CN103031860A - Pipe pile vertical static load testing connection device, and testing system and method using same - Google Patents
Pipe pile vertical static load testing connection device, and testing system and method using same Download PDFInfo
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- CN103031860A CN103031860A CN2012105453259A CN201210545325A CN103031860A CN 103031860 A CN103031860 A CN 103031860A CN 2012105453259 A CN2012105453259 A CN 2012105453259A CN 201210545325 A CN201210545325 A CN 201210545325A CN 103031860 A CN103031860 A CN 103031860A
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Abstract
The invention discloses a pipe pile vertical static load testing connection device, which mainly comprises vertical connecting rods and a clamp for clamping the pile head of a pipe pile, wherein the lower ends of the connecting rods are connected to the clamp; the upper ends of the connecting rods are used for connecting a counterforce loading device positioned above the pipe pile; in an anti-pulling test, the pipe pile is taken as a test pipe pile, and upward pulling force is transmitted to the test pipe pile through the friction acting force between the clamp and the test pipe pile; or in a compression test, the pipe pile comprises a test pipe pile and at least two pairs of anchor piles which are symmetrically positioned on the periphery of the test pipe pile, and counterforce is applied to the test pipe pile in a balanced way through the friction acting force between the clamp and the anchor piles. The invention further discloses a testing system and method using the connection device. The pipe pile vertical static load testing connection device, the testing system and the method are suitable for the anti-pulling test and the compression test, and have high universality; and the pipe pile vertical static load testing connection device is convenient to install, is low in cost and has high safety, and various problems existing in the conventional connection method are solved, and technical support is provided for the realization of wide application of an anchor pile method in compression tests.
Description
Technical field
The invention belongs to the pile foundation detection field, relate in particular to a kind of prestressed concrete pipe pile pile foundation vertical static loading test linkage, also relate to the pilot system of using this linkage, other relates to the test method of this system.
Background technology
Prestressed concrete pipe pile is a kind of tubular precast reinforced concrete piles that adopts pretensioned prestressing technique and centrifugal formation method to make, at present, various types of prestressed concrete pipe piles have been widely used in building engineering, deepwater wharf structure, road and bridge engineering etc.In engineering construction, the bearing capacity of stake has become a very important technological means of Control Engineering quality, and the pile foundation vertical static loading test is to determine directly perceived, the most reliable method of bearing capacity of pile foundation.Prestressed concrete pipe pile pile foundation vertical static loading test comprises compressive static load test and resistance to plucking static loading test.
In pile tube resistance to plucking static loading test, the prestressed concrete pipe pile that needs to carry out pile tube resistance to plucking static loading test is connected with experimental rig, and existing connected mode has following several:
The first is that joint bar is filled out the core method: at tubular pile head partial insertion reinforcing bar, then concreting is filled out core, after concrete setting and maintenance reach design strength, with the method for welding reinforcing bar is connected with pressure-bearing bloom or steel case, girder steel on being placed on jack.The shortcoming of this method of attachment is: the necessary concreting of ⑴, and the concrete curing time of water seasoning is long, generally is no less than 7 days; ⑵ carry out joint bar to pile tube and fill out the core processing, the effort of taking a lot of work, and material can not get recycling, and at the trial, some reinforcing bars may be pulled out, and cause test not carry out; ⑶ the welding quality of reinforcing bar is difficult for guaranteeing.
The second is pile tube top drilling method: several borings perpendicular to pile body evenly distribute on tubular pile body top, steel pin or screw rod are set in boring, connecting steel wire ropes or reinforcing pull rod on steel pin or screw rod, and by wire rope or reinforcing pull rod connection tubular pile body and counterforce device.This method need to be holed at pile body, to pile tube existence destruction to a certain degree, can't guarantee the integrality of pile tube.
The third is that flange connects synthesis: the pile for prestressed pipe pulling resistance testing device of employing comprises stake cylinder, upper straining beam, lower straining beam, girder and jack, and its king-pile cylinder is connected by flange with the pile tube end plate.This apparatus structure is comparatively complicated, and inconvenience is installed, and has increased the difficulty of pile tube resistance to plucking static loading test.
In the pile tube compressive static load test, usually can load counterforce device at prestressed concrete pipe pile, load counterforce device and mainly comprise following two kinds of forms:
The first is ballasting platform counterforce device, namely adopts accumulation load method, needs before on-test to be deposited on the bearing platform heap weight is disposable, and there is potential safety hazard in the preloading process, and implementation cost is higher, tests time long; In addition, " accumulation load method " has relatively high expectations to the test site, if the situation such as the test site exists narrow or geology is soft, " accumulation load method " then can't be suitable for.
