阅读说明：本技术 一种结构地坪保温结构及施工方法 (Structural terrace heat insulation structure and construction method ) 是由 郭涛 苏浩伟 王宇琛 陈龙 陈昊 于 2021-09-30 设计创作，主要内容包括：一种结构地坪保温结构及施工方法,包括多个伴热单元,所述伴热单元包括用于隔离混凝土与加热设备的波纹管、用于混凝土的升温的加热设备、监测加热温度的温度传感器以及对多个伴热单元温度进行控制的控制器,所述波纹管绑扎在待浇筑的结构地坪上层钢筋的底部,所述波纹管直线布设,相邻波纹管平行布设,每根波纹管内插装有与波纹管长度相匹配的加热设备,所述波纹管内每隔一段间距布设有一温度传感器,所述加热设备的一端通过线路与设置在待浇筑结构地坪范围外的控制器连接,本发明伴热单元可循环使用,施工成本低,升温设备易得、安装简单,升温速度快,不需要复杂的施工工艺,便于自动化管理,满足绿色环保的施工要求,经济效益高。(A structure terrace heat preservation structure and a construction method thereof comprise a plurality of heat tracing units, wherein each heat tracing unit comprises a corrugated pipe for isolating concrete and heating equipment, the heating equipment for raising the temperature of the concrete, a temperature sensor for monitoring the heating temperature and a controller for controlling the temperature of the plurality of heat tracing units, the corrugated pipes are bound at the bottom of upper reinforcing steel bars of a structure terrace to be poured, the corrugated pipes are linearly arranged, adjacent corrugated pipes are arranged in parallel, the heating equipment matched with the lengths of the corrugated pipes is inserted in each corrugated pipe, the temperature sensors are arranged in the corrugated pipes at intervals, one end of the heating equipment is connected with the controller arranged outside the range of the structure terrace to be poured through a circuit, the heat tracing units can be recycled, the construction cost is low, the temperature raising equipment is easy to obtain, the installation is simple, the temperature raising speed is high, does not need a complex construction process, is convenient for automatic management, meets the construction requirement of green and environmental protection, and has high economic benefit.)

1. The utility model provides a structure terrace insulation construction, its characterized in that, includes a plurality of heat tracing units, heat tracing unit is including the bellows that is used for keeping apart concrete and firing equipment, the firing equipment that is used for the intensification of concrete, monitoring heating temperature's temperature sensor and carry out the controller controlled to a plurality of heat tracing unit temperatures, the bellows ligature is in the bottom of waiting the structure terrace upper reinforcing bar of pouring, the bellows straight line is laid, and adjacent bellows parallel is laid, and the cartridge has with bellows length assorted firing equipment in every bellows, a temperature sensor has been laid to one section interval in the bellows, firing equipment's one end is passed through the circuit and is connected at the controller that waits to pour structure terrace scope outside.

2. The structural floor insulation of claim 1, wherein the heating device is a heat tracing cable and the temperature sensor is an electric heat tracing temperature sensor.

3. The structural floor insulation structure of claim 2, wherein the controller comprises a distribution box, and an air protection switch, an ac out-of-limit alarm isolator, a temperature controller and a heat tracing cable short circuit monitor disposed in the distribution box, wherein the electric heat tracing temperature sensor is electrically connected to the temperature controller through the ac out-of-limit alarm isolator, and the temperature controller is electrically connected to the heat tracing cable short circuit monitor and the air protection switch.

4. The structural floor insulation of claim 3, wherein adjacent bellows are spaced 200cm apart.

5. A construction method of a structural terrace heat insulation structure adopts the structural terrace heat insulation structure of claim 3 or 4, and is characterized by comprising the following steps:

a. determining the length of a corrugated pipe according to the area of a structural floor of a construction flowing water section, inserting heat tracing cables and electric heat tracing temperature sensors into the corrugated pipes in advance, penetrating one heat tracing cable into each corrugated pipe, and measuring the resistance value of each heat tracing cable before placing the heat tracing cables;

b. binding the corrugated pipe to the bottom of the upper-layer steel bar of the structural terrace after the binding of the steel bar of the cast structural terrace is finished, debugging the system after the integral installation is finished, casting the structural terrace, and temporarily sealing the openings at the two ends of the corrugated pipe during casting to prevent the openings at the two ends of the corrugated pipe from being blocked;

c. and after the structural terrace is poured, controlling the heat tracing cable to start working, setting the temperature of the temperature controller at 10-15 degrees, controlling the alternating current out-of-limit alarm isolator to cut off or switch on a power supply when the temperature controller reaches a set threshold value, and after the concrete is cured for seven days, drawing out the heat tracing cable and the electric heat tracing temperature sensor from the corrugated pipe for recycling.

