CN2465171Y - Datum beam free vertical settlement remote measurer - Google Patents
Datum beam free vertical settlement remote measurer Download PDFInfo
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- CN2465171Y CN2465171Y CN 00255843 CN00255843U CN2465171Y CN 2465171 Y CN2465171 Y CN 2465171Y CN 00255843 CN00255843 CN 00255843 CN 00255843 U CN00255843 U CN 00255843U CN 2465171 Y CN2465171 Y CN 2465171Y
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Abstract
The utility model relates to a vertical settlement remote measurer without a datum beam. The utility model composed of a plurality of containers, displacement sensors and circuit parts is characterized in that the rod-shaped iron cores of the displacement sensors are vertically fixed to floaters and arranged between a primary coil and a secondary coil, and the floaters are arranged on liquid surfaces in the containers. The height variation of the liquid surfaces in the containers is input in a computer through the displacement sensors in order to calculate the settlement and the static load of a single pile. Due to the adoption of soft contact, the utility model has the advantages of long measuring distance and high interference resistance.
Description
The utility model belongs to the measurement mechanism of the vertical quiet lotus load-bearing capacity of pile foundation of construction work, a kind of specifically vertical settling without reference beam remote measuring unit.
When buildings is done the basis with stake, all need carry out the test of single-pile static load axial compression load-bearing capacity in advance, to determine the design load-bearing capacity of single pile.The test of single pile vertical static load lotus is a most important method of determining single pile ultimate bearing capacity and settling character.For the test of the quiet lotus of single pile provides the counter-force mode generally can be divided into anchoring pile mode and preloading mode, along with the stake footpath of being adopted constantly increases, at present, the test of the single pile vertical static load lotus of these two kinds of counter-force modes is in various degree the installation difficulty that has run into datum line beam all.Adopting under the situation of accumulation load method as counter-force, even " technical code for building pile foundation " requirement (JGJ94-94) according to China Construction Industry Press's nineteen ninety-five publication, because preloading is big to the coverage on ground, benchmark is also along with preloading body in the process of the test changes the variation of the influence on ground.When adopting the anchoring pile method, situation is similar substantially.In theory, can adopt reference stake to solve this problem away from test pile, anchoring pile or to the method for carrier buttress, but in fact so, datum line beam will be very long, make datum line beam as the shaped steel that Japan adopts length to reach 10M, the difficulty of its anti-sun direct projection, aspect such as windproof, all be need be bigger cost could solve, even like this, its benchmark does not usually have complete ablation experiment coverage yet.And the disclosed patent No. of Patent Office of the People's Republic of China is 87102786 and 88102101 patent of invention, though there is not datum line beam, has the problem that will construct again to single pile.
The purpose of this utility model provides a kind of datum line beam that both do not had, and vertical settling without reference beam remote measuring unit that again can remote measurement is to overcome above-mentioned deficiency.
To achieve these goals, the utility model still adopts accumulation load method to measure as the counter-force mode, be characterized in cancelling datum line beam, a plurality of containers are installed on tested pile crown, the lower end of each container by conduction pipe be fixed on a benchmark container on the reference stake and communicate, in container, inject liquid then, when measuring, calculate the settling amount and the static load of single pile according to the variation of liquid levels height.
In order to realize said method, device of the present utility model is made up of a plurality of containers 4, displacement transducer W and circuit part, wherein displacement transducer W is made of float 5, bar-shaped iron core 3, primary coil 1, secondary coil 2, coil rack, shell, the bar-shaped iron core 3 that is characterized in displacement transducer W is vertically fixed on the float 5, and place between primary coil 1 and the secondary coil 2, float 5 is placed on the container 4 interior liquid levels, primary coil 1 be fixed on the coil rack after secondary coil 2 is connected by connecting link, coil rack is fixed with the shell that is connected on the container 4.
The top of above-mentioned float 5 also has a guide piece 6.
Advantage of the present utility model is:
1, the utility model can make the distance between measured target and the benchmark expand 40 meters to; And the distance of traditional datum line beam mode between the two can reach 10 meters very difficulties, because this need reach 20 meters datum line beam.What the utility model brought is remote, and following important use value is arranged:
1.1 in the vertical vertical load test in the vertical vertical load test of stake of counter-force is done in preloading, at large diameter pile, must allow has sizable horizontal range between test pile and the benchmark, otherwise benchmark is not metastable just.Under present condition, this distance has only the utility model to reach:
1.2 in the ponding loading test of large-scale soil, must allow has sizable horizontal range between test electricity and the benchmark, otherwise benchmark is not metastable just.Under present condition, this distance has only the utility model to reach.
2, the utility model has good adaptability to environment, and except that the gauge head place needs anti-sun direct projection is had certain requirement, other places almost do not have specific (special) requirements.Traditional mode then must be accomplished anti-sun direct projection to whole datum line beam, and this is obviously much more difficult.
3, because the utility model adopts is soft contact, therefore strong interference immunity, installs the utility model before preloading, just can be used to measure the stake top sedimentation that is produced in the preloading process.
Fig. 1 is that the utility model is measured view.
Fig. 2 is the utility model level measuring synoptic diagram.
Fig. 3 is the utility model displacement transducer schematic diagram.
Fig. 4 is the utility model displacement sensor structure figure.
Fig. 5 is the utility model circuit part block scheme.
The utility model is described in further detail below in conjunction with accompanying drawing.
The alternating voltage of a fixed frequency of primary coil 1 input of the utility model device, its secondary coil 2 connecting circuit parts, circuit part is made up of data acquisition circuit and computing machine, data acquisition circuit is used to gather the alternating voltage of the output of each displacement transducer W secondary coil 2, and the input computing machine.Because primary coil 1 input of displacement transducer W is the alternating voltage of a fixed frequency, then secondary coil 2 will produce induction electromotive force, variation (liquid level variation in the container 4) along with bar-shaped iron core 3 positions, mutual induction amount just changes, the induction electromotive force that secondary coil 2 produces is also different, and so just the changing value that container 4 interior liquid level variation are transformed into voltage signal is exported to computing machine.Computing machine is obtained data from each data acquisition circuit after, compare in data with calculator memory, and after calculating and convert by software, just can be by output device output by the vertical sedimentation amount and the static load of peg, to reach the purpose of this utility model.
The utility model guide piece 6 is used to control the VTOL (vertical take off and landing) of bar-shaped iron core 3.
Claims (2)
1, a kind of vertical settling without reference beam remote measuring unit, it is made up of a plurality of containers, displacement transducer and circuit part, wherein displacement transducer is made of float, bar-shaped iron core, primary coil, secondary coil, coil rack, shell, it is characterized in that: the bar-shaped iron core of displacement transducer is vertically fixed on the float, and place between primary coil and the secondary wire, float is placed on the interior liquid level of container, primary coil be fixed on the coil rack after secondary coil is connected by connecting link, coil rack is fixed with the shell that is connected on the container.
2, according to the described vertical settling without reference beam remote measuring unit of claim 1, it is characterized in that: the top of float also has a guide piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255843 CN2465171Y (en) | 2000-11-30 | 2000-11-30 | Datum beam free vertical settlement remote measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255843 CN2465171Y (en) | 2000-11-30 | 2000-11-30 | Datum beam free vertical settlement remote measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2465171Y true CN2465171Y (en) | 2001-12-12 |
Family
ID=33612691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00255843 Expired - Fee Related CN2465171Y (en) | 2000-11-30 | 2000-11-30 | Datum beam free vertical settlement remote measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2465171Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133671A (en) * | 2015-08-26 | 2015-12-09 | 上海交通大学 | Device for connecting indoor vertical static load model pile with pressure sensor |
| CN106223376A (en) * | 2016-09-28 | 2016-12-14 | 中铁大桥科学研究院有限公司 | A kind of pile bearing capacity test displacement tester and method |
| CN112160356A (en) * | 2020-10-16 | 2021-01-01 | 甘肃精信建设工程质量检测有限公司 | Fixture for single-pile vertical compression-resistant static load test anchor pile method |
| CN114809121A (en) * | 2022-03-28 | 2022-07-29 | 台州市椒江建设工程质量检测中心有限公司 | Pile foundation horizontal load test device |
-
2000
- 2000-11-30 CN CN 00255843 patent/CN2465171Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133671A (en) * | 2015-08-26 | 2015-12-09 | 上海交通大学 | Device for connecting indoor vertical static load model pile with pressure sensor |
| CN105133671B (en) * | 2015-08-26 | 2017-03-22 | 上海交通大学 | Device for connecting indoor vertical static load model pile with pressure sensor |
| CN106223376A (en) * | 2016-09-28 | 2016-12-14 | 中铁大桥科学研究院有限公司 | A kind of pile bearing capacity test displacement tester and method |
| CN112160356A (en) * | 2020-10-16 | 2021-01-01 | 甘肃精信建设工程质量检测有限公司 | Fixture for single-pile vertical compression-resistant static load test anchor pile method |
| CN114809121A (en) * | 2022-03-28 | 2022-07-29 | 台州市椒江建设工程质量检测中心有限公司 | Pile foundation horizontal load test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |