CN105157937A - Detection apparatus and detection method for the earthquake-proof performance of sleeve mortar anchor connecting pieces - Google Patents
Detection apparatus and detection method for the earthquake-proof performance of sleeve mortar anchor connecting pieces Download PDFInfo
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- CN105157937A CN105157937A CN201510161155.8A CN201510161155A CN105157937A CN 105157937 A CN105157937 A CN 105157937A CN 201510161155 A CN201510161155 A CN 201510161155A CN 105157937 A CN105157937 A CN 105157937A
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- sleeve
- vibration
- anchor
- web member
- reinforcing bar
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Abstract
The invention discloses a detection apparatus and detection method for the earthquake-proof performance of sleeve mortar anchor connecting pieces. The detection apparatus comprises a computer, a vibration exciter, a vibration stand, a sleeve, a connecting pedestal and a mass ball. A steel bar is disposed in the sleeve. The steel bar is connected to the sleeve through grouting. The upper end of the sleeve is connected to the mass ball, and the lower end of the sleeve is fixed to the vibration stand through the connecting pedestal. The sleeve is fixed to the connecting pedestal through the steel bar. The computer controls the magnitude of seismic waves, and emits and receives signals for the vibration exciter. The mass ball is a circular solid ball, is even in mass, and will not be eccentric and be destroyed during vibration. The maximum frequency provided by the vibration stand is 50Hz. A great antivibration detection capability is achieved by means of the small vibration stand. The mass ball provides vibrational forces, and can be detachable for uses. The detection apparatus can quickly detect in batch whether mortar anchor connecting materials are damaged in an earthquake.
Description
Technical field
The present invention relates to construction engineering technical field, especially a kind of sleeve slurry anchor web member anti-seismic performance pick-up unit and detection method.
Background technology
Building industry industrialization is the inevitable direction of building enterprise's transition and upgrade, also be the only way of Building Trade in China development, as industrialized core content, fabricated construction system technical system whether maturation affects industrialized development, the anti-seismic performance for fabricated construction depends on the connection reliability of vertical reinforcement.Existing connection mainly adopts slurry anchor to connect (sleeve slurry anchor, restriction hoop slurry anchor etc.), at slurry anchor connecting portion, under geological process, connect grouting material and will bear the shearing of anchor connection generation, what tangential movement produced draws repeatedly, the many kinds of force effects such as pressure, grouting material is in complex stress condition, certain damage will be produced after geological process, after causing earthquake like this, the anchor connection performance of reinforcing bar reduces, this influence degree has much on earth, whether affect the security of structure, at present there are no research and report, existing anchor connection detection method only detects the connection tensile property under static load effect, there is significant limitation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sleeve slurry anchor web member anti-seismic performance pick-up unit and detection method, and whether under geological process have damage, whether affect its tensile property if detecting slurry anchor connecting material quickly and easily.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Sleeve slurry anchor web member anti-seismic performance pick-up unit, comprise computing machine, vibrator, shaking table, sleeve and mass ball, reinforcing bar is provided with in described sleeve, reinforcing bar is in the milk with sleeve and is connected, sleeve upper end is connected with mass ball, sleeve lower end is fixing on a vibration table by connecting base, and described sleeve is fixed on by reinforcing bar and connects on base.
Further, described computing machine is used for Earthquake occurrence control ripple size sending with Received signal strength to vibrator.
As preferably, described mass ball circular solids, uniform quality, can not produce eccentric destruction during vibration.
As preferably, the vibration frequency that described shaking table provides is 50Hz to the maximum.
A detection method for sleeve slurry anchor web member anti-seismic performance, detecting step is as follows:
S1: be in the milk in sleeve, forms sleeve slurry anchor, connects computing machine, vibrator, shaking table, sleeve slurry anchor and mass ball, parameters.
S2: power-off after vibration 30s ~ 70s, removes sleeve slurry anchor, and jockey carries out tensile test to sleeve slurry anchor.
S3: if grouting material reinforcing bar is extracted in sleeve, then the damage of this sleeve slurry anchor is serious, is judged to be defective; If reinforcing bar enters yielding stage or breaks, then the tensile test result of tensile test result and contrast groups is contrasted, and then analyze grouting material degree of impairment, judge whether grouting material can meet structural safety needs, whether qualified under geological process.
Further, described contrast groups is the sleeve slurry anchor of the same manufacture craft of employing not being subject to vibration force effect.