6. The construction method of the structural terrace heat preservation structure according to claim 5, wherein in the step b, the corrugated pipe is installed without dead bending and knotting, the straight line deviation error of the corrugated pipe is within 2cm, the corrugated pipe is inspected after installation, and if the corrugated pipe has a broken hole, the corrugated pipe is wrapped by using an adhesive tape in a sealing manner.

7. The construction method of the structural terrace heat-insulating structure according to claim 5, wherein the heat tracing cable is QTV2-CT type.

8. The construction method of the structural terrace heat preservation structure according to claim 5, wherein in the step b, the system debugging specifically comprises, firstly, checking that the heat tracing unit and all the fittings are correctly installed, and the corrugated pipe is intact in appearance; disconnecting the air protection switches of all the loops, checking each loop and recording; before electrifying, measuring whether a power line is connected or not and whether a heat tracing cable is connected or not, checking whether an electric heat tracing temperature sensor is normal or not and whether a temperature controller is connected normally or not; whether the system is started freely or not is checked through testing, and whether the switches and the display lamps of the distribution box work normally or not is checked in addition; and (5) powering on for trial operation, and checking whether the heat tracing cable works normally or not by reducing or increasing the temperature at least three times.

9. The construction method of the structural terrace heat-insulating structure according to claim 5, wherein after the step c, grouting is performed to grouting channels formed in the corrugated pipes according to the bearing capacity requirement of the terrace;

mixing grouting materials according to a specified matching ratio and a mixing process, standing and exhausting after uniform stirring, simultaneously detecting the fluidity of grouting materials, ensuring that the initial fluidity is not less than 300mm, using a grouting machine, connecting the grouting machine with a grouting channel through a grouting pipe, grouting into the grouting channel one by one or in batches by adopting a pressure grouting method, controlling the flow rate of the grouting materials by controlling the grouting pressure, wherein the grout inlet and outlet holes at two ends of the grouting channel are not blocked during grouting, when the grout inlet and outlet holes start to overflow the grout outwards, and when the cross section of the grout inlet and outlet holes is full of overflow surfaces, plugging the grout outlet holes by plugging a rubber plug into the grout outlet holes, and after all the grout outlet holes are completely plugged, removing the grouting pipe and then plugging the grout inlet holes.

10. The construction method of the structural terrace heat-insulating structure according to claim 9, wherein the time interval from pulling out the grouting pipe to plugging the rubber stopper is within 1s when the grout inlet is plugged.

Technical Field

The invention relates to a structural terrace heat-insulation structure and a construction method.

Background

In northern areas, the atmospheric temperature is lower in winter, and is in the range of-5 degrees to-15 degrees in most of time. The low temperature in winter causes great difficulty in concrete pouring and maintenance. If the heat preservation measure is not good, the concrete surface is very easy to be frozen during the slurry lifting and trowelling of the terrace without the facing high-precision structure, and the quality problems of loose concrete, insufficient strength, cracking, poor appearance and the like can occur in the later period.

At present, common measures for winter construction are as follows: heat storage method, comprehensive heat storage method, steam curing method, negative temperature curing method, electric heating method, etc. When the atmospheric temperature is low, the heat storage method, the comprehensive heat storage method and the negative temperature heat method can not ensure the curing temperature of the concrete and can not prevent the concrete from being frozen. Meanwhile, the heat insulation material covers the terrace, so that the leveling precision of the terrace is easy to meet the requirement; although the steam curing can effectively improve the increase speed of the concrete strength, the steam curing implementation conditions are harsh, and the construction requirements of rapidness and high efficiency cannot be met under the construction conditions of large-area terrace and low atmospheric temperature; during the maintenance of electric heating method, power consumption is great and heating temperature is uncontrollable, and it is great with the regional difference in temperature of not placing the heat source by the heating region, lead to terrace surface temperature stress uneven, the dehydration scheduling problem too fast to cause the terrace shrink fracture too big.

Disclosure of Invention

The invention provides the structural terrace heat-insulation structure and the construction method which have the advantages of low construction cost, simple installation, high temperature rise speed and cyclic use and are used for overcoming the defects of the prior art.

In order to achieve the purpose, the invention firstly provides a structural terrace heat insulation structure which comprises a plurality of heat tracing units, wherein each heat tracing unit comprises a corrugated pipe used for isolating concrete from a heating device, the heating device used for heating the concrete, a temperature sensor used for monitoring the heating temperature and a controller used for controlling the temperature of the plurality of heat tracing units, the corrugated pipes are bound at the bottom of upper-layer steel bars of a structural terrace to be poured, the corrugated pipes are linearly arranged, adjacent corrugated pipes are arranged in parallel, the heating device matched with the length of the corrugated pipes is inserted into each corrugated pipe, the temperature sensors are arranged in the corrugated pipes at intervals, and one end of the heating device is connected with the controller arranged outside the range of the structural terrace to be poured through a circuit.

In this embodiment, the heating device adopts a heat tracing cable, and the temperature sensor is an electric heat tracing temperature sensor.

In this embodiment, the controller includes block terminal and sets up air protection switch, interchange off-limit warning isolator, temperature controller and the companion's cable short circuit monitor in the block terminal, electric companion's temperature sensor is connected with the temperature controller electricity through interchange off-limit warning isolator, temperature controller and companion's cable short circuit monitor and air protection switch electricity are connected.

In the present embodiment, the distance between adjacent corrugated pipes is 200 cm.

The invention also comprises a construction method of the structural terrace heat insulation structure, and the construction method adopts the structural terrace heat insulation structure, and specifically comprises the following steps:

a. determining the length of a corrugated pipe according to the area of a structural floor of a construction flowing water section, inserting heat tracing cables and electric heat tracing temperature sensors into the corrugated pipes in advance, penetrating one heat tracing cable into each corrugated pipe, and measuring the resistance value of each heat tracing cable before placing the heat tracing cables;

b. binding the corrugated pipe to the bottom of the upper-layer steel bar of the structural terrace after the binding of the steel bar of the cast structural terrace is finished, debugging the system after the integral installation is finished, casting the structural terrace, and temporarily sealing the openings at the two ends of the corrugated pipe during casting to prevent the openings at the two ends of the corrugated pipe from being blocked;

c. and after the structural terrace is poured, controlling the heat tracing cable to start working, setting the temperature of the temperature controller at 10-15 degrees, controlling the alternating current out-of-limit alarm isolator to cut off or switch on a power supply when the temperature controller reaches a set threshold value, and after the concrete is cured for seven days, drawing out the heat tracing cable and the electric heat tracing temperature sensor from the corrugated pipe for recycling.

In the embodiment, in the step b, the corrugated pipe is not subjected to dead bending and knotting phenomena during installation, the straight line deviation error of the corrugated pipe is within 2cm, the corrugated pipe is inspected after installation, and if the corrugated pipe has a broken hole, the corrugated pipe is sealed and wrapped by using an adhesive tape.

In the embodiment, the heat tracing cable is QTV2-CT type.

In this embodiment, in the step b, the system debugging specifically includes checking that the heat tracing unit and all the accessories are correctly installed, and the corrugated pipe is intact in appearance; disconnecting the air protection switches of all the loops, checking each loop and recording; before electrifying, measuring whether a power line is connected or not and whether a heat tracing cable is connected or not, checking whether an electric heat tracing temperature sensor is normal or not and whether a temperature controller is connected normally or not; whether the system is started freely or not is checked through testing, and whether the switches and the display lamps of the distribution box work normally or not is checked in addition; and (5) powering on for trial operation, and checking whether the heat tracing cable works normally or not by reducing or increasing the temperature at least three times.

