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Heating and heat preservation system, heat preservation method and construction method for winter construction pouring formwork

A technology of heating and heat preservation and temperature control system, which is applied in the field of bridge engineering, can solve the problems of unfavorable temperature control, no temperature control system, poor applicability, etc., and achieves the effects of good stability, good safety, and reduction of hidden quality risks.

Pending Publication Date: 2020-10-30
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is simple and convenient, but the template needs to be customized, the applicability is not good, and there is no temperature control system, which is not conducive to temperature control

Method used

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  • Heating and heat preservation system, heat preservation method and construction method for winter construction pouring formwork
  • Heating and heat preservation system, heat preservation method and construction method for winter construction pouring formwork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 1-2 As shown, a heating and heat preservation system for pouring formwork in winter, including a heating layer, the heating layer is arranged on the outside of the formwork 1, the heating layer includes several heating wires 2, the outside of the formwork 1 is provided with a temperature sensor 3, the temperature There is at least one inductor 3, and a thermal insulation layer 4 is arranged outside the heating layer. The temperature control system 5 is connected with the heating wire 2 of the heating layer and the temperature sensor 3 through a wire 6 for controlling the heating and thermal insulation system.

[0041] Such as figure 1 As shown, the pouring formwork is the formwork 1 on the support of the continuous beam hanging basket method. The formwork 1 includes a bottom formwork 11, a side formwork 12 and a center formwork 13. Heating and heat preservation is provided on the side of each formwork 1 away from the pouring structure. system, the heati...

Embodiment 2

[0043] This embodiment shows a method for heat preservation of pouring formwork in winter construction, and the temperature of the formwork is controlled at 5-30°C. Before concrete pouring, the heating and heat preservation system of the pouring formwork can be turned on 1-3 hours in advance. According to the requirements of the project, the preset temperature of the formwork 1 is set on the temperature display of the temperature control system 5. After the preset temperature is set, the formwork is heated The heating wire 2 of the layer will generate heat and heat the template 1, and the temperature sensor will detect the measured temperature of the template 1 in real time, and the measured temperature will also be displayed on the temperature display, and then the detection signal will be fed back to the temperature controller of the temperature control system 5 In the process, the temperature controller makes the output and disconnection of the power supply according to the ...

Embodiment 3

[0046] This embodiment is the construction method of pouring formwork winter construction heating and heat preservation system in embodiment 1. The resistance of the carbon fiber heating wire is 33Ω / M, the diameter is 2mm, and the heat preservation material is rock wool heat preservation material. The construction method includes the following steps:

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Abstract

The invention discloses a heating and heat preservation system, a heat preservation method and a construction method for a winter construction pouring formwork. The heating and heat preservation system comprises a heating layer, a temperature sensor, a heat preservation layer and a temperature control system. The heating layer is arranged on the outer side of the formwork and used for heating andheat preservation of the formwork, the heating layer comprises a plurality of heating wires, the temperature sensor is arranged on the outer side of the formwork, the heat preservation layer wraps theheating layer, and the heating layer and the temperature sensor are connected with the temperature control system through wires. According to the heating and heat preservation system, the pouring formwork is heated in an electric heating mode, the formwork temperature from concrete pouring into the formwork to the time before formwork removal is effectively controlled, temperature control is accurate, the overall system applicability is high, the heating and heat preservation system can be applied to all pouring formworks, especially steel formworks, the construction structure is simple, andthe workload of constructors is greatly reduced.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a heating and heat preservation system, heat preservation method and construction method for pouring formwork in winter construction. Background technique [0002] In the construction of bridge projects, when entering winter construction, the temperature is below 5°C, and even drops to below zero. Most areas in northern my country often face this low temperature climate. Low temperature has a great impact on the quality of the project. Due to the winter temperature Extremely low, during concrete pouring construction, the hydration of cement is hindered during the low-temperature condensation process of concrete, which affects the growth of concrete strength, may cause serious cracks in concrete, and affect the quality of concrete. In bridge construction, in order to ensure that the concrete can still reach the design strength under severe cold conditions, in the construction proc...

Claims

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Application Information

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IPC IPC(8): E01D21/00E04G9/10C04B40/00H05B3/36E01D101/24
CPCC04B40/0082E01D21/00E01D2101/24E04G9/10H05B3/36
Inventor 刘夏辜文凯冯永辉王宇张泽斌姚永章
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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