CN204255832U - Crab-bolt pullout tests charger - Google Patents

Crab-bolt pullout tests charger Download PDF

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Publication number
CN204255832U
CN204255832U CN201420824043.7U CN201420824043U CN204255832U CN 204255832 U CN204255832 U CN 204255832U CN 201420824043 U CN201420824043 U CN 201420824043U CN 204255832 U CN204255832 U CN 204255832U
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CN
China
Prior art keywords
crab
bolt
long
angled intersection
charger
Prior art date
Application number
CN201420824043.7U
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Chinese (zh)
Inventor
赵宁雨
吴志伟
唐冉松
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重庆交通大学
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Priority to CN201420824043.7U priority Critical patent/CN204255832U/en
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Publication of CN204255832U publication Critical patent/CN204255832U/en

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Abstract

The utility model discloses a kind of crab-bolt pullout tests charger, the charger comprising right-angled intersection girder and be supported between crab-bolt concrete foundation and right-angled intersection girder, crab-bolt outer end is connected to the center of right-angled intersection girder, the utility model is for the reasonable combination of existing Normal hydraulic lifting jack, by some simple sub-frames, design a kind of crab-bolt pullout tests charger, can be used for the extraction-resistant behavior of the anchor pile of test diameter d>40mm, this device can realize drawing being loaded the pattern being converted into pressurized and loading, the hydraulic jack of four little tonnages is adopted to provide large-tonnage to make a concerted effort, and certain unsettled distance can be retained, for measuring concrete foundation failure mode, this apparatus structure is simple, safe and reliable, stability is good, cost is lower and can repeatedly reuse, can ensure that pullout tests charger provides validity and the stability of pulling force, meet the measurement requirement to concrete foundation failure mode and displacement in test, have a extensive future.

Description

Crab-bolt pullout tests charger
Technical field
The utility model relates to a kind of test unit, particularly relates to a kind of crab-bolt pullout tests charger.
Background technology
In major diameter foundation anchor bolt pullout tests, the anchor force between crab-bolt and reinforced concrete foundation may reach seven or eight hundred tons, even goes up kiloton, can not reach the pressure requirements of test for common hydraulic jack far away.Although there are some large-tonnage hydraulic jack on the market, some lifting jack even can reach the pressure of kiloton.But separate unit hydraulic jack can not carry out drawing to stake simply, must be realized by the sub-frame of some more complicated.And large-tonnage hydraulic jack price is high, performance is also unstable, and itself is also heavier, this significantly increases difficulty and the cost of test.In pullout tests, need the displacement and the deformation pattern that record concrete foundation, punching lifting jack therefore can not be adopted directly to carry out drawing to stake.Must carry out drawing by the mode arranging reaction frame, reaction frame should keep certain built on stilts distance.
Utility model content
In view of this, problem to be solved in the utility model is, for the reasonable combination of existing Normal hydraulic lifting jack, and by some simple sub-frames, design a kind of crab-bolt pullout tests charger, its make is simple, cost is lower, sound construction, can ensure that pullout tests charger provides validity and the stability of pulling force, and its counter-force framework can retain certain unsettled distance, can meet the measurement requirement to concrete foundation failure mode and displacement in test.
Crab-bolt pullout tests charger of the present utility model, the charger comprising right-angled intersection girder and be supported between crab-bolt concrete foundation and right-angled intersection girder; Crab-bolt outer end is connected to the center of right-angled intersection girder;
Further, the measurement instrument measuring concrete foundation surface displacement and crab-bolt axial displacement is also comprised;
Further, described measurement instrument is fixed on floor tile masonry structure by steel pipe;
Further, described right-angled intersection girder comprises long beam, is horizontally distributed in long beam both lateral sides and is vertically fixed on two reinforcement steel plates that two short beams in the middle part of long beam and the upper and lower both sides of corresponding long beam and short beam junction are fixedly installed;
Further, described right-angled intersection girder also comprises the angle steel being fixed on angle between short beam and long beam;
Further, described long beam and short beam all adopt H profile steel to make; Web one end of short beam to be stretched out in the groove for inserting on long beam between lower wing plate and is welded and fixed with the web of long beam; Described reinforcement steel plate is fixed on upper flange and the lower wing plate of long beam and short beam accordingly; Described angle steel is fixed on the web of long beam and short beam;
Further, all stiffening rib is fixed with between the upper lower wing plate of described long beam and short beam and web; The web both sides of long beam and short beam be equipped with stiffening rib and stiffening rib along corresponding long beam and short beam length multiple to being evenly arranged;
Further, described crab-bolt outer end through right-angled intersection girder center and nut be set in crab-bolt end make anchor bolts in the center of right-angled intersection girder, between nut and right-angled intersection girder, be provided with backing plate;
Further, described charger is hydraulic jack, described hydraulic jack one_to_one corresponding is arranged at four ends of right-angled intersection girder, is provided with top board, is provided with base plate between hydraulic jack and crab-bolt concrete foundation between hydraulic jack and right-angled intersection girder.
The beneficial effects of the utility model are: the utility model is for the reasonable combination of existing Normal hydraulic lifting jack, by some simple sub-frames, design a kind of crab-bolt pullout tests charger, can be used for the extraction-resistant behavior of the anchor pile of test diameter d>40mm, this device can realize drawing being loaded the pattern being converted into pressurized and loading, the hydraulic jack of four little tonnages is adopted to provide large-tonnage to make a concerted effort, and certain unsettled distance can be retained, for measuring concrete foundation failure mode, this apparatus structure is simple, safe and reliable, stability is good, cost is lower and can repeatedly reuse, can ensure that pullout tests charger provides validity and the stability of pulling force, meet the measurement requirement to concrete foundation failure mode and displacement in test, have a extensive future.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of right-angled intersection girder;
Fig. 3 is the vertical view of right-angled intersection girder;
Fig. 4 is short beam structural representation;
Fig. 5 is steel angle structure schematic diagram.
Embodiment
Fig. 1 is structural representation of the present utility model, Fig. 2 is the structural representation of right-angled intersection girder, Fig. 3 is the vertical view of right-angled intersection girder, Fig. 4 is short beam structural representation, Fig. 5 is steel angle structure schematic diagram, as shown in the figure: the crab-bolt pullout tests charger of the present embodiment, comprises right-angled intersection girder 1 and is supported in the charger 3 between crab-bolt 4 concrete foundation 2 and right-angled intersection girder 1, crab-bolt 4 outer end is connected to the center of right-angled intersection girder 1, adopt hydraulic jack as charger 3, using right-angled intersection girder 1 as counter-force framework, for the reasonable combination of existing Normal hydraulic lifting jack, charger 3 is arranged in four ends of right-angled intersection girder 1, the general pressure of four hydraulic jack is greater than the withdrawal resistance of crab-bolt 4, and the built on stilts distance between crab-bolt 4 and hydraulic jack is at least left 3h ef(h efeffective anchorage depth for anchor pile), ensure that hydraulic jack can not cause larger impact to concrete foundation 2 deformation failure, charger 3 and crab-bolt 4 should meet the requirement of the pullout tests concentricity that specification specifies, concrete foundation 2 surface and right-angled intersection girder 1 plane are set to level, at the trial, the counterforce device of pullout tests adopts an electric oil pump simultaneously to the mode of four hydraulic jack fuel feeding, every grade of load applies by estimate load 10%, be divided into 10 grades, every grade of load 2min stabilization time, maintain the stability of the apparatus and continuation, right-angled intersection girder 1 plane should remain horizontality, can be used for the extraction-resistant behavior of the anchor pile of test diameter d>40mm, crab-bolt 4 pullout tests charger 3 can realize drawing being loaded the pattern being converted into pressurized and loading, the hydraulic jack of four little tonnages is adopted to provide large-tonnage to make a concerted effort, and certain unsettled distance can be retained, for measuring concrete foundation 2 failure mode, this apparatus structure is simple, safe and reliable, stability is good, cost is lower and can repeatedly reuse, can ensure that pullout tests charger 3 provides validity and the stability of pulling force, meet the measurement requirement to concrete foundation 2 failure mode and displacement in test, have a extensive future.
In the present embodiment, also comprise the measurement instrument 5 measuring concrete foundation 2 surface displacement and crab-bolt 4 axial displacement, measurement instrument 5 is at least two, the measuring head immediate roof of a measurement instrument 5 on concrete foundation 2 surface for measuring concrete foundation 2 surface displacement; In crab-bolt 4, another measurement instrument 5 corresponding is fixed with radially-protruding measurement plate, and the measuring head of corresponding measurement instrument 5 axially withstands on along crab-bolt 4 to be measured for measuring crab-bolt 4 axial displacement on plate, uses dial gauge as measurement instrument 5.
In the present embodiment, described measurement instrument 5 is fixed on floor tile masonry structure 7 by steel pipe 6, and brick masonry structure 7 is arranged away from concrete foundation 2, ensures the stability of brick masonry structure 7 relative to ground, avoid the impact by concrete foundation 2 displacement in crab-bolt 4 drawing process, improve measurement accuracy.
In the present embodiment, described right-angled intersection girder 1 comprises long beam 8, be horizontally distributed in long beam 8 both lateral sides and two reinforcement steel plates 10 being fixedly installed with upper and lower both sides, short beam 9 junction of two short beams 9 be vertically fixed in the middle part of long beam 8 and corresponding long beam 8, and make is simple, cost is lower, sound construction, can ensure that pullout tests charger 3 provides validity and the stability of pulling force.
In the present embodiment, described right-angled intersection girder 1 also comprises the angle steel 11 being fixed on angle between short beam 9 and long beam 8, improve the syndeton stability between long beam 8 and short beam 9, and then ensure right-angled intersection girder 1 one-piece construction rigidity, safe and reliable, stability good, cost is lower.
In the present embodiment, described long beam 8 and short beam 9 all adopt H profile steel to make; Web one end of short beam 9 to be stretched out in the groove for inserting on long beam 8 between lower wing plate and is welded and fixed with the web of long beam 8; Described reinforcement steel plate 10 is fixed on upper flange and the lower wing plate of long beam 8 and short beam 9 accordingly; Described angle steel 11 is fixed on the web of long beam 8 and short beam 9, it is a little strong that H profile steel all has bending resistance in all directions, and adopt H profile steel make long beam 8 and short beam 9 construct simple, cost-saving, lightweight construction, mechanical property are good, long beam 8 is consistent with the H profile steel specification that short beam 9 adopts, therefore the external part 12 of short beam 9 web can just insert in the groove on long beam 8 between lower wing plate, is convenient to being fixedly connected with between long beam 8 and short beam 9; Top reinforcement steel plate 10 is fixedly welded on the upper flange of long beam 8 and short beam 9, and bottom reinforcement steel plate 10 is fixedly welded on the lower wing plate of long beam 8 and short beam 9, and angle steel 11 is fixed on the web of long beam 8 and short beam 9 by bolt and nut.
In the present embodiment, between the upper lower wing plate of described long beam 8 and short beam 9 and web, be all fixed with stiffening rib 13; The web both sides of long beam 8 and short beam 9 are equipped with stiffening rib 13 and stiffening rib 13 is grown multiple to being evenly arranged along corresponding long beam 8 and short beam 9, improve the structural strength of long beam 8 and short beam 9, and then ensure right-angled intersection girder 1 one-piece construction rigidity, safe and reliable, stability good, cost is lower.
In the present embodiment, described crab-bolt 4 outer end through right-angled intersection girder 1 center and nut 14 be set in crab-bolt 4 end make crab-bolt 4 be connected to the center of right-angled intersection girder 1, between nut 14 and right-angled intersection girder 1, be provided with backing plate 15, reduce stress, prevent nut 14 pairs of H profile steel from damaging; Crab-bolt 4 is interted and mistake from right-angled intersection girder 1 point of crossing, right-angled intersection girder 1 center-hole diameter 10mm larger than most crab-bolt 4 diameter; Crab-bolt 4 and right-angled intersection girder 1 center pit verticality meet pullout tests code requirement.
In the present embodiment, described charger 3 is hydraulic jack, described hydraulic jack one_to_one corresponding is arranged at four ends of right-angled intersection girder 1, top board 16 is provided with between hydraulic jack and right-angled intersection girder 1, base plate 17 is provided with between hydraulic jack and crab-bolt 4 concrete foundation 2, reduce stress, prevent hydraulic jack from damaging H profile steel and concrete foundation 2.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (9)