In the embodiment, after the step c, grouting is performed on grouting channels formed in the corrugated pipe according to the bearing capacity requirement of the terrace;

mixing grouting materials according to a specified matching ratio and a mixing process, standing and exhausting after uniform stirring, simultaneously detecting the fluidity of grouting materials, ensuring that the initial fluidity is not less than 300mm, using a grouting machine, connecting the grouting machine with a grouting channel through a grouting pipe, grouting into the grouting channel one by one or in batches by adopting a pressure grouting method, controlling the flow rate of the grouting materials by controlling the grouting pressure, wherein the grout inlet and outlet holes at two ends of the grouting channel are not blocked during grouting, when the grout inlet and outlet holes start to overflow the grout outwards, and when the cross section of the grout inlet and outlet holes is full of overflow surfaces, plugging the grout outlet holes by plugging a rubber plug into the grout outlet holes, and after all the grout outlet holes are completely plugged, removing the grouting pipe and then plugging the grout inlet holes.

In this embodiment, when the grout inlet is plugged, the time interval from the removal of the grouting pipe to the plugging of the rubber plug is within 1 s.

Compared with the prior art, the invention binds the corrugated pipes on the lower part of the upper layer steel bar of the terrace, one heat tracing cable is inserted into each corrugated pipe, each heat tracing cable forms a heat tracing unit together with an electric heat tracing temperature sensor, a temperature controller, an air protection switch, an alternating current out-of-limit alarm isolator and a heat tracing cable short circuit monitor, and the heat tracing unit is used for heating the terrace concrete, controlling the temperature, monitoring the circuit and the like. When the structural terrace is poured, the electric tracing cable starts to work, the temperature of the electric tracing cable is kept to change within a set temperature range by comparing the temperature of the temperature sensor with the temperature of the electric tracing temperature sensor, so as to achieve the purposes of heating and anti-freezing of the concrete of the structural terrace and controlling the heating temperature range, therefore, by adopting the construction method, on one hand, the heat tracing unit can be recycled, the construction cost is low, the heat tracing unit is easy to obtain, the installation is simple, the heating speed is high, no complex construction process is needed, the automatic management is convenient, the green and environment-friendly construction requirements are met, the economic benefit is high, on the other hand, the heating temperature of the terrace is controllable, the concrete is uniformly heated, the situation that the local temperature difference of the structural terrace is overlarge and the temperature stress crack is overlarge is generated is avoided, the construction speed is greatly improved compared with the previous terrace construction method, and the construction method is particularly suitable for the rapid construction of large-area terraces.

Drawings

Fig. 1 is a schematic structural view of the structural terrace heat-insulating structure of the invention.

Fig. 2 is a schematic structural view of the grouting hole of the present invention during grouting.

The reference numbers illustrate: 1. a distribution box; 2. the section of the facing-free high-precision structural terrace; 3. 2cm high strength corrugated pipe; 4. a heat tracing cable; 5. an electric tracing temperature sensor; 6. an air protection switch; 7. an alternating current out-of-limit alarm isolator; 8. a temperature controller; 9. a heat tracing cable short circuit monitor; 10. a pulp press; 11. grouting a pore channel; 12. and (4) a grouting pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, the invention provides a structural terrace heat preservation structure, which comprises a plurality of heat tracing units, wherein each heat tracing unit comprises a corrugated pipe 3 for isolating concrete from heating equipment, a heat tracing cable 4 for heating the concrete and an electric heat tracing temperature sensor 5 for transmitting a temperature signal to an alternating current out-of-limit alarm isolator 7, the corrugated pipe is a 2cm high-strength corrugated pipe, the alternating current out-of-limit alarm isolator 7 transmits the temperature signal to a temperature controller 8, the temperature controller 8 transmits a control temperature signal to the alternating current out-of-limit alarm isolator 7 to achieve the purpose of controlling the temperature, and a heat tracing cable short circuit monitor 9 gives out a warning to an air protection switch. Fig. 2 shows whether a grouting machine 10 is used for grouting into a grouting duct 11 of the structural terrace through a grouting pipe 12 according to the bearing capacity requirement of the structural terrace.

The heat dissipation temperature of the heat tracing unit is controlled by the temperature controller 8 so as to control the maintenance temperature of the structural terrace. The terrace maintenance temperature is controllable, and the concrete is heated evenly, can prevent that the local temperature difference of structure terrace is too big to the shrink crack that causes such as production temperature stress is too big, the dehydration speed is too fast is too big, local concrete receives the condition such as freeze and takes place. Therefore, the construction speed is effectively improved, and the aim of meeting the construction quality requirement is fulfilled.

