same time. When the pile body needs to be subjected to counter-pressure loading, the counter-pull loading system is detached from the device, and the counter-pressure loading system is installed; when the pile body needs to be subjected to counter-pulling loading, the counter-pressing loading system is detached from the device, and the counter-pulling loading system is installed.
The device also comprises a data acquisition system 4, wherein the data acquisition system comprises a pressure sensor 401, a stress acquisition instrument 402, a laser displacement meter 403 and a displacement acquisition instrument 404, and the stress acquisition instrument 402 and the displacement acquisition instrument 404 are both arranged on the bearing platform 202. The pressure sensor 401 is installed at the end of the fixed connection between the jack main body 201 and the rotating disc 303, and is used for measuring the loading value of the jack. The laser displacement meter 403 is installed on the outer side wall surface of the rotating disc 303 or the outer side wall surface of the pushing arm connecting disc 507, and when the pile body is subjected to opposite pressure loading, the laser displacement meter 403 is installed on the outer side wall surface of the pushing arm connecting disc 507; when the pilings are subjected to counter-pulling loading, the laser displacement gauge 403 is mounted on the outer side wall surface of the rotating disc 303. The laser displacement meter comprises an upper laser displacement meter and a lower laser displacement meter, the upper laser displacement meter 4031 and the lower laser displacement meter 4032 are included, and the inclination angle of the pile body can be calculated by measuring the relative displacement transformation of the pile body. In this application, let us read the laser displacement meter 4031 as s1Lower laser displacement gauge 4032 reads s2And the vertical distance between the two laser displacement meters is d, the inclination angle of the pile body is
As shown in fig. 5, in the opposite-pressure loading system, a data acquisition system reserved hole 502 is formed in an opposite-pressure arm connecting disc 501, one end of a data transmission line 503 is connected with the laser displacement meter, and the other end of the data transmission line passes through the data acquisition system reserved hole 502 and is connected with the displacement acquisition instrument 404. The data transmission line 503 transmits the displacement values measured by the upper laser displacement gauge 4031 and the lower laser displacement gauge 4032 to the laser displacement gauges, respectively.
In the using process of the device, a corresponding loading system is selected according to the loading mode required by the pile body. When the pile body needs to be pressurized and loaded, the opposite-pressure loading systems are installed at the two ends of the jack system. When needs carry out pulling force loading to the pile body, to drawing loading system at jack system's both ends installation to select for use suitable pulling force arm according to the size of pile body: when the size of the pile body is smaller, an internal opposite pulling mode is adopted, and the pulling arm in the pile body is adopted; when the size of the pile body is larger, an external opposite pulling mode is adopted, and the pulling arm at the moment adopts a pile body external pulling ring. The opposite-pressure loading system and the opposite-pull loading system in the internal opposite-pull mode can be simultaneously installed at two ends of the jack system, so that continuous slow loading of the pull-pressure cycle is realized.
The pile-side transverse static load loading device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a horizontal dead load loading device of stake side, includes the jack system, jack system (2) include jack main part (201), its characterized in that: the lifting jack trolley is characterized by further comprising a lifting jack trolley, a loading jack fixing system and a loading system, wherein the lifting jack system is installed on the lifting jack trolley through the loading jack fixing system, the loading system is installed on the loading jack fixing system, and the loading system is a pressure-to-pressure loading system and/or a pull-to-pull loading system;
the liftable jack trolley (1) comprises a bearing table (102), a fixed tray (104) and a bearing table lifting system (106), wherein two parallel sliding grooves (103) are formed in the bearing table (102), the fixed tray (104) is arranged in the sliding grooves (103) through a tray fixing plate (105), and the bottom of the fixed tray (104) is connected with the tray fixing plate (105) through screws and nuts;
the loading jack fixing system (3) comprises connecting discs (303) positioned on the outer sides of two ends of a jack main body and a plurality of telescopic fixing arms (302) connected with the two connecting discs (303), and the connecting discs (303) are fixedly connected with the end parts of the jack main body (201);
the opposite-pressure loading system comprises an opposite-pressure arm connecting disc (501), an opposite-pressure loading arm (504), a pile body pushing arm (505) and a pushing arm connecting disc (507), wherein the opposite-pressure arm connecting disc (501) is fixedly connected with the outer side wall surface of the connecting disc (303), the pushing arm connecting discs (507) are arranged on the outer side of the opposite-pressure arm connecting disc (501) in parallel, the opposite-pressure arm connecting disc (501) is fixedly connected with the pushing arm connecting disc (507) through the opposite-pressure loading arm (504), the center of the outer side wall surface of the pushing arm connecting disc (507) is connected with the pile body pushing arm (505) through a one-way movable fixer (506), and the pile body pushing arm (505) rotates along the vertical direction;
the opposite-pulling loading system comprises opposite-pulling loading arms (601), pulling arm fixing pieces (602), pulling arms and opposite-pulling arm connecting discs (604), the opposite-pulling arm connecting discs (604) are fixedly connected with the outer side wall surfaces of the two connecting discs (303), the opposite-pulling loading arms (601) are in a frame shape, one side frame edge of each opposite-pulling loading arm (601) is fixedly connected with the outer side surface of the opposite-pulling arm connecting disc (604), the other side frame edge of each opposite-pulling loading arm (601) is positioned on the outer side of the opposite-pulling arm connecting disc (604), the side frame edge is connected with the pulling arms through the pulling arm fixing pieces (602), the pulling arm fixing pieces (602) are rotatably arranged on the frame edges of the opposite-pulling loading arms (601), the pulling arms rotate along the vertical direction, and the pulling arms adopt pulling arms (603) in piles or pulling rings (605) outside the piles.
2. The pile-side lateral dead-load loading device of claim 1, wherein: the jack system (2) further comprises a jack cylinder (202) and a motor, the jack main body (201) is connected with the jack cylinder (202) through a connecting wire (203), and the jack main body (201) is placed on the lifting jack trolley (1).
3. The pile-side lateral dead-load loading device of claim 1, wherein: bearing platform (102) support in ground through bearing platform operating system (106), and bearing platform operating system (106) include connecting rod elevating system and bottom frame, and connecting rod mechanism's bottom and bottom frame are connected, and connecting rod mechanism's top and the bottom fixed surface of bearing platform (102) are connected, and connecting rod elevating system includes several connecting rods along vertical direction end to end connection, and the bottom surface of bottom frame is equipped with several runner (101).
4. The pile-side lateral dead-load loading device of claim 1, wherein: two ends of the telescopic fixing arm (302) are respectively and fixedly connected with the connecting disc (303) through fixing bolts (301).
5. The pile-side lateral dead-load loading device of claim 1, wherein: the outer sides of the two connecting discs (303) are respectively provided with a plurality of bolts, and the connecting discs (303) are detachably connected with the opposite-pressure loading system and/or the opposite-pull loading system through the bolts.
6. The pile-side lateral dead-load loading device of claim 1, wherein: when the pull arm (603) in the pile body is adopted as the pull arm, the pull arm (603) in the pile body faces the jack system; when the pulling arm adopts the pile body outer pulling ring (605), the pile body outer pulling ring (605) faces the outer side of the whole device.
7. The pile-side lateral dead-load loading device of claim 1, wherein: when the opposite-pulling loading system adopts an inner opposite-pulling mode, the opposite-pressing loading system and the opposite-pulling loading system can be simultaneously installed at two ends of the jack system, the opposite-pressing arm connecting disc of the opposite-pressing loading system and the opposite-pulling arm connecting disc of the opposite-pulling loading system are of an integrated structure, the end parts of the opposite-pulling loading arm and the opposite-pressing loading arm are both fixed on the opposite-pressing arm connecting disc (501), and the pull arm (603) in the pile body is located on the outer side of the pile body pushing arm (505).
8. The pile-side lateral dead-load loading device of claim 1, wherein: still include data acquisition system (4), data acquisition system includes pressure sensor (401), stress acquisition appearance (402), laser displacement meter (403) and displacement acquisition appearance (404), stress acquisition appearance (402) and displacement acquisition appearance (404) are all installed on bearing platform (202), the tip at jack main part (201) and rolling disc (303) fixed connection department is installed in pressure sensor (401), the outside wall at rolling disc (303) or the outside wall of pushing arm connection pad (507) are installed in laser displacement meter (403), laser displacement meter includes two upper and lower laser displacement meters, the reading of designing laser displacement meter is s1The lower laser displacement meter reading is s2And the vertical distance between the two laser displacement meters is d, the inclination angle of the pile body is
9. The pile-side lateral dead-load loading device of claim 8, wherein: in the opposite-pressure loading system, a data acquisition system reserved line hole (502) is formed in an opposite-pressure arm connecting disc (501), one end of a data transmission line (503) is connected with the laser displacement meter, the other end of the data transmission line penetrates through the data acquisition system reserved line hole (502) and is connected with the displacement acquisition instrument (404), and the data transmission line (503) transmits displacement values measured by the upper laser displacement meter and the lower laser displacement meter to the laser displacement meter respectively.
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