Further, described tensile test result is for extracting displacement and Ultimate Tensile power.
The invention has the beneficial effects as follows: the present invention utilizes little shaking table to realize large shock resistance inspection, and mass ball provides vibration force, detachably uses, and whether rapid batch detects slurry anchor connecting material has damage under geological process.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is principle of the invention figure.
In figure: 1, computing machine, 2, vibrator, 3, shaking table, 4, sleeve, 5, mass ball, 6, connect base.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, the present invention discloses a kind of sleeve slurry anchor web member anti-seismic performance pick-up unit, comprise computing machine 1, vibrator 2, shaking table 3, sleeve 4, mass ball 5 be connected base 6, reinforcing bar is provided with in described sleeve 4, reinforcing bar and sleeve 4 are in the milk and are connected to form sleeve and starch anchor web member, this sleeve slurry anchor web member can have various ways, do not describe in the present embodiment, sleeve 4 upper end is connected with mass ball 5, sleeve 4 lower end is fixed on shaking table 3 by connecting base 6, described sleeve 4 is fixed on by reinforcing bar and connects on base 6, connected mode is threaded or other connected modes, but no matter which kind of connected mode, all to realize dismountable function, described computing machine 1 is used for Earthquake occurrence control ripple size sending with Received signal strength to vibrator 2, described mass ball 5 circular solids, uniform quality, eccentric destruction can not be produced during vibration, the vibration frequency that described shaking table 3 provides is 50Hz to the maximum.
The step of sleeve slurry anchor web member anti-seismic performance detection method is:
(1) be in the milk in sleeve, form sleeve slurry anchor, connect computing machine, vibrator, shaking table, sleeve slurry anchor and mass ball, parameters;
(2) power-off after vibration 30s ~ 70s, removes sleeve slurry anchor, and jockey carries out tensile test to sleeve slurry anchor;
(3) if grouting material reinforcing bar is extracted in sleeve, then this kind of grouting material damage is serious, is judged to be defective; If reinforcing bar enters yielding stage or breaks, then the tensile test result of tensile test result and contrast groups is contrasted, and then analyze grouting material degree of impairment, judge whether grouting material can meet structural safety needs, whether qualified under geological process.
Wherein, tensile test result is for extracting displacement and Ultimate Tensile power, and contrast groups is the sleeve slurry anchor of the same manufacture craft of employing not being subject to vibration force effect.
The present invention creatively produces pressure simulation Practical Project middle sleeve slurry anchor web member pressurized situation with the deadweight of mass ball 5, under the vibration of shaking table, the effect of inertial force to sleeve slurry anchor is produced with mass ball 5, the situation of simulation Practical Project middle sleeve slurry anchor web member under tension, shearing, Moment, thus the actual forced status of grouting material under failure under earthquake action, after input ground seismic wave function, check its geological process connection by post-installed fastenings performance with pull-out test again, thus the anchoring property after this kind of connection or anchoring slurry geological process can be determined.
As shown in Figure 2, shaking table 3, mass ball 5 and sleeve anchor composition forced vibration system, mass ball 5 produces inertial force in motion process, sleeve anchor and reinforcing bar form variation rigidity rod member, restoring force is provided, the seismic event that shaking table 3 provides according to vibrator 2 vibrates, and drives mass ball 5 to move together.When the vibration table vibration of shaking table 3, the relative displacement of any time mass ball m is x (t), and any time displacement of vibration table is x
gt (), the absolute acceleration of mass ball m is
the rigidity of anchoring rod piece system is set to k, and get mass ball m for departing from body, the inertial force suffered by it is
owing to rubbing in material, the friction of element joints and the damping force of surrounding medium to vibration be
elastic restoring force is f
s=-kx (t), according to D'Alembert's principle, the balance equation departing from weight ball m is f
i+ f
d+ f
s=0, thus the differential equation of motion obtaining mass ball m any time t under geological process
because anchoring rod piece system adopts slurry to connect, so slurry will be subject to course under cyclic loading in motion process, consider from energy point of view, above formula each power contraposition allochthonous deposit will be divided
And then any time energy conservation equation can be obtained:
Section 1 is the total kinetic energy of structure, stop gradually with the stopping of earthquake motion loading in this structural system, Section 2 is damping consumed energy, relevant with the value size of damping ratio, Section 3 comprises recoverable elastic strain energy (being finally zero) and is hysteretic energy of structures, it is the main power consumption mode of structure, it is the gross energy of input earthquake structure on the right of equation, namely structure always inputs energy, consider energy conservation, total input energy will be dissipated by damping and hysteresis, because slurry anchor material is mainly nonmetallic materials, using cement as bonding agent, thus, under geological process, slurry anchor material absorbs certain energy by with damping and hysteresis mode, damage in various degree can be brought, whether this damage can affect the performance of the anchor connection of reinforcing bar, can be easy to draw by the tensile test of anchoring piece, thus the adhesive property of pulp anchor material under geological process can be checked.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.
Claims (7)
1. sleeve slurry anchor web member anti-seismic performance pick-up unit, it is characterized in that, comprise computing machine, vibrator, shaking table, sleeve and mass ball, reinforcing bar is provided with in described sleeve, reinforcing bar is in the milk with sleeve and is connected, sleeve upper end is connected with mass ball, and sleeve lower end is fixing on a vibration table by connecting base, and described sleeve is fixed on by reinforcing bar and connects on base.
2. sleeve slurry anchor web member anti-seismic performance pick-up unit according to claim 1, is characterized in that, described computing machine is used for Earthquake occurrence control ripple size sending with Received signal strength to vibrator.
3. anchor web member anti-seismic performance pick-up unit starched by sleeve according to claim 1, it is characterized in that, described mass ball circular solids, uniform quality, can not produce eccentric destruction during vibration.
4. anchor web member anti-seismic performance pick-up unit starched by sleeve according to claim 1, and it is characterized in that, the vibration frequency that described shaking table provides is 50Hz to the maximum.
5. as described in any one of Claims 1 to 4, the detection method of anchor web member anti-seismic performance starched by sleeve, and it is characterized in that, detecting step is as follows:
S1: reinforcing bar is put into sleeve, is in the milk in sleeve, forms sleeve slurry anchor, connects computing machine, vibrator, shaking table, sleeve slurry anchor and mass ball, parameters.
S2: power-off after vibration 30s ~ 70s, removes sleeve slurry anchor, and jockey carries out tensile test to sleeve slurry anchor.
S3: if grouting material reinforcing bar is extracted in sleeve, then the damage of this sleeve slurry anchor is serious, is judged to be defective; If reinforcing bar enters yielding stage or breaks, then the tensile test result of tensile test result and contrast groups is contrasted, and then analyze grouting material degree of impairment, judge whether grouting material can meet structural safety needs, whether qualified under geological process.
6. the detection method of anchor web member anti-seismic performance starched by sleeve according to claim 5, it is characterized in that, described contrast groups is the sleeve slurry anchor of the same manufacture craft of employing not being subject to vibration force effect.
7. the detection method of anchor web member anti-seismic performance starched by sleeve according to claim 5, and it is characterized in that, described tensile test result is for extracting displacement and Ultimate Tensile power.
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| CN201510161155.8A CN105157937B (en) | 2015-04-07 | 2015-04-07 | Sleeve slurry anchor connection part anti-seismic performance detection device and detection method |
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| CN201510161155.8A CN105157937B (en) | 2015-04-07 | 2015-04-07 | Sleeve slurry anchor connection part anti-seismic performance detection device and detection method |
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| CN105157937B CN105157937B (en) | 2019-04-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067220A (en) * | 2020-09-10 | 2020-12-11 | 泰安泰烁岩层控制科技有限公司 | Clamping piece type anchorage vibration test device and application thereof |
| CN114543875A (en) * | 2022-01-13 | 2022-05-27 | 中国民用航空飞行学院 | Anti-interference satellite navigation equipment detecting system of big dipper |
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| CN112067220A (en) * | 2020-09-10 | 2020-12-11 | 泰安泰烁岩层控制科技有限公司 | Clamping piece type anchorage vibration test device and application thereof |
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| CN114543875A (en) * | 2022-01-13 | 2022-05-27 | 中国民用航空飞行学院 | Anti-interference satellite navigation equipment detecting system of big dipper |
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| CN105157937B (en) | 2019-04-23 |
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Effective date of registration: 20210810 Address after: 238200 Huangzhuang front room, Taiyanghe Road, he County Economic Development Zone, Ma'anshan City, Anhui Province (the 9th from east to West) Patentee after: Ma'anshan Xinfeng construction and installation Co.,Ltd. Address before: 230601 Ziyun Road, Hefei economic and Technological Development Zone, Anhui 292 Patentee before: ANHUI JIANZHU University |