CN109440843A - A kind of Model Pile laboratory test combined load bringing device and method - Google Patents

A kind of Model Pile laboratory test combined load bringing device and method Download PDF

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Publication number
CN109440843A
CN109440843A CN201811581722.5A CN201811581722A CN109440843A CN 109440843 A CN109440843 A CN 109440843A CN 201811581722 A CN201811581722 A CN 201811581722A CN 109440843 A CN109440843 A CN 109440843A
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China
Prior art keywords
pulley
load
mouth
speaks
model pile
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CN201811581722.5A
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Chinese (zh)
Inventor
张磊
甘浩
海维深
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN201811581722.5A priority Critical patent/CN109440843A/en
Publication of CN109440843A publication Critical patent/CN109440843A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00Testing foundations or foundation structures

Abstract

The invention discloses a kind of Model Pile laboratory test combined load bringing device and method, Model Pile of the pre-plugged in model slot in the soil body, model slot both ends are equipped with longitudinal channel steel, longitudinal channel steel shape of the mouth as one speaks component horizontal positioned by connector connection;The pulley vertically loaded is fixed on shape of the mouth as one speaks component;Run through a screw rod parallel with shape of the mouth as one speaks component screw rod in Model Pile, screw rod both ends connect vertical loading device by vertically load wirerope;Horizontal loading apparatus is connected by the pulley that horizontal addload wirerope bypasses the horizontal addload on the shape of the mouth as one speaks component placed vertically on the steel bushing of Model Pile;By screwing horizontal positioned shape of the mouth as one speaks component and the flower basket bolt at the non-load end of shape of the mouth as one speaks component placed vertically, the pulley sliding of the pulley and horizontal addload that vertically load is controlled, vertical and horizontal loading is applied to Model Pile.The present invention provides a kind of device of load for improving test accuracy for laboratory test of the Model Pile under combined load effect.

Description

A kind of Model Pile laboratory test combined load bringing device and method
Technical field
The present invention relates to model test fields, and in particular to a kind of Model Pile laboratory test combined load bringing device and one Kind Model Pile Experimental Method in Laboratory.
Background technique
Pile foundation is a kind of high, applied widely, long history base form of bearing capacity.With mentioning for production level High and science and technology development, type, technique, design theory, calculation method and the application range of pile foundation have very big hair Exhibition.But load is mostly used for load metamorphism behavior study of the pile foundation under combined load effect in engineering practice at this stage Divide the method calculated, Vertical Load and horizontal loading separate computations are explored to pile foundation bearing characters.Due to lacking between load The consideration of application sequence, applying mode etc., so that there are certain security risks for research.There is it to be difficult to overcome in view of in-situ test Limitation, and model test can according to need more accurate setting and control boundary condition, stake soil material characteristic, combined load Application sequence and Vertical Load and the accounting of horizontal loading when studying interaction between pile and soil with more clear specific aim and mesh Property, the information of acquisition is more more than in-situ test and static test, numerical simulation analysis can also be verified, so some scholars Take up to study bearer properties of the pile foundation indoors in model test, to provide reference for engineering practice.However some are learned Person mostly uses reaction beam and jack to be further applied load when the pile foundation bearer properties model test under load action is combined in research, And jack is further applied load maximum the disadvantage is that needing continuous ftercompction, it is unstable that this will lead to load application, and makes to test Complexity increases;Meanwhile the components such as reaction beam and jack due to volume it is larger, will affect experimenter be clearly viewed model examination Change procedure is tested, so ad hoc this loading device of meter is to be preferably model test service.
Summary of the invention
To solve drawbacks described above existing in the prior art, it is an object of the invention to improve under existing combined load effect Pile-soil interaction research method, and for Model Pile combined load effect under laboratory test provide a kind of load device and Test method.
The present invention is realized by following technical proposals.
