CN110018045B - Counterforce device for pier stud pseudo-static test - Google Patents

Counterforce device for pier stud pseudo-static test Download PDF

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Publication number
CN110018045B
CN110018045B CN201910156134.5A CN201910156134A CN110018045B CN 110018045 B CN110018045 B CN 110018045B CN 201910156134 A CN201910156134 A CN 201910156134A CN 110018045 B CN110018045 B CN 110018045B
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China
Prior art keywords
jack
test
pier
preformed hole
concrete bearing
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CN201910156134.5A
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CN110018045A (en
Inventor
吴建民
胡可
吴平平
曹光伦
陈修和
邓陈记
郑建中
杨大海
陈玉宏
石雪飞
朱荣
汪志甜
贺桂山
王金兵
王博
吴义华
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Anhui Transport Consulting and Design Institute Co Ltd
Anhui Transportation Holding Group Co Ltd
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Anhui Transport Consulting and Design Institute Co Ltd
Anhui Transportation Holding Group Co Ltd
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Priority to CN201910156134.5A priority Critical patent/CN110018045B/en
Publication of CN110018045A publication Critical patent/CN110018045A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

The invention discloses a counterforce device for a pier stud pseudo-static test, which comprises: the concrete bearing platforms are provided with two groups, the concrete bearing platforms are connected into a whole through concrete connecting beams, and the two groups of concrete bearing platforms are respectively cast with test pier columns; the device comprises a V-shaped support frame anchored on the upper surface of the concrete bearing platform and a testing device, wherein the testing device comprises a tensioning through jack and a pushing jack, the tensioning through jack is fixedly arranged on the right side wall of the connecting steel box, and the pushing jack is fixedly arranged on the left side wall of the connecting steel box.

Description

Counterforce device for pier stud pseudo-static test
Technical Field
The invention relates to the field of civil engineering construction, in particular to a counterforce device for a pier stud pseudo-static test.
Background
At present, the destruction of the pier column structure of the lower part of the domestic bridge in the earthquake is increased day by day. For the conditions of stress deformation and the like of a pier in the earthquake process, more and more attention is paid to analysis and research through a pseudo-static test, and reference is provided for earthquake-resistant design. The loading needs to adopt large-scale counterforce device, generally adopts cast in situ concrete's counterforce device, but this kind of cast in situ concrete's counterforce device, and economic nature is relatively poor at first, and on the other hand, just can pour next experimental pier stud after a experimental pier stud destroys, and the efficiency of loading is not high to lead to the extension of a project, raise the cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a counterforce device for a pier stud pseudo-static test, which is convenient to assemble, can be repeatedly used, can realize continuous tests and saves the test time.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a counterforce apparatus for a pier stud pseudo-static test, comprising:
the concrete bearing platforms are provided with two groups, the concrete bearing platforms are connected into a whole through concrete connecting beams, and the two groups of concrete bearing platforms are respectively cast with test pier columns;
the V-shaped strut is anchored on the upper surface of the concrete bearing platform and comprises a conical structure consisting of four connecting rods and a connecting steel box, the top ends of the four connecting rods are connected into a whole through the connecting steel box, and the lower ends of the four connecting rods are respectively anchored on the concrete bearing platform at a certain angle;
the test device, the test device includes stretch-draw cross-core jack and top pushing jack, stretch-draw cross-core jack is fixed to be set up connect the right side wall of steel case, top pushing jack is fixed to be set up connect the left side wall of steel case.
Further, experimental pier stud is in including setting up cylinder, the setting of concrete cushion cap upper surface are in the pier on cylinder top, and the edgewise of pier vertically is provided with first preformed hole, the top of first preformed hole is provided with anchor straight-through jack, be provided with vertical lacing wire in the first preformed hole, the vertical downwardly extending of lower extreme of vertical lacing wire, and vertical lacing wire anchor is in on the concrete cushion cap, the upper end of vertical lacing wire with anchor straight-through jack fixed connection.
Further, the middle part of pier transversely is provided with the second preformed hole, be provided with the pull rod in the second preformed hole, the one end of pull rod is passed the second preformed hole anchor and is in on the left side wall of pier, the other end of pull rod passes the preformed hole of connecting the steel case with stretch-draw punch jack fixed connection.
Furthermore, a support rod is arranged between the abutment and the pushing jack.
The working steps of the device are as follows:
s1: starting the anchoring penetrating jack, and tensioning the vertical lacing wire by adopting the anchoring penetrating jack to finish the test preparation work;
s2: starting the tensioning penetrating jack, and stretching the pull rod by the tensioning penetrating jack to realize the simulation of the tension effect of the test pier stud;
s3: and starting the pushing jack to push the support rod, so as to realize the simulation of the thrust effect of the test pier stud.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention solves the requirement of simple structure and easy assembly of the device;
(2) according to the device, the test pier columns can be arranged on two sides of the device at the same time, the pouring or assembling operation of the pier column on one side can be carried out by fully utilizing the test time of the pier column on the other side, and the total test time is greatly saved.
The V-shaped support frame is composed of four connecting rods, the four connecting rods are respectively anchored on the concrete bearing platform and form a conical structure in a surrounding mode, the V-shaped support frame is convenient to assemble and carry and has a very stable structure, when the pull-through jack and the push jack work, no shaking is generated, the accuracy of test data can be improved, and in addition, the connecting steel box is arranged, so that a test device is convenient to install and a subsequent pier can be tested continuously.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partial schematic view of a test bridge pier according to the present invention;
FIG. 3 is a top view of the present invention;
wherein: 1-V-shaped strut, 2-connecting steel box, 3-tensioning penetrating jack, 4-pushing jack, 5-anchoring penetrating jack, 6-pull rod, 61-second preformed hole, 7-vertical tie bar, 71-first preformed hole, 8-support rod, 9-test pier stud and 91-column body; 92-abutment; 10-concrete bearing platform and 11-concrete connecting beam.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Examples
As shown in fig. 1 to 3, the invention relates to a counterforce device for a pier stud pseudo-static test, comprising:
the concrete bearing platforms 10 are provided with two groups of concrete bearing platforms 10, the concrete bearing platforms 10 are connected into a whole through concrete connecting beams 11, and the two groups of concrete bearing platforms 10 are respectively cast with test pier studs 9;
the V-shaped strut is anchored on the upper surface of the concrete bearing platform 10 and comprises a conical structure consisting of four connecting rods 1 and a connecting steel box 2, the top ends of the four connecting rods 1 are connected into a whole through the connecting steel box 2, and the lower ends of the four connecting rods 1 are respectively anchored on the concrete bearing platform 10 at a certain angle;
the testing device comprises a tensioning through jack 3 and a pushing jack 4, wherein the tensioning through jack 4 is fixedly arranged on the right side wall of the connecting steel box 2, and the pushing jack 4 is fixedly arranged on the left side wall of the connecting steel box 2.
Experimental pier stud 9 is including setting up the cylinder 91 at concrete cushion cap 10 upper surface, the pier 92 of setting on cylinder 91 top, and the edgewise of pier 92 vertically is provided with first preformed hole 71, the top of first preformed hole 71 is provided with anchor straight-through jack 5, be provided with vertical lacing wire 7 in the first preformed hole 71, the vertical downwardly extending of lower extreme of vertical lacing wire 7, and the anchor of vertical lacing wire 7 is on concrete cushion cap 10, the upper end and the anchor straight-through jack 5 fixed connection of vertical lacing wire 7.
The middle part of pier 92 transversely is provided with second preformed hole 61, is provided with pull rod 6 in the second preformed hole 61, and the one end of pull rod 6 passes second preformed hole 61 anchor on the left side wall of pier 92, and the other end of pull rod 6 passes the preformed hole way of connecting steel case 2 and stretch-draw feed-through jack 3 fixed connection.
A support rod 8 is arranged between the abutment 92 and the pushing jack 4.
The test steps are as follows:
s1: and starting the anchoring penetrating jack 5, and tensioning the vertical lacing wire 7 by adopting the anchoring penetrating jack 5 to finish the test preparation work.
S2: and starting the tensioning penetrating jack 3, and stretching the pull rod 6 by the tensioning penetrating jack 3 to realize the simulation of the tension effect of the test pier stud 9.
S3: and starting the pushing jack 4, and pushing the support rod 8 by the pushing jack 4 to realize the simulation of the pushed effect of the test pier stud 9.
When the device is used for testing one test pier, the other test pier is cast or assembled on one side of the V-shaped support frame, and after the first test pier is tested, the positions of the pushing jack and the tensioning penetrating jack are exchanged, so that the second test pier is tested.
The V-shaped support frame is composed of four connecting rods 1, the four connecting rods 1 are respectively anchored on a concrete bearing platform 10 and form a conical structure in a surrounding mode, the V-shaped support frame is convenient to assemble and carry and has a very stable structure, when the tensioning through jack 3 and the pushing jack 4 work, no shaking is generated, and the accuracy of test data can be improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. A counterforce device for pier stud pseudo-static force test is characterized by comprising:
the concrete bearing platforms (10) are arranged in two groups, the concrete bearing platforms (10) are connected into a whole through concrete connecting beams (11), and the two groups of concrete bearing platforms (10) are respectively poured with test pier columns (9);
the V-shaped strut is anchored on the upper surface of the concrete bearing platform (10), and comprises a conical structure formed by four connecting rods (1) and a connecting steel box (2), the top ends of the four connecting rods (1) are connected into a whole through the connecting steel box (2), and the lower ends of the four connecting rods (1) are respectively anchored on the concrete bearing platform (10) at a certain angle;
the test device comprises a tensioning feed-through jack (3) and a pushing jack (4), wherein the tensioning feed-through jack (3) is fixedly arranged on the right side wall of the connecting steel box (2), and the pushing jack (4) is fixedly arranged on the left side wall of the connecting steel box (2);
the test pier stud (9) comprises a cylinder (91) arranged on the upper surface of the concrete bearing platform (10) and a pier (92) arranged at the top end of the cylinder (91), a first preformed hole (71) is longitudinally formed in the edge of the pier (92), an anchoring through jack (5) is arranged above the first preformed hole (71), a vertical tie bar (7) is arranged in the first preformed hole (71), the lower end of the vertical tie bar (7) vertically extends downwards, the vertical tie bar (7) is anchored on the concrete bearing platform (10), and the upper end of the vertical tie bar (7) is fixedly connected with the anchoring through jack (5);
a second preformed hole (61) is transversely formed in the middle of the pier (92), a pull rod (6) is arranged in the second preformed hole (61), one end of the pull rod (6) penetrates through the second preformed hole (61) to be anchored on the left side wall of the pier (92), and the other end of the pull rod (6) penetrates through a preformed hole of the connecting steel box (2) to be fixedly connected with the tensioning feed-through jack (3);
a support rod (8) is arranged between the abutment (92) and the pushing jack (4).
2. The counterforce device for the pier stud pseudo-static test according to claim 1, wherein: the test steps are as follows:
s1: starting the anchoring penetrating jack (5), and tensioning the vertical lacing wire (7) by adopting the anchoring penetrating jack (5) to finish the test preparation work;
s2: starting the tensioning penetrating jack (3), and stretching the pull rod (6) by the tensioning penetrating jack (3) to realize the simulation of the tension effect of the test pier stud (9);
s3: and starting the pushing jack (4), and pushing the supporting rod (8) by the pushing jack (4) to realize the simulation of the pushed effect of the test pier stud (9).
CN201910156134.5A 2019-03-01 2019-03-01 Counterforce device for pier stud pseudo-static test Active CN110018045B (en)

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Application Number Priority Date Filing Date Title
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CN110018045B true CN110018045B (en) 2022-01-28

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Publication number Priority date Publication date Assignee Title
CN111157376A (en) * 2020-02-24 2020-05-15 辽东学院 Base-free reinforced concrete column static test device

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CN106087765A (en) * 2016-08-10 2016-11-09 中交公局海威工程建设有限公司 High pier pier top Cast-in-place concrete bracket precompressed charger
CN107012795A (en) * 2017-05-22 2017-08-04 中国铁建大桥工程局集团有限公司 A kind of continuous bridge pre-pressing bracket device and its construction method
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CN108487341A (en) * 2018-06-21 2018-09-04 广州市汇富盈投资有限公司 A kind of large-tonnage static test counterforce structure and static-load testing device

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JPH0719973A (en) * 1993-06-29 1995-01-20 Chiyoda Corp Load test device for pile concurrently with reaction pile and load test method
CN2635739Y (en) * 2003-06-12 2004-08-25 柳建国 Vertical pressure-resisting static loading tester for pile base
CN201031400Y (en) * 2007-05-18 2008-03-05 河北省建筑科学研究院 Combined anchored internally supporting static loading tester
CN201749036U (en) * 2010-08-11 2011-02-16 中铁三局集团有限公司 Hanging basket static test device
CN102051858A (en) * 2010-12-08 2011-05-11 四川路航建设工程有限责任公司 Jack loading triangular truss hanging basket and load test construction method thereof
CN205620098U (en) * 2016-04-28 2016-10-05 福州大学 A loading device for testing reinforced concrete bridge pier anti -seismic performance
CN106087765A (en) * 2016-08-10 2016-11-09 中交公局海威工程建设有限公司 High pier pier top Cast-in-place concrete bracket precompressed charger
CN206828969U (en) * 2017-04-28 2018-01-02 中国水利水电第七工程局有限公司 A kind of high pier stud bearing platform counter-force prepressing device
CN107012795A (en) * 2017-05-22 2017-08-04 中国铁建大桥工程局集团有限公司 A kind of continuous bridge pre-pressing bracket device and its construction method
CN108487341A (en) * 2018-06-21 2018-09-04 广州市汇富盈投资有限公司 A kind of large-tonnage static test counterforce structure and static-load testing device

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