1. a crab-bolt pullout tests charger, is characterized in that: the charger comprising right-angled intersection girder and be supported between crab-bolt concrete foundation and right-angled intersection girder; Crab-bolt outer end is connected to the center of right-angled intersection girder.
2. crab-bolt pullout tests charger according to claim 1, is characterized in that: also comprise the measurement instrument measuring concrete foundation surface displacement and crab-bolt axial displacement.
3. crab-bolt pullout tests charger according to claim 2, is characterized in that: described measurement instrument is fixed on floor tile masonry structure by steel pipe.
4. crab-bolt pullout tests charger according to claim 1, is characterized in that: described right-angled intersection girder comprises long beam, be horizontally distributed in long beam both lateral sides and two reinforcement steel plates being fixedly installed of two short beams be vertically fixed in the middle part of long beam and the upper and lower both sides of corresponding long beam and short beam junction.
5. crab-bolt pullout tests charger according to claim 4, is characterized in that: described right-angled intersection girder also comprises the angle steel being fixed on angle between short beam and long beam.
6. crab-bolt pullout tests charger according to claim 5, is characterized in that: described long beam and short beam all adopt H profile steel to make; Web one end of short beam to be stretched out in the groove for inserting on long beam between lower wing plate and is welded and fixed with the web of long beam; Described reinforcement steel plate is fixed on upper flange and the lower wing plate of long beam and short beam accordingly; Described angle steel is fixed on the web of long beam and short beam.
7. crab-bolt pullout tests charger according to claim 6, is characterized in that: be all fixed with stiffening rib between the upper lower wing plate of described long beam and short beam and web; The web both sides of long beam and short beam be equipped with stiffening rib and stiffening rib along corresponding long beam and short beam length multiple to being evenly arranged.
8. the crab-bolt pullout tests charger according to the arbitrary claim of claim 1-7, it is characterized in that: described crab-bolt outer end through right-angled intersection girder center and nut be set in crab-bolt end make anchor bolts in the center of right-angled intersection girder, between nut and right-angled intersection girder, be provided with backing plate.
9. the crab-bolt pullout tests charger according to the arbitrary claim of claim 1-7, it is characterized in that: described charger is hydraulic jack, described hydraulic jack one_to_one corresponding is arranged at four ends of right-angled intersection girder, be provided with top board between hydraulic jack and right-angled intersection girder, between hydraulic jack and crab-bolt concrete foundation, be provided with base plate.
CN201420824043.7U 2014-12-23 2014-12-23 Crab-bolt pullout tests charger CN204255832U (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792622A (en) * 2015-05-18 2015-07-22 郑卫华 Bolt and cable pull-out strength tester
CN105784465A (en) * 2016-03-30 2016-07-20 广西众诚工程质量检测有限公司 Square supporting device for pull-out test
CN106092753A (en) * 2016-08-08 2016-11-09 郑卫华 flat anchor rod drawing instrument
CN106802255A (en) * 2016-12-09 2017-06-06 安徽省建筑工程质量监督检测站 A kind of crab-bolt shearing resistance loading equipemtn
CN110387910A (en) * 2019-07-20 2019-10-29 深圳市实瑞建筑技术有限公司 A method of for architectural engineering foundation anchor resistance to plucking static test
CN110700332A (en) * 2019-09-29 2020-01-17 广东省建筑科学研究院集团股份有限公司 Existing building reinforcing pile foundation static load test counterforce device and test method thereof
CN110823706A (en) * 2019-11-08 2020-02-21 东南大学 Device and method for detecting vertical connection quality of upper and lower prefabricated parts

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792622A (en) * 2015-05-18 2015-07-22 郑卫华 Bolt and cable pull-out strength tester
CN105784465A (en) * 2016-03-30 2016-07-20 广西众诚工程质量检测有限公司 Square supporting device for pull-out test
CN106092753A (en) * 2016-08-08 2016-11-09 郑卫华 flat anchor rod drawing instrument
CN106802255A (en) * 2016-12-09 2017-06-06 安徽省建筑工程质量监督检测站 A kind of crab-bolt shearing resistance loading equipemtn
CN110387910A (en) * 2019-07-20 2019-10-29 深圳市实瑞建筑技术有限公司 A method of for architectural engineering foundation anchor resistance to plucking static test
CN110387910B (en) * 2019-07-20 2020-11-27 深圳市实瑞建筑技术有限公司 Method for uplift static load test of foundation anchor rod of constructional engineering
CN110700332A (en) * 2019-09-29 2020-01-17 广东省建筑科学研究院集团股份有限公司 Existing building reinforcing pile foundation static load test counterforce device and test method thereof
CN110823706A (en) * 2019-11-08 2020-02-21 东南大学 Device and method for detecting vertical connection quality of upper and lower prefabricated parts

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Granted publication date: 20150408

Termination date: 20151223