The invention also comprises a construction method of the structural terrace heat insulation structure, the length of the corrugated pipe 3 is determined according to the terrace area of the construction flowing water section, and the heat tracing cable 4 and the probe of the electric heat tracing temperature sensor 5 are inserted into the pipe in advance. After the reinforcing steel bars of the floor 2 of the pouring structure are bound, the construction of a heat tracing unit is started, prepared corrugated pipes 3 are bound together at intervals of 20cm by binding wires and bound at the bottoms of the reinforcing steel bars of the upper layer of the floor of the structure, the corrugated pipes 3 are horizontally arranged at a distance of 200cm in parallel, the corrugated pipes 3 cannot be subjected to dead bending and knotting during installation, deviation errors are controlled within 2cm, the outer skins of the corrugated pipes 3 cannot be damaged during installation, the corrugated pipes 3 are checked in advance, and if the corrugated pipes are damaged, the corrugated pipes are wrapped tightly by using adhesive tapes. A heat tracing cable 4 is inserted into each corrugated pipe 3, and the heat tracing cable 4 is of a QTV2-CT type in the embodiment. The resistance value of each heat tracing cable 4 is measured before the heat tracing cables 4 are placed, the heat tracing cables 4 are installed from the power supply connection position, the ends of the heat tracing cables 4 are not connected with electricity and placed at the power supply connection position, and after the integral installation is finished, the nominal resistance and the insulation resistance are checked in a unified mode. And after the whole system is installed, the system is debugged comprehensively, and the normal and safe operation of the system is ensured. First, it is checked that the heat tracing unit and all the fittings are correctly installed and the corrugated tube 3 is intact in appearance. The air protection switches 6 of all circuits are then switched off, each circuit is checked and recorded. Before electrifying, whether a power line is connected or not and whether a heat tracing cable 4 is connected or not are measured, whether an electric heat tracing temperature sensor 5 is normal or not and whether a temperature controller is normally connected or not are checked. Whether the system is started freely or not is checked through testing, and whether the switches and the display lamps of the distribution box 1 work normally or not is checked. And (5) powering on for trial operation, and checking whether the heat tracing cable 4 works normally or not by reducing or increasing the temperature at least three times. After the structure terrace is poured and is accomplished, heat tracing cable 4 begins work, and electric heat tracing temperature sensor 5 settles in the pipeline, can measure the concrete temperature at any time, and temperature controller sets for the temperature in advance at 10 ~ 15, compares through the temperature with electric heat tracing temperature sensor 5 measuring, judges isolator 7 in the heat tracing block terminal 1 in time to cut off/switch on power to reach the terrace concrete and heat up and prevent frostproofing and prevent the purpose that the temperature is too high. After the concrete is cured for seven days, the heat tracing cable 4 and the electric heat tracing temperature sensor 5 are drawn out from the corrugated pipe 3 for recycling, and a grouting pore 11 is formed in the corrugated pipe 3 after the corrugated pipe is drawn out.

As shown in fig. 2, if the bearing capacity of the structural terrace is high, grouting is needed to the grouting tunnels 11. And (3) stirring the grouting material strictly according to a specified mixing ratio and a mixing process, standing for 2 minutes after uniform stirring for exhausting, and detecting the fluidity of the grouting material, wherein the initial fluidity is not less than 300 mm. And grouting into the grouting pore canal 11 one by one or in batches by using a special grouting machine 10, and grouting by adopting a pressure grouting method. The grouting flow rate is controlled by controlling the grouting pressure, all the inlet and outlet holes are not blocked during grouting, when the inlet and outlet holes start to overflow slurry outwards, the overflow surface is full of the inlet and the cross section of the outlet hole is immediately plugged with a rubber plug to block the outlet hole, if the slurry leakage phenomenon occurs, grouting is stopped and the slurry leakage part is processed, after all the outlet holes are completely blocked, the grouting pipe 12 is pulled out, the inlet hole is blocked, the blocking is required to be carried out, the blocking is required to be timely, the phenomenon that the slurry in the grouting cavity is subjected to pressure maintaining overflows the grouting cavity is avoided, and grouting is not solid. The time interval from the pulling of the grouting pipe to the plugging of the rubber plug is not more than 1 s.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.