The second is to draw anchor device, namely change the structural system of whole loading counterforce device, the structural system that formed by curved crossbeam is improved for stressed simple tension and compression member system, although employing draws anchor device to optimize the structural system of counterforce device, oblique pulling easily makes the pile crown failure of pile tube.
The third is the anchor pile beam counterforce device, it is anchored pile-testing method, that several symmetrical around test pile anchoring piles are coupled together by dowel or other linkages and reaction frame, rely on the jack on stake top with reaction frame jack-up, provide counter-force by the anchoring pile that is connected, provide the size of counter-force to be determined by reaction frame intensity and the uplift resistance that is connected anchoring pile.The advantage of this method is: the use cost of anchor pile beam counterforce device is low, efficient is high.But owing to can't determine to be fit to the loading counterforce device of engineering application and the method for attachment of pile tube, this device not yet is applied in the pile tube compressive static load test at present.
Summary of the invention
First purpose of the present invention be to provide a kind of simple in structure, quick for installation, cost is lower, safe, the test site is required low, as can be applicable to simultaneously resistance to plucking test and compression test pile tube Vertical Static Loading Test linkage.
Above-mentioned purpose of the present invention realizes by the following technical solutions: a kind of pile tube Vertical Static Loading Test linkage, it is characterized in that: it mainly is comprised of vertical connecting rod and the anchor clamps that are used for the grip tube pile head, the lower end of described connecting rod is connected on the described anchor clamps, the upper end of described connecting rod is used for being connected to the loading counterforce device that is positioned at the pile tube top, be the test pile tube at pile tube described in the resistance to plucking test, by the friction force between anchor clamps and the test pile tube uplift force is passed to the test pile tube, perhaps comprise that at pile tube described in the compression test test pile tube and at least two pairs of symmetries are positioned at the anchoring pile of testing the pile tube periphery, provide the counter-force proportionality action in the test pile tube by the friction force between anchor clamps and the anchoring pile.
The present invention has realized in resistance to plucking test test pile tube and has loaded being connected or having realized that anchoring pile provides counter-force to act on the test pile tube with loading being connected of counterforce device in compression test of counterforce device, therefore, the present invention can be applicable to resistance to plucking test and compression test, highly versatile simultaneously; The present invention can not destroy the pile body of pile tube, can guarantee the integrality of pile tube; That the present invention installs is convenient, cost is lower, safe, solved the variety of issue that exists in traditional method of attachment, when being used for the resistance to plucking test such as the present invention, replaced " joint bar is filled out core and processed ", reached the reduction of erection time, reduced the purpose of cost; And when being used for compression test, with engineering pile " anchored pile-testing method " replacements " accumulation load method " as anchoring pile, for the extensive use of realization anchored pile-testing method in compression test provides technical support.
As a kind of improvement of the present invention, described connecting rod all links to each other by detachable syndeton with described anchor clamps, loading counterforce device.
As one embodiment of the present invention, described detachable syndeton is screw connection structure, described anchor clamps mainly are comprised of with the otic placode of being located on the dop outer wall the tubular dop that close fitting is sleeved on the tubular pile head, screw connection structure between described connecting rod and the anchor clamps comprises the screw that is opened on the described otic placode and is located at the screw thread of described connecting rod lower end, and the lower end of described connecting rod is passed behind the described screw by the fixing connecting bolt that forms of nut.Anchor clamps of the present invention and pile tube closely cooperate, so that have enough frictional force between the two, can fully guarantee bonding strength, thereby are used for realizing that the power transmission of resistance to plucking and compression test provides uplift force and downforce for the test pile tube.
In order to realize closely cooperating of anchor clamps and pile tube, as a further improvement on the present invention, described tubular dop is formed by the docking of two and half cylindrical shells.
As a kind of preferred embodiment of the present invention, on the interface of described two and half cylindrical shells, has respectively overhanging flank, described flank is plate body and extends along the length direction of described half cylindrical shell, after having corresponding screw on the plate face of described flank and being used for passing for bolt by the fixing pile holder bolt that forms of nut.
Second purpose of the present invention is to provide a kind of pilot system of using above-mentioned pile tube Vertical Static Loading Test linkage.
Above-mentioned purpose of the present invention realizes by the following technical solutions: a kind of pilot system of using above-mentioned pile tube Vertical Static Loading Test linkage is characterized in that: comprise described pile tube Vertical Static Loading Test linkage and load counterforce device; In the resistance to plucking test, described linkage joint test pile tube is passed to the test pile tube with loading counterforce device with uplift force; Perhaps in compression test, described linkage connection loading counterforce device and at least two pairs of anchoring piles that are symmetrically distributed in test pile tube periphery are to provide the counter-force proportionality action in the test pile tube.
As one embodiment of the present invention, the loading counterforce device that is used for the resistance to plucking test comprises buttress, girder, loading blocks and short beam, described girder is across being positioned on the described buttress at above the described test pile tube and its two ends, be used for to place lift-up device on the described girder and make its be in the test pile tube directly over, described loading blocks and short beam are superimposed on the end face of described lift-up device from bottom to top successively, the external part that loading blocks becomes short beam is stretched out respectively at the two ends of described short beam, and the external part of described short beam links to each other to realize being connected of loading counterforce device and test pile tube with described test connecting device.
As one embodiment of the present invention, the loading counterforce device that is used for compression test comprises girder, secondary beam and short beam, be used for placing lift-up device on the end face of described test pile tube, described girder is across the top of described test pile tube and is pressed on the lift-up device, described secondary beam with the direction perpendicular to girder make at least its two ends be positioned at described anchoring pile directly over, the secondary beam middle part then is pressed on the girder, described short beam places on the described secondary beam, the external part that secondary beam becomes short beam is stretched out respectively at the two ends of described short beam, and the external part of described short beam and described test connecting device link to each other to realize loading being connected of counterforce device and anchoring pile.
The preferred jack of described lift-up device also can select other to have the light little crane gear that rigid top is lifted heavy thing function.
The 3rd purpose of the present invention is to provide a kind of test method of above-mentioned pilot system.
Above-mentioned purpose of the present invention realizes by the following technical solutions: a kind of test method of above-mentioned pilot system is characterized in that may further comprise the steps:
⑴ check with 1.2 times of uplift resistances to the test pile tube of maximum trial load, selects test connecting device according to checking computation results;
⑵ be sleeved on the anchor clamps close fitting of test connecting device on the pile crown of test pile tube;
⑶ lift girder, make its across be installed in the test pile tube the top, lift-up device is placed on the girder, and be positioned at the test pile tube directly over;
⑷ place loading blocks at the end face of lift-up device, places short beam in loading blocks again;
⑸ the connecting rod jockey of service test linkage and the external part of short beam also are fixed the pilot system installation;
⑹ operate lift-up device, and described test connecting device evenly is subject to uplift force and power transmission to testing pile tube, makes the developmental tube pile desired maximum trial load that is put to the test.
As another embodiment of the invention, a kind of test method of above-mentioned pilot system is characterized in that may further comprise the steps:
⑴ choose anchoring pile with 1.2 times of maximum trial load according to the construction plant condition, determines the design uplift resistance of every anchoring pile, and the uplift resistance of anchoring pile is checked, and selects test connecting device according to checking computation results;
⑵ be sleeved on the anchor clamps close fitting of test connecting device on the pile crown of anchoring pile;
⑶ be placed on lift-up device on the end face of test pile tube;
⑷ lift girder, make it across the top that is installed in the test pile tube and be pressed on the lift-up device, perpendicular to the girder direction secondary beam being placed on the girder, and make anchoring pile be positioned at least the secondary beam two ends under;
⑸ place short beam at the two ends of secondary beam at least;
⑹ the connecting rod jockey of service test linkage and the external part of short beam also are fixed, and consist of reaction frame, the pilot system installation;
⑺ operate lift-up device, the stressed jack-up of reaction frame, and test connecting device evenly is subject to uplift force, and anchoring pile provides counter-force and proportionality action in the test pile tube, makes the developmental tube pile desired maximum trial load that is put to the test.
Compared with prior art, the present invention has following significant effect:
⑴ the present invention has realized that the test pile tube is passed to the test pile tube with loading being connected of counterforce device with uplift force in the resistance to plucking test, realized that simultaneously anchoring pile provides the counter-force proportionality action in the test pile tube with loading being connected of counterforce device in compression test, therefore, the present invention can be applicable to resistance to plucking test and compression test simultaneously, highly versatile, convenient and practical.
⑵ the present invention adopts anchor clamps clamping pile tube, can not destroy the pile body of pile tube, can guarantee the integrality of pile tube, guarantees construction quality.
⑶ that the present invention installs is convenient, cost is lower, safe, solved the variety of issue that exists in traditional method of attachment, when being used for the resistance to plucking test such as the present invention, replaced " joint bar is filled out core and processed ", reached the reduction of erection time, reduced the purpose of cost; And when being used for compression test, with engineering pile " anchored pile-testing method " replacements " accumulation load method " as anchoring pile, eliminated the potential safety hazard of " accumulation load method " existence, and greatly shorten the process of the test time.
⑷ when being used for compression test, the present invention adopts " anchored pile-testing method ", the use cost of " anchored pile-testing method " middle cross beam counterforce device is low, efficient is high, therefore the present invention has kept the advantage of " anchored pile-testing method ", and can't determining of having solved that " anchored pile-testing method " exist be fit to the problem of loading counterforce device that engineering uses and the method for attachment of pile tube, for realization " anchored pile-testing method " extensive use in compression test provides technical support.
⑸ of the present invention simple in structure, practical, the test site required low, in the test occasion applicable to various geological conditionss, narrow space, broken the limitation that " accumulation load method " is applied to the test site.
Description of drawings
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structure chart of the anchor clamps of test connecting device of the present invention;
Fig. 2 is the structure chart of test connecting device clamping pile tube of the present invention;
Fig. 3 is the structure chart of the embodiment of the invention 1;
Fig. 4 is the schematic top plan view of the embodiment of the invention 2;
Fig. 5 is that the A of Fig. 4 is to view;
Fig. 6 tests pile tube, anchoring pile and girder, secondary beam layout schematic top plan view in the embodiment of the invention 2.
The specific embodiment
Embodiment 1
Shown in Fig. 1～3, it is a kind of pile tube Vertical Static Loading Test of the present invention linkage, it mainly is comprised of vertical connecting rod and the anchor clamps 2 that are used for the grip tube pile head, the lower end of connecting rod 1 is connected on the anchor clamps 2, the upper end of connecting rod is used for being connected to the loading counterforce device that is positioned at the pile tube top, pile tube is test pile tube 3 in the resistance to plucking test, by the friction force between anchor clamps 2 and the test pile tube 3 uplift force is passed to test pile tube 3.
Connecting rod all links to each other by detachable syndeton with anchor clamps 2, loading counterforce device 4.Detachable syndeton is screw connection structure, connecting rod adopts screw rod 1, anchor clamps 2 mainly are sleeved on the tubular dop on the test pile tube by close fitting and the otic placode 22 of being located on the dop outer wall forms, screw connection structure between screw rod and the anchor clamps comprises the screw that is opened on the otic placode 22 and is positioned at the screw thread of screw rod lower end, and the lower end of screw rod is passed behind the screw by the fixing connecting bolt 80 that forms of nut.In the present embodiment, the tubular dop is formed by two and half cylindrical shells 21,23 docking, on the interface of two and half cylindrical shells, has respectively overhanging flank 24, flank 24 is plate body and extends along the length direction of half cylindrical shell, after having corresponding screw on the plate face of flank 24 and being used for passing for bolt by the fixing pile holder bolt 25 that forms of nut.The internal diameter of tubular dop is identical with test pile tube external diameter, close contact with guarantee test pile tube and tubular dop, pile holder bolt 25 is when connecting two and half cylindrical shells, can form frictional force at the contact surface of the two, with this uplift force that comes the balance screw rod that anchor clamps are applied, and with uplift force reach the test pile tube pile crown.
A kind of pilot system of using above-mentioned pile tube Vertical Static Loading Test linkage comprises above-mentioned pile tube Vertical Static Loading Test linkage and loads counterforce device 4; In resistance to plucking test, test connecting device joint test pile tube 3 is passed to uplift force with loading counterforce device 4 test pile tube 3.In the present embodiment, load counterforce device and comprise buttress, girder 5, loading blocks 6 and short beam 7, lift-up device adopts jack 8, girder 5 across the test pile tube 3 above and its two ends be positioned on the buttress, be used for to place jack 8 on the girder 5 and make its be in test pile tube 3 directly over, loading blocks 6 and short beam 7 are superimposed on the end face of jack 8 from bottom to top successively, the external part that loading blocks 6 becomes short beam 7 is stretched out respectively at the two ends of short beam 7, and the external part of short beam 7 links to each other to realize being connected of loading counterforce device and test pile tube with test connecting device.
In certain engineering, general condition of engineering geology: engineering geology mainly is comprised of plain fill, flour sand, silt, completely decomposed mud stone, severely-weathered mud stone, middle weathered mudstone etc.The prestressed concrete pipe pile of stake footpath Φ 500 is adopted on the basis, and designing pile length is 9～47 meters, and the uplift bearing capacity design load is 350kN, and maximum trial load is the twice of uplift bearing capacity design load, is 700kN, and the stake of test pile tube is long to be 38 meters.
Adopt above-mentioned pilot system to carry out the resistance to plucking test, the method specifically may further comprise the steps:
⑴ check with 1.2 times of uplift resistances to the test pile tube of maximum trial load, selects test connecting device according to checking computation results, namely selects connecting bolt and pile holder bolt; At this moment, the maximum trial load of test connecting device of the present invention is 700kN, and pile holder bolt and connecting bolt are carried out the checking computations of bearing capacity, chooses the pile holder bolt of 8.8 grades of M36 * 320 and the connecting bolt of 8.8 grades of M39 * 3000;
⑵ be sleeved on the anchor clamps close fitting on the pile crown of test pile tube; Two and half cylindrical shells are by eight circular anchor clamps of pile holder bolt 25 anchor connections, to provide enough anchored force that pile crown is clamped, under the control of torque wrench instrument, clamp the pile crown of test pile tube, the anchor clamps diameter is 500mm, highly be 450mm, quality is 0.45t, and the fastening torque of each pile holder bolt is 1764Nm;
⑶ load counterforce device and adopt natural ground that end reaction is provided, and namely as buttress, lifts girder at buttress, make it across the top that is installed in the test pile tube, use the hydraulic jack hierarchical loading during test, jack is placed on the girder, and be positioned at the test pile tube directly over;
⑷ place loading blocks at the end face of jack, two short beams placed side by side on loading blocks again, the external part that loading blocks becomes short beam is stretched out at the two ends of short beam, the external part of short beam be positioned at otic placode directly over;
⑸ use the external part of screw rod jockey and short beam and be fixed, specifically in the otic placode of circular clamp, insert four screw rods, by four screw rods the external part of anchor clamps with two short beams that load counterforce device is connected, forms connecting bolt with bolt anchoring, the pilot system installation; The fastening torque of each connecting bolt is 2156Nm; At this moment, the axis of the end face center of the center of girder, jack, the center of loading blocks and test pile tube all is located along the same line, and is subject to uniform uplift force to guarantee screw rod, so that experimental data is more accurate;
⑹ operate jack, and test connecting device evenly is subject to uplift force and power transmission to testing pile tube, makes the developmental tube pile desired maximum trial load that is put to the test.
Shown in Fig. 4～6, the difference of the present embodiment and embodiment 1 is: pile tube Vertical Static Loading Test linkage is applicable to compression test, the test connecting device connection anchoring pile of the present embodiment pilot system and loading counterforce device are to provide the counter-force proportionality action in the test pile tube, and pile tube comprises that test pile tube 10 and at least two pairs of symmetries are positioned at the anchoring pile 11 of testing pile tube 10 peripheries.
Load counterforce device and comprise girder 5, secondary beam 20, loading blocks 60 and short beam 7, be used for placing jack 8 on the end face of test pile tube 10, girder 5 is across the top of test pile tube 10 and is pressed on the jack 8, secondary beam 20 with the direction perpendicular to girder 5 be located at anchoring pile 11 directly over, secondary beam 20 middle parts then are pressed on the girder 5, short beam 7 places on the secondary beam 20 by loading blocks 60, the external part that secondary beam 20 becomes short beam 7 is stretched out respectively at the two ends of short beam 7, and the external part of short beam 7 and test connecting device link to each other to realize loading being connected of counterforce device and anchoring pile.
In certain engineering, general condition of engineering geology: mainly by banketing, mud, silty clay, mucky soil, powder fine sand, remaining sand, severely-weathered mud stone, middle weathered mudstone, gentle breeze mud stone etc. and form; The pile for prestressed pipe of stake footpath Φ 500 is adopted on the basis, and designing pile length is 7～20 meters, and the Compressive Bearing Capacity of Single Pile design load is 2000kN, and maximum trial load is 4000kN, and the stake of test pile tube is long to be 15 meters.Because stake side soil mostly is mud, the bottom is severely-weathered mud stone, and the test site is narrow foundation ditch, can't carry out the accumulation load method single pile compression dead load test.
Above-mentioned pilot system is carried out compression test, specifically may further comprise the steps:
⑴ with 1.2 times of maximum trial load, choose anchoring pile according to the construction plant condition, determine the design uplift resistance of every anchoring pile, and the uplift resistance of anchoring pile checked, in the present embodiment, 12 symmetrical around utilization test pile tube 400mm stakes footpath engineering piles are as anchoring pile 11, and girder will be tested three row's anchoring piles that pile tube 10 anchoring pile 11 on every side is divided into symmetry, four anchoring piles are drawn together in every package, and every secondary beam 20 is arranged in anchoring pile 11 tops of same row.1.2 times of uplift resistances to anchoring pile 11 with maximum trial load check, and 1.2 times of maximum trial load is 4800kN, and then the design uplift resistance of every anchoring pile 11 is 400kN.Anchoring pile 11 embedded depths are about 20 meters, and severely-weathered mud stone is at the 16m depth, and anchoring pile enters approximately 4m of severely-weathered mud stone.According to " technical code for building pile foundation " (JGJ 94-2008), if only count severely-weathered mud stone section collateral resistance, then anchoring pile resistance to plucking ultimate bearing capacity standard value is:
T
Uk=Σ λ
iq
Siku
il
i=0.5 * 160 * π * 0.4 * 4=402kN＞400kN meets the demands.
With 2 times of the maximum trial load 800kN(of test connecting device anchoring pile design uplift resistance) pile holder bolt and connecting bolt are carried out the checking computations of bearing capacity, select test connecting device according to checking computation results, namely choose the pile holder bolt of 8.8 grades of M36 * 320 and the connecting bolt of 8.8 grades of M39 * 3000, the fastening torque of each pile holder bolt is 1764Nm, and the fastening torque of each connecting bolt is 2156Nm.
⑵ be sleeved on the anchor clamps close fitting on the pile crown of anchoring pile, and two and half cylindrical shells connect conglobate anchor clamps by eight pile holder bolts, specifically by eight pile holder bolt anchorings, so that enough anchored force to be provided pile crown clamped; Clamp the pile crown of anchoring pile under the control of torque wrench instrument, the anchor clamps diameter is 400mm, highly is 450mm, and quality is 0.3t;
⑶ be placed on jack on the pile crown end face of test pile tube;
⑷ arrange reference pegs 40, datum line beam 70 referring to Fig. 4 at test pile tube periphery, and reference pegs 40 is used for the displacement that the testing experiment pile tube occurs in process of the test with datum line beam 70; The lifting girder, girder is across the top that is installed in the test pile tube and be pressed on the jack, perpendicular to the girder direction three secondary beams being placed on the girder, and make anchoring pile be positioned at secondary beam under, anchoring pile, test pile tube and girder, secondary beam are arranged referring to Fig. 6;
At the two ends of secondary beam and the middle part place loading blocks 60, two short beams placed side by side on loading blocks 60, loading blocks is stretched out as the external part of short beam in the two ends of short beam, the external part of short beam be positioned at otic placode directly over;
In other embodiments, according to the concrete condition of test site, can between jack and girder, add loading blocks, so that girder is positioned on the same level.
⑹ use the external part of screw rod jockey and short beam and be fixed; Specifically in circular clamp, insert four screw rods, by these four screw rods the external part of anchor clamps with two short beams that load counterforce device is connected, adopt bolt anchoring to consist of connecting bolt, realize anchor clamps and load being connected of counterforce device, the equal joint test linkage of all anchoring piles, consist of reaction frame, the pilot system installation; At this moment, the axis of the end face center of jack, the center of girder and test pile tube is on same straight line, to guarantee that the test connecting device on the anchoring pile is subject to uniform uplift force, and then the reaction frame that the anchoring pile that is connected consists of provides uniform counter-force proportionality action in the pile body of testing pile tube, so that experimental data is more accurate;
⑺ operate jack, the stressed jack-up of reaction frame, and test connecting device evenly is subject to uplift force, and anchoring pile provides counter-force and proportionality action in the test pile tube, and then under the effect of jack, makes the developmental tube pile desired maximum trial load that is put to the test.
In the anchored pile-testing method compression test, with 1.2 times of maximum trial load, choose the engineering pile of right quantity according to site condition and test as anchoring pile, determine anchoring pile design uplift resistance, and anchoring pile uplift resistance (joint of foundation soil, stake) is checked; When adopting engineering pile as anchoring pile, anchoring pile quantity should not be less than 4, and the amount of pulling out on the monitoring anchoring pile, anchoring pile is symmetric centered by the test pile tube, in order to can consist of the reaction frame of stress equalization, about determining of anchoring pile quantity and distributing position: can be first by the selected anchoring pile of experience assessment, 1.2 times of uplift resistances to anchoring pile according to maximum trial load check again, until checking computation results meets the demands, finally determine the quantity of anchoring pile.
Embodiments of the present invention are not limited to this; according to foregoing of the present invention; ordinary skill knowledge and customary means according to this area; do not breaking away under the above-mentioned fundamental technics thought of the present invention prerequisite; the present invention can also make modification, replacement or the change of other various ways, all drops within the rights protection scope of the present invention.
Claims (10)
1. pile tube Vertical Static Loading Test linkage, it is characterized in that: it mainly is comprised of vertical connecting rod and the anchor clamps that are used for the grip tube pile head, the lower end of described connecting rod is connected on the described anchor clamps, the upper end of described connecting rod is used for being connected to the loading counterforce device that is positioned at the pile tube top, be the test pile tube at pile tube described in the resistance to plucking test, by the friction force between anchor clamps and the test pile tube uplift force is passed to the test pile tube, perhaps comprise that at pile tube described in the compression test test pile tube and at least two pairs of symmetries are positioned at the anchoring pile of testing the pile tube periphery, provide the counter-force proportionality action in the test pile tube by the friction force between anchor clamps and the anchoring pile.
2. pile tube Vertical Static Loading Test linkage according to claim 1 is characterized in that: described connecting rod with described anchor clamps, load counterforce device and all link to each other by detachable syndeton.
3. pile tube Vertical Static Loading Test linkage according to claim 2, it is characterized in that: described detachable syndeton is screw connection structure, described anchor clamps mainly are comprised of with the otic placode of being located on the dop outer wall the tubular dop that close fitting is sleeved on the tubular pile head, screw connection structure between described connecting rod and the anchor clamps comprises the screw that is opened on the described otic placode and is located at the screw thread of described connecting rod lower end, and the lower end of described connecting rod is passed behind the described screw by the fixing connecting bolt that forms of nut.
4. pile tube Vertical Static Loading Test linkage according to claim 3 is characterized in that: described tubular dop is formed by the docking of two and half cylindrical shells.
5. pile tube Vertical Static Loading Test linkage according to claim 4, it is characterized in that: on the interface of described two and half cylindrical shells, have respectively overhanging flank, described flank is plate body and extends along the length direction of described half cylindrical shell, after having corresponding screw on the plate face of described flank and being used for passing for bolt by the fixing pile holder bolt that forms of nut.
6. a right to use requires the pilot system of 1 described pile tube Vertical Static Loading Test linkage, it is characterized in that: comprise described pile tube Vertical Static Loading Test linkage and load counterforce device; In the resistance to plucking test, described test connecting device joint test pile tube is passed to the test pile tube with loading counterforce device with uplift force; Perhaps in compression test, described test connecting device connection loading counterforce device and at least two pairs of anchoring piles that are symmetrically distributed in test pile tube periphery are to provide the counter-force proportionality action in the test pile tube.
7. pilot system according to claim 6, it is characterized in that: the loading counterforce device that is used for the resistance to plucking test comprises buttress, girder, loading blocks and short beam, described girder is across being positioned on the described buttress at above the described test pile tube and its two ends, be used for to place lift-up device on the described girder and make its be in the test pile tube directly over, described loading blocks and short beam are superimposed on the end face of described lift-up device from bottom to top successively, the external part that loading blocks becomes short beam is stretched out respectively at the two ends of described short beam, and the external part of described short beam links to each other to realize being connected of loading counterforce device and test pile tube with described test connecting device.
8. pilot system according to claim 6, it is characterized in that: the loading counterforce device that is used for compression test comprises girder, secondary beam and short beam, be used for placing lift-up device on the end face of described test pile tube, described girder is across the top of described test pile tube and is pressed on the lift-up device, described secondary beam with the direction perpendicular to girder make at least its two ends be positioned at described anchoring pile directly over, the secondary beam middle part then is pressed on the girder, described short beam places on the described secondary beam, the external part that secondary beam becomes short beam is stretched out respectively at the two ends of described short beam, and the external part of described short beam and described test connecting device link to each other to realize loading being connected of counterforce device and anchoring pile.
9. the test method of the described pilot system of claim 7 is characterized in that may further comprise the steps:
⑴ check with 1.2 times of uplift resistances to the test pile tube of maximum trial load, selects test connecting device according to checking computation results;
⑵ be sleeved on the anchor clamps close fitting of test connecting device on the pile crown of test pile tube;
⑶ lift girder, make its across be installed in the test pile tube the top, lift-up device is placed on the girder, and be positioned at the test pile tube directly over;
⑷ place loading blocks at the end face of lift-up device, places short beam in loading blocks again;
⑸ the connecting rod jockey of service test linkage and the external part of short beam also are fixed the pilot system installation;
⑹ operate lift-up device, and described test connecting device evenly is subject to uplift force and power transmission to testing pile tube, makes the developmental tube pile desired maximum trial load that is put to the test.
10. the test method of the described pilot system of claim 8 is characterized in that may further comprise the steps:
⑴ choose anchoring pile with 1.2 times of maximum trial load according to the construction plant condition, determines the design uplift resistance of every anchoring pile, and the uplift resistance of anchoring pile is checked, and selects test connecting device according to checking computation results;
⑵ be sleeved on the anchor clamps close fitting of test connecting device on the pile crown of anchoring pile;
⑶ be placed on lift-up device on the end face of test pile tube;
⑷ lift girder, make it across the top that is installed in the test pile tube and be pressed on the lift-up device, perpendicular to the girder direction secondary beam being placed on the girder, and make anchoring pile be positioned at least the secondary beam two ends under;
⑸ place short beam at the two ends of secondary beam at least;
⑹ the connecting rod jockey of service test linkage and the external part of short beam also are fixed, and consist of reaction frame, the pilot system installation;
⑺ operate lift-up device, the stressed jack-up of reaction frame, and test connecting device evenly is subject to uplift force, and anchoring pile provides counter-force and proportionality action in the test pile tube, makes the developmental tube pile desired maximum trial load that is put to the test.
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| CN201210545325.9A CN103031860B (en) | 2012-12-14 | 2012-12-14 | Pipe pile vertical static load testing connection device, and testing system and method using same |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485374A (en) * | 2013-10-12 | 2014-01-01 | 中勘冶金勘察设计研究院有限责任公司 | Static load test anchor pile connecting structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258494Y (en) * | 2008-08-27 | 2009-06-17 | 湖南省第六工程有限公司 | Loading unit for single-pile vertical anti-pulling static load test |
| KR20100031167A (en) * | 2008-09-12 | 2010-03-22 | 김형남 | Apparatus for pile load test |
| CN102134859A (en) * | 2010-01-25 | 2011-07-27 | 常州市建筑科学研究院有限公司 | Uplift resistance test device for pre-stressed pipe pile |
| CN202247969U (en) * | 2011-09-19 | 2012-05-30 | 天津市地质工程勘察院 | Novel static loading test pile head fixing clamp |
| CN202482901U (en) * | 2012-02-28 | 2012-10-10 | 王振东 | Pull-out test steel hoop for prestressed concrete pipe pile |
-
2012
- 2012-12-14 CN CN201210545325.9A patent/CN103031860B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201258494Y (en) * | 2008-08-27 | 2009-06-17 | 湖南省第六工程有限公司 | Loading unit for single-pile vertical anti-pulling static load test |
| KR20100031167A (en) * | 2008-09-12 | 2010-03-22 | 김형남 | Apparatus for pile load test |
| CN102134859A (en) * | 2010-01-25 | 2011-07-27 | 常州市建筑科学研究院有限公司 | Uplift resistance test device for pre-stressed pipe pile |
| CN202247969U (en) * | 2011-09-19 | 2012-05-30 | 天津市地质工程勘察院 | Novel static loading test pile head fixing clamp |
| CN202482901U (en) * | 2012-02-28 | 2012-10-10 | 王振东 | Pull-out test steel hoop for prestressed concrete pipe pile |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485374B (en) * | 2013-10-12 | 2017-02-08 | 中勘冶金勘察设计研究院有限责任公司 | Static load test anchor pile connecting structure |
| CN103485374A (en) * | 2013-10-12 | 2014-01-01 | 中勘冶金勘察设计研究院有限责任公司 | Static load test anchor pile connecting structure |
| CN104328810A (en) * | 2014-11-07 | 2015-02-04 | 广州科技职业技术学院 | Improved method for detecting bearing capacity of precast pipe-pile single-pile foundation |
| CN104328810B (en) * | 2014-11-07 | 2016-08-24 | 广州科技职业技术学院 | Prefabricated tubular pile single pile foundation bearing capacity detection improvement method |
| CN104563168A (en) * | 2014-12-09 | 2015-04-29 | 常州市安贞建设工程检测有限公司 | Multifunctional bend resistance and shear resistance device of prestressed concrete pipe pile |
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| CN105040749A (en) * | 2015-07-24 | 2015-11-11 | 上海港湾工程质量检测有限公司 | Pile foundation pulling resistance and compression resistance test system and test method |
| CN105971038A (en) * | 2016-07-21 | 2016-09-28 | 淮安市建筑科学研究院有限公司 | Pile-anchor-combing-type foundation-basis compression-resistance static-load test system |
| CN105971038B (en) * | 2016-07-21 | 2017-11-24 | 淮安市建筑科学研究院有限公司 | Heap anchor convolution foundation compressive static load test system |
| CN106400852A (en) * | 2016-10-25 | 2017-02-15 | 佛山市禅城区建设工程质量安全检测站 | Test method for vertical compressive bearing capacity of single pile |
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| CN109868835A (en) * | 2017-12-01 | 2019-06-11 | 范新华 | Automatic vending machine anti-tipping apparatus |
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