A kind of Model Pile laboratory test combined load bringing device, including model slot and the pre-plugged soil body in model slot In Model Pile;It is provided with a pair of longitudinal channel steel on the model slot, passes through flower basket bolt connection one on longitudinal channel steel A horizontal positioned shape of the mouth as one speaks component;The pulley vertically loaded is fixed on shape of the mouth as one speaks component;In the Model Pile through one with The parallel screw rod of shape of the mouth as one speaks component screw rod, screw rod both ends bypass the vertical of a pair of of shape of the mouth as one speaks component by vertically load wirerope respectively and add The pulley of the pulley of load and a pair of longitudinal channel steel end, is separately connected left and right vertical loading device;In the steel bushing of the Model Pile A horizontal addload wirerope is cased on cylinder, longitudinal channel steel middle part is vertical to place around being fixed on for one end of horizontal addload wirerope Shape of the mouth as one speaks component on horizontal addload pulley connect horizontal loading apparatus;
By screwing the flower basket bolt at the horizontal positioned non-load end of shape of the mouth as one speaks component, the pulley sliding vertically loaded is controlled, Vertical load is applied to the Model Pile;
By screwing the flower basket bolt at the non-load end of shape of the mouth as one speaks component placed vertically, the pulley of controlled level load is slided, Horizontal loading is applied to the Model Pile.
For above-mentioned technical proposal, there are also further preferred schemes by the present invention:
Preferably, the horizontal addload wirerope is equipped with tension-compression sensor.
Preferably, U-shaped steel piece has been bolted in the two sides of longitudinal channel steel, and U-shaped steel piece is adjacent with longitudinal channel steel It is bolted between section and constitutes closing sliding slot, the pulley vertically loaded only slide in the closing sliding slot by generation level.
Preferably, the shape of the mouth as one speaks component is two steel discs by screw rod and the fixed frame structure formed of roller bearing, on roller bearing Equipped with pulley, set axis is equipped on screw rod, middle pulley passes through for wirerope, and set axis is for connecting flower basket bolt.
Preferably, the model pile protection places the survey sedimentation of a transparent glass material in steel bushing above Model Pile Platform.
Preferably, the horizontal addload wirerope of the horizontal loading apparatus connecting pin and vertical loading device connecting pin is perpendicular Wirerope fastener is equipped on load wirerope.
Preferably, the horizontal loading apparatus and vertical loading device by two angle steel as pallet, and strut thereon Place counterweight load.
Preferably, steel bushing drum outer wall two sides are equipped with horizontal addload connector, and horizontal addload steel wire penetrating level adds It is lockked after carrying connector by wirerope fastener.
Preferably, the pulley lower plane of a lip-sync component and plane on the pulley of a pair of longitudinal channel steel end are in same water In plane.
Preferably, the shape of the mouth as one speaks component placed vertically is connected between two longitudinal channel steels by vertical channel steel;It is described The U-shaped closing sliding slot of two screw rods sliding of shape of the mouth as one speaks component is equipped on vertical channel steel and longitudinal channel steel.
The present invention correspondingly gives a kind of Model Pile laboratory test combined load applying method, includes the following steps:
1) a certain amount of soil body is filled in model slot, Model Pile is embedded in model slot, and in Model Pile two sides cloth If longitudinal channel steel, U-shaped steel piece is connect with 2 longitudinal channel steels;
2) it is connected on longitudinal channel steel by connector, and shape of the mouth as one speaks component is connected by connection flower basket bolt, by vertical Load wirerope is separately connected the screw rod at penetration model stake both ends, around the pulley and a pair longitudinal channel steel end vertically loaded Pulley is separately connected left and right vertical loading device;
3) a horizontal addload wirerope is covered on the steel bushing of Model Pile free end, one end bypasses and is fixed on longitudinal slot The pulley connection horizontal loading apparatus for the horizontal addload on shape of the mouth as one speaks component placed vertically in the middle part of steel;
4) pulley vertically loaded is made to exist by screwing the flower basket bolt on the shape of the mouth as one speaks component being horizontally arranged on longitudinal channel steel It is formed in closing sliding slot and is slided with longitudinal channel steel in U-shaped steel piece under active force, so that vertical load be made to keep vertical;Pass through The flower basket bolt screwed on the shape of the mouth as one speaks component placed vertically on vertical channel steel makes the pulley of horizontal addload under active force U-shaped It is slided in closing sliding slot, to keep horizontal loading holding horizontal.
Compared with prior art, the beneficial effects of the present invention are embodied in: break through the limitation of original such experimental rig, in addition to It is outer to control unidirectional load application, the application of vertical load and horizontal loading can also be controlled respectively, be applied to study load Add research of the sequence to pile foundation bearing characters;The device can be with the application height and Control experiment mistake of controlled level load Vertical load applies straight down always in journey, thus preferably bearing characters of the analysis pile foundation under combined load;Meanwhile it is former There is experimental rig to have larger limitation to the position of embedded stake, typically load reaction beam is fixed, and test pile requires to be embedded in counter-force Below beam axis, and the present apparatus can be realized on any mould for being arranged in effective coverage in model slot (not influenced by boundary effect) Type stake carries out loading and unloading;In addition, the present apparatus is to control pulley sliding by flower basket bolt, can one man operation, simple and convenient, And the distance of pulley sliding can accurately be controlled by flower basket bolt, to improve the accuracy of test.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not Inappropriate limitation of the present invention is constituted, in the accompanying drawings:
Fig. 1 is that Model Pile laboratory test combines loading device elevation;
Fig. 2 is that Model Pile laboratory test combines loading device top view;
Fig. 3 is that Model Pile laboratory test combines loading device part B right view;
Fig. 4 is enlarged drawing of the C portion loading device in G-G section;
Fig. 5 is enlarged drawing of the part A loading device in H-H section;
Fig. 6 is the part D shape of the mouth as one speaks component enlarged drawing.
Wherein, 1 is model slot, and 2 be transverse channel steels, and 3 be longitudinal channel steel, and 4 be U-shaped steel piece, and 5-1 is No.1 pulley, and 5-2 is No. two pulleys, 5-3 are No. three pulleys, and 5-4 is No. four pulleys, and 5-5 is No. five pulleys, and 6-1 and 6-2 are left and right vertical load steel Cord, 6-3 are horizontal addload wirerope, and 7-1 is connector, and 7-2 is flower basket bolt, and 7-3 is shape of the mouth as one speaks component, and 8-1 and 8-2 are Left and right vertical loading device, 8-3 are horizontal loading apparatus, and 9 be Model Pile, and 10 be steel bushing, and 11 is survey settlement platform, and 12 are Horizontal addload connector, 13 be vertical channel steel, and 14 be wirerope fastener, and 15 be longitudinal nut sliding slot, and 16 be lateral nut sliding slot, 17 load screw rod to be vertical, and 18 be U-shaped closing sliding slot.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention And explanation is used to explain the present invention, but not as a limitation of the invention.
As shown in Figure 1, 2, 3, a kind of Model Pile laboratory test combined load bringing device, including model slot 1 and bury in advance Be located at the Model Pile 9 in model slot 1 in the soil body, wherein 9 sets of Model Pile in steel bushing 10,9 sets of Model Pile on steel bushing 10 Place the survey settlement platform 11 of a transparent glass material in side.Wherein, 1 both ends of model slot are provided with a pair by transverse channel steels 2 U-shaped steel piece 4 has been bolted in longitudinal channel steel 3, the two sides of longitudinal channel steel 3, and U-shaped steel piece 4 and longitudinal 3 adjacent bolt of channel steel connect It connects and constitutes closing sliding slot between section, the pulley vertically loaded only slide in the closing sliding slot by generation level.In longitudinal channel steel 3 One end (not loading end) aperture, by connector 7-1 pass through aperture vertically connect a flower basket bolt 7-2, flower basket bolt The horizontal positioned shape of the mouth as one speaks component 7-3 of 7-2 connection one;One end of horizontal positioned shape of the mouth as one speaks component 7-3 and the end of flower basket bolt 7-2 The connection of portion's annulus, the other end fix the pulley vertically loaded, are No.1 pulley 5-1 and No. three pulley 5-3 in the present embodiment. Run through a vertical load screw rod 17 parallel with shape of the mouth as one speaks component 7-3 screw rod in the Model Pile 9 in steel bushing 10, it is vertical to load 17 both ends of screw rod bypass a pair of of pulley (No.1 cunning of shape of the mouth as one speaks component 7-3 by left and right vertical load wirerope 6-1 and 6-2 respectively Take turns 5-1 and No. three pulley 5-3) on;One end of left and right vertical load wirerope 6-1 and 6-2 bypass a pair of longitudinal channel steel 3 respectively No. two pulley 5-2 of the end and No. four left and right vertical loading device 8-1 and 8-2 of pulley 5-4 connection.No.1 pulley 5-1, No. three The roller bearing lower plane of pulley 5-3 and No. two pulley 5-2, No. four pulley 5-4 roller bearing on plane in same level.Five cunnings Wheel passes through secondary operation, and each pulley replaces original-pack roller bearing with screw rod.
Shape of the mouth as one speaks component 7-3 is the steel disc for processing two panels suitable length, and in each aperture in steel disc both ends, one end is passed through with cunning The roller bearing of wheel, the other end pass through another screw rod, set axis are equipped on screw rod, to connect flower basket bolt 7-2, whole device shape At a hollow pulley system 7-3.
It is cased with a horizontal addload wirerope 6-3 on the steel bushing 10 of Model Pile 9, is equipped with horizontal add along steel bushing 10 Connector 12 is carried, horizontal addload wirerope 6-3 is lockked after passing through horizontal addload connector 12 by wirerope fastener 14;Water One end of flat load wirerope 6-3 bypasses the pulley of horizontal addload, i.e. No. five pulley 5-5 connection horizontal loading apparatus 8-3.Its In, No. five pulley 5-5 are the pulley for the shape of the mouth as one speaks component 7-3 placed vertically being connected on vertical channel steel 13,13 liang of vertical channel steel End is connected with longitudinal channel steel 3.Tension-compression sensor is equipped between steel bushing 10 and pulley 5-5, so that precise measurement loads load.
By screwing the flower basket bolt 7-2 at the horizontal positioned non-load end shape of the mouth as one speaks component 7-3, the pulley vertically loaded is controlled Sliding applies vertical load to the Model Pile 1;By the gaily decorated basket spiral shell for screwing the non-load end shape of the mouth as one speaks component 7-3 placed vertically Bolt 7-2, the pulley sliding of controlled level load, applies horizontal loading to the Model Pile 1.
In the present apparatus, two longitudinal channel steels 3 are in the inside in the place for stretching out model slot certain distance, one Duan Shuzhi of each welding The vertical channel steel 13 of trumpet, and symmetrically open sliding slot (as shown in Figure 4) in small size 13 middle section inner wall of vertical channel steel, facilitate horizontal add The pulley 5-5 of load is slided up and down in vertical plane, the symmetric borehole on the inside of small size channel steel upper end, passes through connector to pass through screw rod 7-1 fixes flower basket bolt 7-2.
Wherein, several longitudinal nut sliding slots 15 docked with transverse channel steels 2 are equipped on vertical channel steel 3, in transverse groove Steel 2 is equipped with the lateral nut sliding slot 16 docked with longitudinal channel steel 3.Longitudinal channel steel 3 passes through longitudinal nut sliding slot 15 by bolt Fixed with the lateral nut sliding slot 16 in transverse channel steels 2, the screw rod of connection No.1 pulley 5-1 and No. three pulley 5-3 is fixed on slot In the sliding slot of 3 side wall of steel.
Wherein, the horizontal addload wirerope 6-3 of horizontal loading apparatus 8-3 connection is connected with vertical loading device 8-1,8-2 Vertical load wirerope 6-1 and 6-2 on be equipped with wirerope fastener 14.Horizontal loading apparatus 8-3 and left and right vertical load dress 8-1,8-2 are set by two angle steel as pallet, and places counterweight load thereon in strut.
It can be seen from the figure that A is 9 region of Model Pile for being cased with steel bushing 10, B is model slot region, and C is vertically arranged The region shape of the mouth as one speaks component 7-3, D be horizontal direction setting the region shape of the mouth as one speaks component 7-3.
As shown in figure 4, the shape of the mouth as one speaks component 7-3 placed vertically is connected between two longitudinal channel steels 3 by vertical channel steel 13; The U-shaped closing sliding slot 18 of two screw rods sliding of shape of the mouth as one speaks component 7-3 is equipped on vertical channel steel 13 and longitudinal channel steel 3.
As shown in figure 5,10 sets of the steel bushing top in Model Pile 9, horizontal addload connector 12 is welded under steel bushing 10 Wall two sides, horizontal addload connector 12 is two nuts, for then passing through wire line hitch through horizontal addload wirerope 6-3 Tool 14 is lockked.
As shown in fig. 6, shape of the mouth as one speaks component 7-3 is two steel discs by the fixed frame structure formed of two screw rods, in two silks Pulley and set axis are respectively equipped on bar, middle pulley passes through for wirerope, and set axis is for connecting flower basket bolt 7-2.
The longitudinal channel steel 3 of two of 9 two sides upper end of Model Pile processes the U-shaped of appropriate length in the place of sidewall symmetry respectively Slot, U-type groove top is locked on channel steel with the U-shaped steel piece 4 in addition processed, so that the closing sliding slot of appropriate length is formed, it is convenient Pulley 5-1, the 5-3 vertically loaded only slide in sliding slot by generation level.Two longitudinal channel steels 3 are in the end for stretching out model slot 1 (loading end) is each to fix pulley 5-2, a 5-4, convenient vertical load.
The loading end of all loading devices is all made of steel disc and bearing device composition loaded members, places counterweight use to facilitate With load.Bearing device is made of the angle steel of two pieces of same sizes, and angle steel forms T font support platform, then by vertical steel disc Be clipped among two angle steel, whole device formed it is cross, the overlay segment of steel disc and angle steel bore up and down two holes, connected with bolt It connects.It drills at the top of steel disc upper end, to connect the wirerope by pulley, to achieve the purpose that be further applied load.
Loading method can be using other device loads with constant weight such as counterweight.
Left and right vertical loading device 8-1,8-2, left and right vertical load wirerope 6-1,6-2 are symmetrically fixed on by nut On the screw rod of 9 stake top of Model Pile, left and right vertical load wirerope 6-1,6-2 are locked after bypassing screw rod with wirerope fastener 14 Tightly, No.1 pulley 5-1, No. three pulley 5-3 and No. two pulley 5-2, No. four pulley 5-4 are then passed around, loaded members upper end is passed through Preformed hole after with wirerope fastener lock.
The model slot 1 is welded using angle steel and channel steel, and in concreting indoors test site terrace, and four Wall tempered glass enclosing.Model Pile laboratory test combined load bringing device is when in use, sharp by connecting with Model Pile 9 With itself left and right vertical loading device 8-1,8-2 and horizontal loading apparatus 8-3, vertical load, water to Model Pile 9 are realized The load of flat load realizes the measurement to being displaced and deforming in loading procedure by auxiliary displacement meter etc..
In model test, to Model Pile performance test mainly for Mechanics Performance Testing, so the external load master applied If horizontal loading, vertical load and moment of flexure, some other load can be applied by base load and combinations thereof.The present apparatus It can increase on steel bushing 10 because a temporarily design needed for test applies horizontal and vertical base load to apply moment load Add moment load to apply point and in addition welds a pair of No. 13 vertical channel steels on No. three channel steel 5-3.
When test, first the soil body prepared will be filled up according to test requirements document in model slot 1, model slot 1 using angle steel and Tempered glass composition, and bottom slab concreting fills 7 layer soil bodies in the model slot 1 of the present embodiment, this experimental rig can on terrace altogether To carry out pre-buried, static pressure test to prefabricated pile, pore-forming is carried out to bored concrete pile and pours pile, the scope of application is than wide.
The present invention now provides indoor model stake test method, includes the following steps:
A certain amount of soil body is filled in model slot 1, soil layer can be needed into placement in layers by test and is hit with compaction test apparatus It is real, until reaching predetermined elevation location;Model Pile 9 is embedded in model slot 1, model slot 9 is stood into a period of time, makes model Soil body moisture in slot 1 is evenly distributed.And longitudinal channel steel 3 is laid in 9 two sides of Model Pile, longitudinal channel steel 3 passes through with transverse channel steels 2 Link slot 15 and 16 on channel steel is connected with;No. two pulley 5-2 and No. four pulley 5-4 are laid in longitudinal channel steel pre-determined bit It sets, and No.1 pulley 5-1 and No. three pulley 5-3 is placed on longitudinal channel steel predetermined position, then lay phase on longitudinal channel steel 3 It is bolted between the same longitudinal channel steels 3 of 4 U-shaped steel pieces, 4,4 U-shaped steel pieces 4 and 2, as shown in Figure 2.
Flower basket bolt 7-2 is fixed on behind longitudinal 3 predetermined position of channel steel and corresponding No.1 pulley 5-1 and No. three pulley 5- 3 are connected firmly by shape of the mouth as one speaks component 7-3;Similarly the flower basket bolt 7-2 for being used for horizontal addload and No. five pulley 5-5 are being pre-positioned It sets and is connected firmly;The vertical load wirerope 6-1 in a left side of certain length is chosen, one end and left vertical loading device 8-1 pass through steel wire 14 connection of sling tool, the other end bypass the upper end of No. two pulley 5-2 and the lower end of No.1 pulley 5-1 and the silk for passing through Model Pile 9 Bar connection;The vertical load one end wirerope 6-2 in the right side and right vertical loading device 8-2 for similarly choosing equal length pass through wirerope Fastener 14 connects, and the other end bypasses the upper end of No. four pulley 5-4 and the lower end of No. three pulley 5-3 and the screw rod for passing through Model Pile 9 In addition connection takes horizontal addload one end wirerope 6-3 of certain length and horizontal loading apparatus 8-3 to connect by wirerope fastener 14 It connects, the other end connect around the upper end of No. five pulley 5-5 with tension-compression sensor;Certain length horizontal addload wirerope 6-3 is taken outside It connect after being locked around the horizontal addload connector 12 on steel loading sleeve 10 and with wirerope fastener 14 with tension-compression sensor, such as schemes Shown in 2 Fig. 3.
The one end flower basket bolt 7-2 is fixed on longitudinal channel steel 3, and the adjustable other end of the knob by turning itself is therewith The No.1 pulley 5-1 of connection and No. three pulley 15-3 are arbitrarily slided in the sliding slot that longitudinal channel steel 3 is formed with U-shaped steel piece 4, thus Reach pulley accurate positionin, while guaranteeing to keep vertical to the vertical load that Model Pile 9 applies during the test.Such as Fig. 1 and Shown in Fig. 2.
During test, under horizontal loads, test pile can be subjected to displacement, by screwing the gaily decorated basket on longitudinal channel steel 3 The U-shaped steel piece and longitudinal channel steel that bolt 7-2 keeps No.1 pulley 5-1, No. three pulley 5-3 shown in Fig. 1 under active force are formed and are sealed It closes in sliding slot and sliding occurs to make vertical load keep vertical;Similarly, the flower basket bolt 7-2 screwed on vertical channel steel 13 makes five Sliding occurs in number U-shaped closing sliding slot 18 pulley 5-5 shown in Fig. 3 under active force to keep horizontal loading holding horizontal.
When left vertical loading device 8-1 and right vertical loading device 8-2 is by vertically loading screw rod on pulley and Model Pile When 17 connection, which applies vertical load to Model Pile.
When horizontal loading apparatus 8-3 by pulley with horizontal addload attachment device 12 is connect in Model Pile when, the load fill It sets and horizontal loading is applied to Model Pile.
The present apparatus can add laser displacement monitoring device, to accurately be monitored to pile body shifting, and then to stake soil phase Interaction rule is analyzed.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor A little replacements and deformation, these replacements and deformation are within the scope of the invention.

Claims (10)

1. a kind of Model Pile laboratory test combined load bringing device, which is characterized in that exist including model slot (1) and pre-plugged Model Pile (9) in model slot (1) interior soil body is provided with a pair of longitudinal channel steel (3) on the model slot (1), in the longitudinal direction A horizontal positioned shape of the mouth as one speaks component (7-3) is connected by flower basket bolt (7-2) on channel steel (3);It is fixed on shape of the mouth as one speaks component (7-3) One pulley vertically loaded;Run through a vertical load spiral shell parallel with shape of the mouth as one speaks component (7-3) screw rod on the Model Pile (9) Bar (17) vertically loads screw rod (17) both ends by vertically load wirerope and bypasses the vertical of a pair of of shape of the mouth as one speaks component (7-3) respectively The pulley of the pulley of load and a pair of longitudinal channel steel (3) end, is separately connected left and right vertical loading device;In the Model Pile (9) a horizontal addload wirerope (6-3) is cased on steel bushing (10), one end of horizontal addload wirerope (6-3) is around solid It is scheduled on the pulley connection horizontal loading apparatus of the horizontal addload on the shape of the mouth as one speaks component (7-3) placed vertically in the middle part of longitudinal channel steel (3) (8-3);
By screwing the flower basket bolt (7-2) at horizontal positioned non-load end shape of the mouth as one speaks component (7-3), the pulley vertically loaded is controlled Sliding applies vertical load to the Model Pile (9);
By screwing the flower basket bolt (7-2) at the non-load end shape of the mouth as one speaks component (7-3) placed vertically, the pulley of controlled level load Sliding applies horizontal loading to the Model Pile (9).
2. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that the water Flat load wirerope (6-3) is equipped with tension-compression sensor.
3. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that described vertical It has been bolted U-shaped steel piece (4) to the two sides of channel steel (3), U-shaped steel piece (4) and longitudinal channel steel (3) adjacent bolt linkage section Between constitute closing sliding slot, the pulley vertically loaded only in the closing sliding slot generation level sliding.
4. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that the mouth Type component (7-3) is two steel discs by screw rod and the fixed frame structure formed of roller bearing, pulley is equipped on roller bearing, on screw rod Equipped with set axis, middle pulley passes through for wirerope, and set axis is for connecting flower basket bolt (7-2).
5. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that the mould Type stake (9) covers in steel bushing (10), and the survey settlement platform (11) of a transparent glass material is placed above Model Pile (9).
6. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that the water The horizontal addload wirerope (6-3) and vertical loading device (8-1) of flat loading device (8-3) connecting pin, the connecting pin (8-2) it is perpendicular Wirerope fastener (14) are equipped in load wirerope (6-1) and (6-2);
The horizontal loading apparatus (8-3) and vertical loading device (8-1), (8-2) by two angle steel as pallet, and in strut Upper placement counterweight load.
7. a kind of Model Pile laboratory test combined load bringing device according to claim 1 or 6, which is characterized in that institute Steel bushing (10) outer wall two sides are stated equipped with horizontal addload connector (12), horizontal addload wirerope (6-3) passes through the level and adds Connector (12) are carried to be lockked by wirerope fastener (14) afterwards.
8. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that a counterpart Plane is in same level on the pulley lower plane of type component (7-3) and the pulley of a pair of longitudinal channel steel (3) end.
9. a kind of Model Pile laboratory test combined load bringing device according to claim 1, which is characterized in that described perpendicular The shape of the mouth as one speaks component (7-3) directly placed is connected between two longitudinal channel steels (3) by vertical channel steel (13);The vertical channel steel (13) and on longitudinal channel steel (3) it is equipped with the U-shaped closing sliding slot of two screw rods sliding convenient for shape of the mouth as one speaks component (7-3).
10. a kind of Model Pile laboratory test combined load applying method, which comprises the steps of:
1) a certain amount of soil body is filled in model slot (1), Model Pile (9) is embedded in model slot (1), and in Model Pile (9) longitudinal channel steel (3) is laid in two sides, and U-shaped steel piece (4) is connect with 2 longitudinal channel steels (3);
2) it is connected on longitudinal channel steel (3) by connector (7-1), and shape of the mouth as one speaks component is connected by connection flower basket bolt (7-2) (7-3), the screw rod (17) for being separately connected penetration model stake (9) both ends by vertically loading wirerope, around the cunning vertically loaded The pulley of wheel and a pair of longitudinal channel steel (3) end, is separately connected left and right vertical loading device;
3) a horizontal addload wirerope (6-3) is covered on the steel bushing (10) of Model Pile (9) free end, one end is around fixation The pulley for the horizontal addload on shape of the mouth as one speaks component (7-3) placed vertically in the middle part of longitudinal channel steel (3) connects horizontal loading apparatus (8- 3);
4) by screwing the flower basket bolt (7-2) on the shape of the mouth as one speaks component (7-3) being horizontally arranged on longitudinal channel steel (3), make vertically to add The pulley of load is formed in closing sliding slot with longitudinal channel steel (3) in U-shaped steel piece (4) under active force and is slided, to make vertical Load keeps vertical;By screwing the flower basket bolt (7- on the shape of the mouth as one speaks component (7-3) placed vertically on vertical channel steel (13) 2) slide the pulley (5-5) of horizontal addload in U-shaped closing sliding slot under active force, so that horizontal loading be made to keep It is horizontal.
CN201811581722.5A 2018-12-24 2018-12-24 A kind of Model Pile laboratory test combined load bringing device and method Pending CN109440843A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042222A (en) * 2019-12-18 2020-04-21 广东工业大学 Test device for simulating influence of shield secondary grouting process on horizontal loaded pile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042222A (en) * 2019-12-18 2020-04-21 广东工业大学 Test device for simulating influence of shield secondary grouting process on horizontal loaded pile
CN111042222B (en) * 2019-12-18 2022-01-28 广东工业大学 Test device for simulating influence of shield secondary grouting process on horizontal loaded pile

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