Real-time monitoring system and method for key grouting parameters after large-diameter cast-in-place pile combination

Abstract

The invention discloses a real-time monitoring system and method for key grouting parameters after large-diameter cast-in-place pile combination. The system comprises a reinforcement cage, a pile side ring pipe grouting device, a pile end inverted-T-shaped grouting device, an electromagnetic flowmeter, a pressure sensor and a check valve. Controllable grouting under the low-pressure working condition is achieved through the check valve, and key grouting parameters at the grout outlet are monitored in real time through the electromagnetic flowmeter and the pressure sensor so that dynamic grouting parameter adjustment can be conducted according to the actual working condition. According to the method, the problems that the grouting parameters of the large-diameter cast-in-place pile are difficult to accurately determine in real time and are interfered by human factors can be effectively solved; grouting parameters at a grout outlet are accurately monitored and dynamically adjusted, so that the grouting reliability is guaranteed; real-time data are recorded and uploaded, standard test data are accumulated by means of informatization, and large data analysis can be conveniently conducted on grouting parameters in the grouting project in the follow-up process.

Description

technical field [0001] The invention relates to the technical field of pile foundation grouting process, in particular to a real-time monitoring system and method for key parameters of grouting after large-diameter grouting piles are combined. Background technique [0002] Post-pile grouting technology is an engineering technology with strong practicability and a wide range of applications. It has been widely used in various fields such as underground buildings, bridges, subways, tunnels, transmission tower foundations, and offshore wind power. Improve the strength and stiffness of the soil, improve its stability and bearing capacity. At present, the domestic cast-in-situ piles adopt the post-grouting technology mainly to improve the defects of the construction process, increase the bearing capacity of the pile foundation, reduce the settlement, and then optimize the design of the pile length and save the project cost. Since the post-grouting project is a concealed project,...

AI Technical Summary

Problems solved by technology

However, due to the presence of stones in the concrete and sediment during the grouting process, the outer rubber ring will be scratched, resulting in the failure of the check, allowing the grout to enter the conventional grouting head and block the grouting pipe

In addition, since it is necessary to use clean water to unplug the grout outlet under high pressure before grouting, this not only adds one more process, increases the construction cost, but also destroys the strength of the soil near the grout outlet, and is harmful to the pile body that has just been poured. Concrete can also be damaged

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