CN203429563U - Pier bottom mass concrete temperature regulating device - Google Patents
Pier bottom mass concrete temperature regulating device Download PDFInfo
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- CN203429563U CN203429563U CN201320549636.2U CN201320549636U CN203429563U CN 203429563 U CN203429563 U CN 203429563U CN 201320549636 U CN201320549636 U CN 201320549636U CN 203429563 U CN203429563 U CN 203429563U
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- concrete
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- pier
- regulating device
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Abstract
The utility model relates to a pier bottom mass concrete temperature regulating device and provides a device for temperature regulation of mass concrete at the bridge pier bottom. The temperature regulating device comprises a temperature measuring element and a heat dissipation pipe, the temperature measuring element is installed in a bridge pier wall above the pier bottom and embedded in the concrete, and the heat dissipation pipe is installed in the pier bottom and embedded in the concrete. The temperature regulating device is simple in process and easy to assemble, a bridge pier can be protected in extreme weather by pier bottom temperature measurement and regulation, the service life of a bridge is prolonged, and the safety factor of the bridge is improved.
Description
Technical field
The utility model relates to Bridge Pier Construction technical field, is specially a kind of concrete in mass at the bottom of bridge pier pier and carries out temperature controlled device.
Background technology
In the building construction process of the especially big bridge pier of ditch of looking as far as one's eyes can see, because the parabolic linearity of bridge pier shape and pier shaft are up to 105m, higher to the bearing capacity of abutment and stability requirement, at the bottom of pier, required volume of concrete is larger.Pier base concrete quantity is 1979.5m
3, in work progress, how to solve the construction quality that a concrete temperature control difficult problem has directly determined Large Bridge Pier.Adopting effective and feasible temperature controlling instruments is the necessary means that guarantees workmanship and construction safety.
Utility model content
The technical problem that the utility model solves is to provide the temperature regulating device of concrete in mass at the bottom of a kind of pier, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A temperature regulating device for concrete in mass at the bottom of pier, comprises temperature element and radiating tube, and described temperature element is arranged in the bridge pier wall of top at the bottom of pier, is embedded in concrete, and described radiating tube is embedded in concrete in being arranged at the bottom of pier.
In the utility model, described temperature element be take four as one group, is connected to squarely, and every group of temperature element is arranged in bridge pier wall as a point for measuring temperature.
In the utility model, described radiating tube be take two as one group, is the form of middle part water inlet both sides water outlet.
In the utility model, described radiating tube is the heatsink transverse pipe that laterally circulation is arranged and two kinds of longitudinal radiating tube that longitudinally circulation are arranged, it is slightly higher than longitudinal radiating tube that described heatsink transverse pipe is embedded in concrete position.
Beneficial effect: the utility model technique is simple, assembling easily, by the temperature measure and control at the bottom of pier, can be protected bridge pier in more extreme weather, extends the application life of bridge, improves the safety factor of bridge.
Accompanying drawing explanation
Fig. 1 is side cross-sectional, view at the bottom of the pier of the utility model preferred embodiment;
Fig. 2 is opposite side view at the bottom of the pier of the utility model preferred embodiment;
Fig. 3 is the A-A cross section temperature element measuring point distribution map of the utility model preferred embodiment;
Fig. 4 is the B-B cross section temperature element measuring point distribution map of the utility model preferred embodiment;
Fig. 5 is the A pipeline layort of the radiating tube of the utility model preferred embodiment;
Fig. 6 is the B pipeline layort of the radiating tube of the utility model preferred embodiment;
Fig. 7 is that the solid of the radiating tube of the utility model preferred embodiment is buried distribution map underground.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Temperature regulating device referring to concrete in mass at the bottom of a kind of pier of Fig. 1-7, in order to solve a difficult problem for concrete temperature control in the work progress of concrete in mass at the bottom of grand bridge bridge pier pier, the technical scheme of taking is: 1. in concrete, bury temperature element underground, Accurate Determining temperature; 2. in concrete, bury radiating tube underground, reduce temperature; 3. concrete surface moist curing, prevents the excessive lifting of temperature.
The temperature measurement error of temperature element is not more than 0.3 ℃ (under 25 ℃ of environment); Test specification :-30 ℃ ~ 150 ℃; Insulaion resistance should be greater than 500M.Before testing element is installed, 1m place does not damage through soaking 24h under water; Testing element jiont treatment position should be accurate, and fixing should be firm, and adiabatic with structure reinforcing bars and fixed mount metallic object; The suitable centralized arrangement of lead-out wire of testing element, and should be protected; Testing element around should be protected, in concreting process, and directly shock-testing temperature element and lead-out wire thereof during blanking; While vibrating, vibrator must not touch temperature element and lead-out wire.In pier base concrete, temperature element is arranged and is seen Fig. 1-4.
Thermometric record is by designating a special person to take charge temperature observation, and the Continuous Observation time must not be less than 15 days; In casting of concrete in mass body, show the test of the temperature difference, temperature control speed and environment temperature and temperature strain, after concreting, be often no less than round the clock 4 times; The data of measuring will arrange at any time, analyze immediately, pinpoint the problems and will take immediate steps.
