CN103266635B - A kind of ground anchor type pile foundation static loading test device and test method - Google Patents
A kind of ground anchor type pile foundation static loading test device and test method Download PDFInfo
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- CN103266635B CN103266635B CN201310159408.9A CN201310159408A CN103266635B CN 103266635 B CN103266635 B CN 103266635B CN 201310159408 A CN201310159408 A CN 201310159408A CN 103266635 B CN103266635 B CN 103266635B
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Abstract
The invention discloses a kind of ground anchor type pile foundation static loading test device and test method, jack is settled at the end face center of its test pile, the top of jack is supported on the center of carrier bottom surface, the end face of test pile is mounted with photo-electric pile foundation settlement instrument and pile foundation settlement tracker, photo-electric pile foundation settlement instrument is placed on component, and carrier connects the hole drilling type earth anchor in ground by steel strand.During test, first punch on carrier, inject cement mortar; The steel wire bundle of the hole drilling type earth anchor of drawing in ground; Jack and pile foundation settlement tracker are installed; Carry out the static loading test of pile foundation.The present invention adopts hole drilling type earth anchor, carrier etc., and the hole drilling type earth anchor of the reaction force of static load of pile foundation by the depths of ground is born, the impact that can not to damage etc. the foundation soil around test pile and other pile foundations.In addition, the present invention carries the feature that tonnage is large, precision is high, it is little to disturb, Automatic continuous is tested, for dead load test on pile foundation provides new plant and instrument.
Description
Technical field
The invention belongs to static load of pile foundation studying technological domain, particularly relate to a kind of ground anchor type pile foundation static loading test device and test method.
Background technology
At present, the loading method carrying out dead load test on pile foundation has accumulation load method or anchored pile-testing method, carrying out foundation pile settlement test method is that the support setting up long distance fixes tangent displacement sensor, such loading and detection method also exist following problem: because the equalization point difficulty piling up limited mass and preloading of accumulation load method controls, so be not suitable for large-tonnage dead load test on pile foundation; Because anchored pile-testing method to adopt near test pile working pile to be around anchoring pile, once there is unbalance loading or overload, there is working pile by drawing crack or the danger of breaking; Support due to long distance is subject to the impact such as temperature, vibration and produces distortion, the problem causing the not enough or test data of settling amount measuring accuracy unreliable etc.
Summary of the invention
The object of the present invention is to provide a kind of ground anchor type pile foundation static loading test device and test method, being intended to solve existing anchored pile-testing method adopts the working pile around near test pile to be anchoring pile, there is working pile by drawing crack or the danger of breaking, support is subject to the impact such as temperature, vibration and produces distortion, the problem causing the not enough or test data of settling amount measuring accuracy unreliable etc.
The present invention realizes like this, a kind of ground anchor type pile foundation static loading test device, described ground anchor type pile foundation static loading test device comprises: test pile, jack, carrier, ground, component, hole drilling type earth anchor, photo-electric pile foundation settlement instrument, pile foundation settlement tracker;
Described jack is settled at the end face center of described test pile, the top of described jack is supported on the center of described carrier bottom surface, the end face of described test pile is mounted with described photo-electric pile foundation settlement instrument and pile foundation settlement tracker, described photo-electric pile foundation settlement instrument is settled on the members, and described carrier connects the hole drilling type earth anchor in described ground by steel strand.
Further, described hole drilling type earth anchor comprises: steel wire bundle, anchor head, ground tackle drill bit, cross formula cutter, anchor body shell, tool joint, steel wire bundle ground tackle, spademan mouth, bearing pin, the anchoring wing, wire rope;
The upper part of described hole drilling type earth anchor arranges described steel wire bundle, lower part arranges described anchor head, the centre of described anchor head inside arranges described ground tackle drill bit, the upper end of described ground tackle drill bit connects described steel wire bundle, anchor body shell described in the arranged outside of described ground tackle drill bit, the bottom of described ground tackle drill bit arranges described cross formula cutter, top arranges described tool joint and steel wire bundle ground tackle, described anchor body shell bilateral symmetry arranges described spademan mouth, described bearing pin is disposed radially in described anchor body shell, described pin sleeve is equipped with the described anchoring wing, the lower end of the described anchoring wing arranges described wire rope.
Further, described carrier is I-shape construction.
Further, described point of anchor head be that diameter is greater than boring aperture, the cylindrical piece be made up of the cement mortar through stirring and foundation soil mixture.
Further, described wire rope, the anchoring wing, spademan mouth, form V-shape.
Further, described photo-electric pile foundation settlement instrument comprises: base, chassis, case, leveling bolt, horizontally rotate device, bubble, data display equipment, support, generating laser;
Described photo-electric pile foundation settlement instrument from bottom to top described base, chassis and case successively, described base connecting base plate, device is horizontally rotated described in chassis in described case is provided with, the described top board horizontally rotating device arranges described support, bubble and data display equipment, describedly horizontally rotate the top board that device is arranged on described bubble, described support level arranges described generating laser.
Further, described base is by the leveling bolt connecting base plate of three equidistant placement.
Further, described pile foundation settlement tracker comprises: case, base plate, fixed mount, slowspeed machine, slide rail, displacement transducer, belt-pulley hub, belt, slide block, upper limit position switch, lower position switch, sliding door, clearance type laser pickoff, casing, transmissive mirror, modulation panel, modulation gap, circuit board, the first light-sensitive element, the second light-sensitive element, the 3rd light-sensitive element;
Base plate in described case arranges described fixed mount, the hypomere of described fixed mount arranges described motor, stage casing arranges described slide rail, epimere arranges institute's displacement sensors, the main shaft of described motor and displacement transducer is each passed through the preformed hole of described fixed mount, the another side of described fixed mount arranges described belt-pulley hub, described belt-pulley hub arranges described belt
Described slide rail arranges described slide block, described slide block arranges the clearance type laser pickoff of described horizontal setting, described slide block connects described belt, the upper end of described slide rail is provided with described upper limit position switch, lower end arranges described lower position switch, and described case arranges described sliding door, and the front end face of described casing arranges described transmissive mirror, in casing after described transmissive mirror, described modulation panel is set
There is the described modulation gap of a level at described modulation panel center, the top in described modulation gap arranges described first light-sensitive element, arrange described second light-sensitive element below described modulation gap, in described casing, there is the 3rd light-sensitive element at the circuit board center at rear end face place.
Further, the step of the test method of described ground anchor type pile foundation static loading test device is:
Carrier punches, injects cement mortar;
The steel wire bundle of the hole drilling type earth anchor of drawing in ground;
Jack and pile foundation settlement tracker are installed;
Carry out the static loading test of pile foundation.
Further, the concrete steps of the test method of described ground anchor type pile foundation static loading test device are:
In the first step, ground centered by test pile, earth anchor setting-out is carried out according to four end positions of carrier, rig is settled one by one in earth anchor layout point, boring reaches projected depth, and position reaming bottom hole, press-in cement mortar, with after foundation soil stirs into and mixes stock column block, have the ground tackle drill bit of steel wire bundle to rest in mixing stock column block anchoring to form anchor head, exit drilling rod, after cement-soil compound solidifies, form hole drilling type earth anchor;
Second step, above test pile assembled carrier, and in four ends of carrier, the anchor steel wire bundle of hole drilling type earth anchor of firmly drawing in ground respectively;
3rd step, at test pile end face, jack and pile foundation settlement tracker are installed, away from after the component of test pile being arranged photo-electric pile foundation settlement instrument, carry out the prestrain debugging of photo-electric pile foundation settlement instrument and jack hydraulic system;
4th step, beginning static loading test, in whole process of the test, the horizontal laser light that pile foundation settlement tracker is launched from motion tracking photo-electric pile foundation settlement instrument, the settling data of display, storage test stake in real time;
5th step, process carry out multistage loadings and the cyclic test unloaded step by step by design, and dead load test on pile foundation is complete.
Ground anchor type pile foundation static loading test device of the present invention and test method, by adopting hole drilling type earth anchor, carrier, pile foundation settlement tracker, the hole drilling type earth anchor of the reaction force of static load of pile foundation by the depths of ground is born, the impact that can not to damage etc. the foundation soil around test pile and other pile foundations.In addition, the present invention carries the feature that tonnage is large, precision is high, it is little to disturb, Automatic continuous is tested, for dead load test on pile foundation provides new plant and instrument.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ground anchor type pile foundation static loading test device that the embodiment of the present invention provides;
Fig. 2 is the top view of the ground anchor type pile foundation static loading test device that the embodiment of the present invention provides;
Fig. 3 is the structural representation of the hole drilling type earth anchor that the embodiment of the present invention provides;
Fig. 4 is the lateral view of the hole drilling type earth anchor that the embodiment of the present invention provides;
Fig. 5 is the structural representation of the photo-electric pile foundation settlement instrument that the embodiment of the present invention provides;
Fig. 6 is the lateral view of the photo-electric pile foundation settlement instrument that the embodiment of the present invention provides;
Fig. 7 is the top view of the photo-electric pile foundation settlement instrument that the embodiment of the present invention provides;
Fig. 8 is the structural representation of the sedimentation tracker that the embodiment of the present invention provides;
Fig. 9 is the lateral view of the sedimentation tracker that the embodiment of the present invention provides;
Figure 10 is the top view of the sedimentation tracker that the embodiment of the present invention provides;
Figure 11 is the structural representation of the clearance type laser pickoff that the embodiment of the present invention provides;
Figure 12 is the lateral view of the clearance type laser pickoff that the embodiment of the present invention provides;
Figure 13 is the top view of the clearance type laser pickoff that the embodiment of the present invention provides;
Figure 14 is the flow chart of the ground anchor type dead load test on pile foundation method that the embodiment of the present invention provides.
In figure: 1, test pile; 2, jack; 3, carrier; 4, ground; 5, component; 6, hole drilling type earth anchor; 6-1, steel wire bundle; 6-2, anchor head; 6-3, ground tackle drill bit; 6-4, cross formula cutter; 6-5, anchor body shell; 6-6, tool joint; 6-7, steel wire bundle ground tackle; 6-8, spademan mouth; 6-9, bearing pin; 6-10, the anchoring wing; 6-11, wire rope; 7, photo-electric pile foundation settlement instrument; 7-1, base; 7-2, chassis; 7-3, case; 7-4, leveling bolt; 7-5, horizontally rotate device; 7-6, bubble; 7-7, data display equipment; 7-8, support; 7-9, generating laser; 8, pile foundation settlement tracker; 8-1, case; 8-2, base plate; 8-3, fixed mount; 8-4, slowspeed machine; 8-5, slide rail; 8-6, displacement transducer; 8-7, belt-pulley hub; 8-8, belt; 8-9, slide block; 8-10, upper limit position switch; 8-11, lower position switch; 8-12, sliding door; 8-13, clearance type laser pickoff; 8-14, casing; 8-15, transmissive mirror; 8-16, modulation panel; 8-17, modulation gap; 8-18, circuit board; 8-19, the first light-sensitive element; 8-20, the second light-sensitive element; 8-21, the 3rd light-sensitive element.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 shows ground anchor type pile foundation static loading test device structure provided by the invention.For convenience of explanation, illustrate only part related to the present invention.
Ground anchor type pile foundation static loading test device of the present invention, this ground anchor type pile foundation static loading test device comprises: test pile, jack, carrier, ground, component, hole drilling type earth anchor, photo-electric pile foundation settlement instrument, pile foundation settlement tracker;
Jack is settled at the end face center of test pile, the top of jack is supported on the center of carrier bottom surface, the end face of test pile is mounted with photo-electric pile foundation settlement instrument and pile foundation settlement tracker, photo-electric pile foundation settlement instrument is placed on component, and carrier connects the hole drilling type earth anchor in ground by steel strand.
As a prioritization scheme of the embodiment of the present invention, hole drilling type earth anchor comprises: steel wire bundle, anchor head, ground tackle drill bit, cross formula cutter, anchor body shell, tool joint, steel wire bundle ground tackle, spademan mouth, bearing pin, the anchoring wing, wire rope;
The upper part of hole drilling type earth anchor arranges steel wire bundle, lower part arranges anchor head, the centre of anchor head inside arranges ground tackle drill bit, and the upper end of ground tackle drill bit connects steel wire bundle, the arranged outside anchor body shell of ground tackle drill bit, the bottom of ground tackle drill bit arranges cross formula cutter, top arranges tool joint and steel wire bundle ground tackle, and anchor body shell bilateral symmetry arranges spademan mouth, is disposed radially bearing pin in anchor body shell, pin sleeve is equipped with the anchoring wing, and the lower end of the anchoring wing arranges wire rope.
As a prioritization scheme of the embodiment of the present invention, carrier is I-shape construction.
As a prioritization scheme of the embodiment of the present invention, a point anchor head is that diameter is greater than boring aperture, the cylindrical piece be made up of the cement mortar through stirring and foundation soil mixture.
As a prioritization scheme of the embodiment of the present invention, wire rope, the anchoring wing, spademan mouth, form V-shape.
As a prioritization scheme of the embodiment of the present invention, photo-electric pile foundation settlement instrument comprises: base, chassis, case, leveling bolt, horizontally rotate device, bubble, data display equipment, support, generating laser;
Photo-electric pile foundation settlement instrument from bottom to top base, chassis and case successively, base connecting base plate, chassis in case is provided with and horizontally rotates device, the top board horizontally rotating device arranges support, bubble and data display equipment, horizontally rotate the top board that device is arranged on bubble, support level arranges generating laser.
As a prioritization scheme of the embodiment of the present invention, base is by the leveling bolt connecting base plate of three equidistant placement.
As a prioritization scheme of the embodiment of the present invention, pile foundation settlement tracker comprises: case, base plate, fixed mount, slowspeed machine, slide rail, displacement transducer, belt-pulley hub, belt, slide block, upper limit position switch, lower position switch, sliding door, clearance type laser pickoff, casing, transmissive mirror, modulation panel, modulation gap, circuit board, the first light-sensitive element, the second light-sensitive element, the 3rd light-sensitive element;
Base plate in case arranges fixed mount, and the hypomere of fixed mount arranges motor, and stage casing arranges slide rail, epimere arranges displacement transducer, and the main shaft of motor and displacement transducer is each passed through the preformed hole of fixed mount, and the another side of fixed mount arranges belt-pulley hub, belt-pulley hub arranges belt
Slide rail arranges slide block, and slide block arranges the clearance type laser pickoff of horizontal setting, and slide block connects belt, the upper end of slide rail is provided with upper limit position switch, and lower end arranges lower position switch, and case arranges sliding door, the front end face of casing arranges transmissive mirror, arranges modulation panel in the casing after transmissive mirror
There is the modulation gap of a level at modulation panel center, and the top in modulation gap arranges the first light-sensitive element, and modulation arranges the second light-sensitive element below gap, and in casing, there is the 3rd light-sensitive element at the circuit board center at rear end face place.
As a prioritization scheme of the embodiment of the present invention, the step of the test method of ground anchor type pile foundation static loading test device is:
Carrier punches, injects cement mortar;
The steel wire bundle of the hole drilling type earth anchor of drawing in ground;
Jack and pile foundation settlement tracker are installed;
Carry out the static loading test of pile foundation.
As a prioritization scheme of the embodiment of the present invention, the concrete steps of the test method of ground anchor type pile foundation static loading test device are:
In the first step, ground centered by test pile, earth anchor setting-out is carried out according to four end positions of carrier, rig is settled one by one in earth anchor layout point, boring reaches projected depth, and position reaming bottom hole, press-in cement mortar, with after foundation soil stirs into and mixes stock column block, have the ground tackle drill bit of steel wire bundle to rest in mixing stock column block anchoring to form anchor head, exit drilling rod, after cement-soil compound solidifies, form hole drilling type earth anchor;
Second step, above test pile assembled carrier, and in four ends of carrier, the anchor steel wire bundle of hole drilling type earth anchor of firmly drawing in ground respectively;
3rd step, at test pile end face, jack and pile foundation settlement tracker are installed, away from after the component of test pile being arranged photo-electric pile foundation settlement instrument, carry out the prestrain debugging of photo-electric pile foundation settlement instrument and jack hydraulic system;
4th step, beginning static loading test, in whole process of the test, the horizontal laser light that pile foundation settlement tracker is launched from motion tracking photo-electric pile foundation settlement instrument, the settling data of display, storage test stake in real time;
5th step, process carry out multistage loadings and the cyclic test unloaded step by step by design, and dead load test on pile foundation is complete.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
As depicted in figs. 1 and 2, the ground anchor type pile foundation static loading test device of the embodiment of the present invention forms primarily of test pile 1, jack 2, carrier 3, ground 4, component 5, hole drilling type earth anchor 6, photo-electric pile foundation settlement instrument 7, pile foundation settlement tracker 8; Jack 2 is mounted with at the end face center of test pile 1, the top of jack 2 is supported on the center of carrier 3 bottom surface, the pile foundation settlement tracker 8 of photo-electric pile foundation settlement instrument 31 is also mounted with at the end face of test pile 1, and photo-electric pile foundation settlement instrument 7 is placed on component 5 away from test pile 1 and relatively unshift, carrier 3 is " work " character form structure, this carrier 3 four ends respectively anchoring have a branch of steel strand 6-1, often restraint steel strand 6-1 and be connected to hole drilling type earth anchor 6 in ground 4;
As shown in Figure 3 and Figure 4, the top of hole drilling type earth anchor 6 is divided into the outer steel wire bundle 6-1 wrapping up in cement mortar, bottom is divided into anchor head 6-2, anchor head 6-2 is cylindrical piece shape, its diameter is greater than boring aperture several times, be made up of the cement mortar through stirring and foundation soil mixture, the centre of its inside stops holes, the ground tackle drill bit 6-3 of reaming, the upper end of this ground tackle drill bit 6-3 with steel wire bundle 6-1 be connected, the anchor body shell 6-5 of ground tackle drill bit 6-3 is drum, there is cross formula cutter 6-4 its bottom, tool joint 6-6 and steel wire bundle ground tackle 6-7 is arranged at top, respectively there is a strip spademan mouth 6-8 this anchor body shell 6-5 bilateral symmetry position, anchor body shell 6-5 in be disposed radially bearing pin 6-9, bearing pin 6-9 is set with two fan anchoring wing 6-10, the lower end bolt often fanning anchoring wing 6-10 has wire rope 6-11, fasten the wire rope 6-11 on two fan anchoring wing 6-10 respectively, be merged into a strand steel wire rope in anchor body shell 6-5 chamber after, draw from the centre bore of steel wire bundle ground tackle 6-7, anchoring wing 6-10 in being vertically contained in the cylinder chamber of anchor body shell 6-5, wire rope 6-11 can be pulled, two fan anchoring wing 6-10 can be made simultaneously to launch outside respective spademan mouth 6-8, form " V " word shape,
As Fig. 5, shown in Fig. 6 and Fig. 7, photo-electric pile foundation settlement instrument of the present invention, photo-electric pile foundation settlement instrument 7 from bottom to top has base 7-1 successively, chassis 7-2 and case 7-3, the leveling bolt 7-4 of three equidistant placement is had to be connected between base 7-1 with chassis 7-2, chassis 7-2 in case 7-3 is mounted with and horizontally rotates device 7-5, the top board horizontally rotating device 7-5 is mounted with support 7-8, bubble 7-6, data display equipment 7-7, rotate the knob horizontally rotating device 7-5, the top board horizontally rotating device 7-5 can be made to horizontally rotate within the scope of 90 °, support 7-8 there is horizontally disposed generating laser 7-9,
As shown in Fig. 8-Figure 13, pile foundation settlement tracker of the present invention, the case 8-1 of pile foundation settlement tracker 8 is rounded bullet shape shape, base plate 8-2 in case 8-1 is mounted with vertical fixed mount 8-3, the hypomere of fixed mount 8-3 is mounted with slowspeed machine 8-4, stage casing is mounted with slide rail 8-5, epimere is mounted with displacement transducer 8-6, the main shaft of slowspeed machine 8-4 and displacement transducer 8-6 is each passed through the preformed hole of fixed mount 8-3, belt-pulley hub 8-7 is settled separately in the another side of fixed mount 8-3, on these two belt-pulley hub 8-7, cover has belt 8-8, slide rail 8-5 there is the slide block 8-9 sliding and arrange, slide block 8-9 there is the clearance type laser pickoff 8-10 of horizontal setting, this slide block 8-9 again with belt 8-8 be connected, slowspeed machine 8-4 is while belt 8-8 transmission position displacement sensor 8-6, clearance type laser pickoff 8-13 is driven vertically to slide on slide rail 8-5, there is upper limit position switch 8-10 the upper end of slide rail 8-5, there is lower position switch 8-11 its lower end, case 8-1 on have sliding door 8-12, the casing 8-14 of clearance type laser pickoff 8-13 is drum, the front end face of this casing 8-14 there is transmissive mirror 8-15, modulation panel 8-16 is had in casing 8-14 after transmissive mirror 8-15, there is the modulation gap 8-17 of a level at modulation panel 8-16 center, there is the first light-sensitive element 8-19 the top of adjacent modulation gap 8-17, the second light-sensitive element 8-12 is had below adjacent modulation gap 8-17, in casing 8-14, there is the second light-sensitive element 8-20 at the circuit board 8-18 center at rear end face place, the horizontal laser light sent as the generating laser 7-9 of photo-electric pile foundation settlement instrument 7 and modulation gap 8-17, when second light-sensitive element 8-20 is the same face, second light-sensitive element 8-20 just can receive laser.
As shown in figure 14, the ground anchor type dead load test on pile foundation method of the embodiment of the present invention, comprises the following steps:
S101: punch on carrier, injects cement mortar;
S102: the steel wire bundle of the hole drilling type earth anchor of drawing in ground;
S103: install jack and pile foundation settlement tracker;
S104: the static loading test of carrying out pile foundation.
The ground anchor type dead load test on pile foundation method of the embodiment of the present invention, specifically comprises the following steps: first, on the ground centered by test pile 1, carries out earth anchor setting-out according to four end positions of carrier 3; Rig is settled one by one in earth anchor layout point, boring reaches projected depth, and position reaming bottom hole, press-in cement mortar, with after foundation soil stirs into and mixes stock column block, there is the ground tackle drill bit 6-3 of steel wire bundle 6-1 to rest in mixing stock column block anchoring and form anchor head 6-2, exit drilling rod, after cement-soil compound solidifies, form hole drilling type earth anchor 6; Then, assembled carrier 3 above test pile 1, and in four ends of carrier 3, the steel wire bundle 6-1 of the hole drilling type earth anchor 6 of drawing in ground 4 lived by anchor respectively; Subsequently, settle jack 2 and pile foundation settlement tracker 8 at test pile 1 end face, away from after photo-electric pile foundation settlement instrument 7 settled by the component 5 of test pile 1, carry out the prestrain debugging of photo-electric pile foundation settlement instrument 7 and jack 2 hydraulic system etc.; Then, start static loading test, in whole process of the test, the horizontal laser light that pile foundation settlement tracker 8 is launched from motion tracking photo-electric pile foundation settlement instrument 7, the settling data of display, storage test stake 1 in real time; Finally, through carrying out multistage loadings and the cyclic test unloaded step by step by design, dead load test on pile foundation is complete.
Operating principle of the present invention is: the effect of test pile 1 is the supporting capacity of detection of pier foundation, and the effect of jack 2 is loading equipemtns, and the effect of carrier 3 is that the reaction force of jack 2 is passed to hole drilling type earth anchor 6 at a distance; The effect of ground 4 is bear test pile 1 stressed; Photo-electric pile foundation settlement instrument 7 is settled in the effect of component 5; The effect of hole drilling type earth anchor 6 is the reaction forces bearing test pile 1 static load; The effect of steel wire bundle 6-1 is that carrier 3 is connected to anchor head 6-2, and transmits the reaction force of static load; The effect of anchor head 6-2 is the weight utilizing ground 4 soil, strengthens anchor-hold; The effect of ground tackle drill bit 6-3 becomes compound body at ground 4 internal drilling, reaming, the mortar that mixes cement with ground 4 soil, and rest in compound body and become anchor head 6-2; The effect of cross formula cutter 6-4 is in the native internal drilling of ground 4; The effect of anchor body shell 6-5 is fixed cross formula cutter 6-4, tool joint 6-6, steel wire bundle ground tackle 6-7, settles two fan anchoring wing 6-10 in its chamber; The effect of tool joint 6-6 is jointed rod; The effect of steel wire bundle ground tackle 6-7 is anchoring steel wire bundle 6-1; The effect of spademan mouth 6-8 allows anchoring wing 6-10 put on display in anchor body shell 6-5; The effect of bearing pin 6-9 slides to settle anchoring wing 6-10; The effect of anchoring wing 6-10 is reaming, mix cement mortar and ground 4 soil, is the part of anchor head 6-2 force structure; The effect of wire rope 6-1 launches anchoring wing 6-10; The effect of photo-electric pile foundation settlement instrument 7 is main frames, sends the horizontal laser light of level altitude to pile foundation settlement tracker 8; The effect of base 7-1 is fixed light electric-type pile foundation settlement instrument 7; The effect of chassis 7-2 settles to horizontally rotate superstructure and the fixing case 7-3 such as device 7-5; The effect of case 7-3 is protection generating laser 7-9; The effect of leveling bolt 7-4 is adjusted to horizontal plane by horizontally rotating device 7-5 end face; The effect horizontally rotating device 7-5 is the laser emission angle adjusting generating laser 7-9 within the scope of 90 °; The effect of bubble 7-6 is the reference system horizontally rotating device 7-5 end face level; The effect of data display equipment 7-7 is the display of controller and pile foundation settlement value; The effect of support 7-8 is fixed laser transmitter 7-9; The effect of generating laser 7-9 launches horizontal laser light to pile foundation settlement tracker 8; The effect of pile foundation settlement tracker 8 accepts the laser that generating laser 7-9 sends, the sedimentation of tracking test stake 1; The built-in equipment such as displacement transducer 47, clearance type laser pickoff 61 is protected in the effect of case 42, settles sliding door 8-12; The effect of base plate 8-2 is fixing pile foundation settlement tracker 8; The effect of fixed mount 8-3 is fixing slowspeed machine 8-4, slide rail 8-5, displacement transducer 8-6 etc.; The effect of slowspeed machine 8-4 is to provide the power of transmission position displacement sensor 8-6, clearance type laser pickoff 8-13 etc.; The effect of slide rail 8-5 slides to settle slide block 8-9, allows clearance type laser pickoff 8-13 vertically move; The effect of displacement transducer 8-6 is the settling amount of sensing pile foundation 1; The effect of belt-pulley hub 8-7 is placed on belt 8-8; The effect of belt 8-8 connects belt-pulley hub 8-7 to transmit power, and connection sliding block 8-9; The effect of slide block 8-9 is fixing clearance type laser pickoff 8-13; The effect of upper limit position switch 8-10 is restriction slide block 8-9 upwards slippage, sends the signal of slowspeed machine 8-4 shutdown to main frame; The effect of lower position switch 8-11 is the downward slippage of restriction slide block 8-9, sends the signal of slowspeed machine 8-4 shutdown to main frame; The effect of sliding door 8-12 is when the good case 8-1 of cover, opens sliding door 8-12, the horizontal laser light allowing clearance type laser pickoff 8-13 receive photo-electric pile foundation settlement instrument 7 generating laser 7-9 to send; The effect of clearance type laser pickoff 8-13 is the sensing element receiving horizontal laser light; Transmissive mirror 8-15, modulation panel 8-16, circuit board 8-18 are settled in the effect of casing 8-14; The effect of transmissive mirror 8-15 allows laser inject in casing 8-14, and dust-proof etc.; The effect of modulation panel 8-16 arranges modulation gap 8-17, settles the first light-sensitive element 8-19 and the 3rd light-sensitive element 8-21; The effect of modulation gap 8-17 is can only by being mapped to the horizontal laser light on the second light-sensitive element 8-20, to improve measuring accuracy; The effect of circuit board 8-18 is the second light-sensitive element 8-20; The effect of the first light-sensitive element 8-19 contributes to differentiating test pile 1 whether sedimentation; The effect of the second light-sensitive element 8-20 is the sensing element of test pile 1 sedimentation value; The effect of the 3rd light-sensitive element 8-21 contributes to differentiating test pile 1 whether lifting,
The performance of ground anchor type pile foundation static loading test device: test pile is driven pile or bored pile etc.; Static load: 3000KN; Range: 0 ~ 500mm; Precision: ± 1%mm.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a ground anchor type pile foundation static loading test device, is characterized in that, described ground anchor type pile foundation static loading test device comprises: test pile, jack, carrier, ground, component, hole drilling type earth anchor, photo-electric pile foundation settlement instrument, pile foundation settlement tracker;
The end face center of described test pile arranges described jack, the top of described jack is bearing in the center of described carrier bottom surface, the end face of described test pile is provided with described photo-electric pile foundation settlement instrument and pile foundation settlement tracker, described photo-electric pile foundation settlement instrument is arranged on the members, and described carrier connects the hole drilling type earth anchor in described ground by steel strand;
Described photo-electric pile foundation settlement instrument comprises: base, chassis, case, leveling bolt, horizontally rotate device, bubble, data display equipment, support, generating laser;
Described photo-electric pile foundation settlement instrument from bottom to top sets gradually described base, chassis and case, described base connecting base plate, device is horizontally rotated described in chassis in described case is provided with, the described top board horizontally rotating device arranges described support, bubble and data display equipment, describedly horizontally rotate the top board that device is arranged on described bubble, described support level arranges described generating laser;
Described pile foundation settlement tracker comprises: case, base plate, fixed mount, slowspeed machine, slide rail, displacement transducer, belt-pulley hub, belt, slide block, upper limit position switch, lower position switch, sliding door, clearance type laser pickoff, casing, transmissive mirror, modulation panel, modulation gap, circuit board, the first light-sensitive element, the second light-sensitive element, the 3rd light-sensitive element;
Base plate in described case arranges described fixed mount, the hypomere of described fixed mount arranges described motor, stage casing arranges described slide rail, epimere arranges institute's displacement sensors, the main shaft of described motor and displacement transducer is each passed through the preformed hole of described fixed mount, the another side of described fixed mount arranges described belt-pulley hub, described belt-pulley hub arranges described belt
Described slide rail arranges described slide block, described slide block arranges the clearance type laser pickoff of described horizontal setting, described slide block connects described belt, the upper end of described slide rail is provided with described upper limit position switch, lower end arranges described lower position switch, and described case arranges described sliding door, and the front end face of described casing arranges described transmissive mirror, in casing after described transmissive mirror, described modulation panel is set
There is the described modulation gap of a level at described modulation panel center, the top in described modulation gap arranges described first light-sensitive element, arrange described second light-sensitive element below described modulation gap, in described casing, there is the 3rd light-sensitive element at the circuit board center at rear end face place;
Described hole drilling type earth anchor comprises: steel wire bundle, anchor head, ground tackle drill bit, cross formula cutter, anchor body shell, tool joint, steel wire bundle ground tackle, spademan mouth, bearing pin, the anchoring wing, wire rope;
The upper part of described hole drilling type earth anchor arranges described steel wire bundle, lower part arranges described anchor head, the centre of described anchor head inside arranges described ground tackle drill bit, the upper end of described ground tackle drill bit connects described steel wire bundle, anchor body shell described in the arranged outside of described ground tackle drill bit, the bottom of described ground tackle drill bit arranges described cross formula cutter, top arranges described tool joint and steel wire bundle ground tackle, described anchor body shell bilateral symmetry arranges described spademan mouth, described bearing pin is disposed radially in described anchor body shell, described pin sleeve is equipped with the described anchoring wing, the lower end of the described anchoring wing arranges described wire rope,
Described carrier is I-shape construction;
Described wire rope, the anchoring wing, spademan mouth, form V-shape;
Described base is by the leveling bolt connecting base plate of three equidistant placement.
2. ground anchor type pile foundation static loading test device as claimed in claim 1, it is characterized in that, the step of the test method of described ground anchor type pile foundation static loading test device is:
Carrier punches, injects cement mortar;
The steel wire bundle of the hole drilling type earth anchor of drawing in ground;
Jack and pile foundation settlement tracker are installed;
Carry out the static loading test of pile foundation.
3. ground anchor type pile foundation static loading test device as claimed in claim 1, it is characterized in that, the concrete steps of the test method of described ground anchor type pile foundation static loading test device are:
In the first step, ground centered by test pile, earth anchor setting-out is carried out according to four end positions of carrier, rig is settled one by one in earth anchor layout point, boring reaches projected depth, and position reaming bottom hole, press-in cement mortar, with after foundation soil stirs into and mixes stock column block, have the ground tackle drill bit of steel wire bundle to rest in mixing stock column block anchoring to form anchor head, exit drilling rod, after cement-soil compound solidifies, form hole drilling type earth anchor;
Second step, above test pile assembled carrier, and in four ends of carrier, the anchor steel wire bundle of hole drilling type earth anchor of firmly drawing in ground respectively;
3rd step, at test pile end face, jack and pile foundation settlement tracker are installed, away from after the component of test pile being arranged photo-electric pile foundation settlement instrument, carry out the prestrain debugging of photo-electric pile foundation settlement instrument and jack hydraulic system;
4th step, beginning static loading test, in whole process of the test, the horizontal laser light that pile foundation settlement tracker is launched from motion tracking photo-electric pile foundation settlement instrument, the settling data of display, storage test stake in real time;
5th step, process carry out multistage loadings and the cyclic test unloaded step by step by design, and dead load test on pile foundation is complete.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103741726B (en) * | 2014-01-02 | 2015-08-12 | 山西省第二建筑工程公司 | A kind of open caisson settlement measurement metering method |
| CN104846855B (en) * | 2015-06-02 | 2017-01-18 | 江西环球岩土科技有限公司 | Detection method of anchoring static load apparatus |
| CN107386339B (en) * | 2017-07-19 | 2018-04-13 | 海南方能测试技术有限公司 | A kind of device for being used to measure pile foundation load |
| CN107447795B (en) * | 2017-07-31 | 2018-04-13 | 海南方能测试技术有限公司 | A kind of pile measurement device and detection method |
| CN108547334A (en) * | 2018-06-04 | 2018-09-18 | 陆剑 | Resistance support cylinder and its application method and dead-load detection method |
| CN109724864B (en) * | 2019-01-23 | 2019-11-26 | 中国海洋大学 | It tests the more loads of ocean engineering pile foundation-soil dynamic response and couples loading device |
| CN110097797A (en) * | 2019-05-31 | 2019-08-06 | 中铁十一局集团第一工程有限公司 | A kind of pile measurement teaching platform |
| CN113432996B (en) * | 2021-06-22 | 2022-11-04 | 浙江创新工程检测有限公司 | Static load detection equipment for concrete beam |
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