In described concrete, bury radiating tube underground, radiating tube adopts φ 46 * 3mm steel pipe, and the connection between tube and tube adopts supporting with it joint.Radiating tube spacing 1.5m.After radiating tube installs, carry out flushing test, guarantee unobstructed and water-tight.In radiating tube, adopt circulating water heat radiation temperature control, logical cold water when starting concreting, water flowing is 15 days continuously, and hydraulic pressure can suitably be adjusted according to weather and heat of hydration situation, delivery port water temperature should be controlled at below 40 ℃ as far as possible.Radiating tube bury underground with concreting process in, prevent from stopping up and leaking, the sealing of hole that should be in the milk after finishing using, exposure part will be excised.At the bottom of pier, in concrete in mass, radiating tube layout is shown in Fig. 5-7.
By heat radiation, guarantee that concrete casting building body temperature rise value on molding temperature basis should not be greater than 50 ℃; In concrete casting building body, show the temperature difference and must not be greater than 25 ℃; The temperature control speed of concrete casting building body should not be greater than 2 ℃/d; Concreting surface and atmosphere temperature-difference should not be greater than 20 ℃.
Concrete before condensing, the shrinkage crack that surface comparatively fast produces because of dehydration.Plastic shrinkage cracks generally occurs at xeothermic or strong wind weather, wide in the middle of crack is more, two ends are thin and different in size, mutual discontinuous state.The measure of developing in construction: select silicate or Portland cement that the less early strength of drying shrinkage value is higher during construction, the strict water/binder ratio of controlling, participate in high efficiency water reducing agent and increase the concrete slump and workability, reduce cement and water consumption, before concreting, by building face and template, sprinkle water moistening, build rear timely covering curing, and keep concrete final set front surface moistening, at high temperature with strong wind weather arranges sunshade and the facility that keeps out the wind.
Thermal cracking mostly occurs in the concrete structure of mass concrete surface or difference variation larger area.After concreting, in hardening process, hydrated cementitious produces a large amount of heats of hydration, because concrete volume is larger, a large amount of heats of hydration accumulates in inside concrete and is difficult for distributing, cause internal temperature sharply to rise, and concrete surface heat radiation is very fast, so just form the inside and outside larger temperature difference, the larger temperature difference causes inner and outside degree of expanding with heat and contract with cold different, make concrete surface produce certain tensile stress, when tensile stress surpasses concrete ultimate tension, concrete surface will produce crack, mostly occurred in the concrete construction middle and later periods in this crack.
The measure of developing in construction: when high temperature season is built, employing is set up the ancillary methods such as sunbreaker and controlled concrete temperature rise, reduces the temperature of concreting.Reasonable arrangement working procedure, layering, block placement, be beneficial to heat radiation, reduces constraint.At inside concrete, cooling pipe is set, water flowing is cooling, reduce concrete internal-external temperature difference, and strengthen the monitoring of surface temperature of concrete, after concreting, use in time the coverings such as moistening straw screen or mat, numb sheet, and note watering maintenance, proper extension curing time, guarantees concrete surface Slow cooling.In cold season, concrete surface should arrange Insulation, to prevent that cold wave from attacking.
Temperature regulating device described in the utility model has been successfully applied to yellow Korea Spro and has waited the look as far as one's eyes can see construction of ditch Large Bridge Pier concrete in mass of railway engineering.Convenient temperature control, practicality in work progress, testing result shows: at the bottom of pier, the construction quality of concrete in mass meets design requirement, the construction quality of concrete in mass at the bottom of the ditch Bridge Pier that guarantees to look as far as one's eyes can see.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a temperature regulating device for concrete in mass at the bottom of pier, is characterized in that, comprises temperature element and radiating tube, and described temperature element is arranged in the bridge pier wall of top at the bottom of pier, is embedded in concrete, and described radiating tube is embedded in concrete in being arranged at the bottom of pier.
2. the temperature regulating device of concrete in mass at the bottom of a kind of pier according to claim 1, is characterized in that, described temperature element be take four as one group, is connected to squarely, and every group of temperature element is arranged in bridge pier wall as a point for measuring temperature.
3. the temperature regulating device of concrete in mass at the bottom of a kind of pier according to claim 1, is characterized in that, described radiating tube be take two as one group, is the form of middle part water inlet both sides water outlet.
4. the temperature regulating device of concrete in mass at the bottom of a kind of pier according to claim 3, it is characterized in that, described radiating tube is the heatsink transverse pipe that laterally circulation is arranged and two kinds of longitudinal radiating tube that longitudinally circulation are arranged, it is slightly higher than longitudinal radiating tube that described heatsink transverse pipe is embedded in concrete position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549636.2U CN203429563U (en) | 2013-09-05 | 2013-09-05 | Pier bottom mass concrete temperature regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549636.2U CN203429563U (en) | 2013-09-05 | 2013-09-05 | Pier bottom mass concrete temperature regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203429563U true CN203429563U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549636.2U Expired - Fee Related CN203429563U (en) | 2013-09-05 | 2013-09-05 | Pier bottom mass concrete temperature regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203429563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184936A (en) * | 2019-06-10 | 2019-08-30 | 中南大学 | Large span curve rigid frame bridge deformation control method and system based on monitoring temperature |
-
2013
- 2013-09-05 CN CN201320549636.2U patent/CN203429563U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184936A (en) * | 2019-06-10 | 2019-08-30 | 中南大学 | Large span curve rigid frame bridge deformation control method and system based on monitoring temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20160905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |