CN-121992791-A - Underwater membrane bag concrete construction method and system based on solid waste base cementing material

CN121992791ACN 121992791 ACN121992791 ACN 121992791ACN-121992791-A

Abstract

The application relates to the technical field of underwater engineering, in particular to an underwater film bag concrete construction method based on solid waste-based cementing materials, which comprises the steps of inputting water conservancy parameters into an excitant parameter prediction model, determining corresponding excitant parameters to prepare the solid waste-based cementing materials, and obtaining consistency coefficients and flow behavior indexes corresponding to the solid waste-based cementing materials; the method comprises the steps of obtaining stress relaxation time based on water depth, water flow speed, consistency coefficient, flow behavior index and shear modulus, determining basic pouring pressure based on the water depth, the consistency coefficient and the flow behavior index, and preset pouring pipe radius, pouring pipe length and initial pouring rate, obtaining initial pouring pressure based on the stress relaxation time and a preset stress relaxation time threshold, and pouring the membrane bag based on the initial pouring rate and the initial pouring pressure. The strength and stability of the underwater reinforcing structure are enhanced, and carbon emission in the raw material exploitation and production process is reduced.

Inventors

CAO YUMIN
SUN ZHI
GUO SHUCHUN
DENG HUI
WU JUNYU
SONG JUNFU
ZENG GUI
WANG PENG
SUN WEIMIN
ZHOU ZHONGCHEN
LI CONG
KANG ZHI
SUN JINWEI
ZOU GUOXIANG

Assignees

北京城建十六建筑工程有限责任公司

Dates

Publication Date: 20260508
Application Date: 20251230

Claims (10)

1. An underwater membrane bag concrete construction method based on solid waste-based cementing materials is characterized by comprising the following steps: inputting water conservancy parameters of the area to be reinforced into a preset excitant parameter prediction model to determine corresponding excitant parameters, wherein the water conservancy parameters comprise water depth and water flow speed; Preparing a solid waste-based cementing material based on the parameters of the exciting agent, and obtaining a consistency coefficient and a flow behavior index corresponding to the prepared solid waste-based cementing material; Obtaining a viscosity coefficient based on the water depth, the water flow speed, the consistency coefficient, the flow behavior index and a preset power law behavior algorithm, and obtaining stress relaxation time based on the viscosity coefficient and a preset shear modulus; Determining basic pouring pressure based on the water depth, the consistency coefficient, the flow behavior index, the preset pouring pipe radius, the preset pouring pipe length and the preset initial pouring rate, and optimizing the basic pouring pressure based on the stress relaxation time and the preset stress relaxation time threshold value to obtain initial pouring pressure; and pouring the solid waste-based cementing material into a film bag which is deployed in advance in the area to be reinforced based on the initial pouring rate and the initial pouring pressure so as to finish pouring the film bag.
2. The method for constructing the anti-impact reinforced underwater film bag concrete according to claim 1, wherein the parameters of the exciting agent comprise the type of the exciting agent and the doping amount of the exciting agent; Based on the parameters of the exciting agent, preparing the solid waste-based cementing material comprises the following steps: Carrying out magnetic separation treatment on slag based on the magnetic field intensity of 10000-12000 Gs, ensuring that the iron content in the slag is less than or equal to 0.5%, and then carrying out crushing treatment on the slag, and retaining 5-10 mm particles; Classifying the fly ash based on the wind speed of 15-20 m/s, and drying the fly ash after coarse particles with the particle size of more than 45 mu m are removed; Digestion treatment and crushing treatment are carried out on alkaline residues; Mixing slag and fly ash in a mass ratio of (alkali slag=6:2:2), and grinding the mixed raw materials to obtain a solid waste material with a specific surface area of 400-500 m 2 /kg; mixing the solid waste material and the recycled aggregate according to the proportion of 1:5, adding the exciting agent based on the type of the exciting agent and the mixing amount of the exciting agent, and carrying out mixing and stirring configuration to obtain the solid waste-based cementing material.
3. The method for constructing the underwater film bag concrete based on the solid waste-based cementing material according to claim 1, wherein the obtaining of the viscosity coefficient based on the water depth, the water flow speed, the consistency coefficient and the flow behavior index and a preset power law behavior algorithm comprises the following steps: Determining the shear rate of the area to be reinforced based on the water depth and the water flow speed, wherein the shear rate is the product of the ratio of the water flow speed to the water depth and a preset shear rate correction coefficient; The viscosity coefficient is obtained based on the shear rate, the consistency coefficient, the flow behavior index and a preset power law behavior algorithm, wherein the power law behavior algorithm is as follows: ; Wherein, the Is the viscosity coefficient, K is the consistency coefficient, gamma is the shear rate, and n is the flow behavior index.
4. The method for constructing an underwater film bag concrete based on a solid waste-based cementitious material according to claim 1, wherein the obtaining of the stress relaxation time based on the viscosity coefficient and a shear modulus set in advance comprises: Obtaining stress relaxation time based on the viscosity coefficient and a preset shear modulus, wherein the stress relaxation time is the ratio of the viscosity coefficient to the shear modulus; the shear modulus is obtained based on the prepared solid waste-based cement.
5. The method for constructing an underwater film bag concrete based on a solid waste matrix binder according to any one of claims 1 to 4, wherein the determining of the basic casting pressure based on the water depth, the consistency coefficient and the flow behavior index, and the casting tube radius, the casting tube length and the initial casting rate set in advance, comprises: obtaining the hydrostatic pressure corresponding to the region to be reinforced based on the water depth, wherein the hydrostatic pressure is the product of the hydrostatic density, the gravitational acceleration and the water depth of the region to be reinforced; Obtaining material flow resistance based on a consistency coefficient, a flow behavior index, a preset pouring pipe radius, a preset pouring pipe length and an initial pouring rate; And obtaining basic pouring pressure based on the hydrostatic pressure, the material flow resistance, the preset membrane bag constraint resistance and the preset safety coefficient, wherein the basic pouring pressure is the product of the sum of the hydrostatic pressure, the material flow resistance and the membrane bag constraint resistance and the safety coefficient.
6. The method for constructing an underwater film bag concrete based on a solid waste-based cementing material according to claim 5, wherein the material flow resistance is obtained based on a consistency coefficient and a flow behavior index, and a casting pipe radius, a casting pipe length and an initial casting rate which are set in advance, comprising: Obtaining material flow resistance based on a consistency coefficient, a flow behavior index, a casting pipe radius, a casting pipe length, an initial casting rate and a preset material flow resistance prediction algorithm, wherein the material flow resistance prediction algorithm comprises the following steps: ; wherein K is a consistency coefficient, n is a flow behavior index, R is a casting pipe radius, L is a casting pipe length, and Q is an initial casting rate.
7. The method for constructing an underwater film bag concrete based on a solid waste-based cementing material according to claim 5, wherein the film bag constraint resistance is determined based on the following steps: The method comprises the steps of obtaining film bag parameters of a film bag which is pre-deployed in a region to be reinforced, wherein the film bag parameters comprise film bag elastic modulus, film bag deformation limit, film bag thickness and film bag equivalent constraint width; Determining the maximum allowable elastic stress of the membrane bag based on the membrane bag elastic modulus and the membrane bag deformation limit, wherein the maximum allowable elastic stress of the membrane bag is the product of the membrane bag elastic modulus and the membrane bag deformation limit; And obtaining the membrane bag constraint resistance according to the maximum allowable elastic stress, the membrane bag thickness, the membrane bag equivalent constraint width and a preset constraint resistance empirical coefficient, wherein the membrane bag constraint resistance is the product of the maximum allowable elastic stress and the membrane bag thickness, the ratio of the maximum allowable elastic stress to the membrane bag thickness to the membrane bag equivalent constraint width and the product of the membrane bag constraint resistance empirical coefficient.
8. The method for constructing the underwater film bag concrete based on the solid waste-based cementing material according to claim 1, wherein the method for optimizing the basic pouring pressure based on the stress relaxation time and the preset stress relaxation time threshold value to obtain the initial pouring pressure comprises the following steps: When the stress relaxation time is determined to be smaller than a preset stress relaxation time threshold value, a pouring pressure adjustment coefficient is obtained based on the stress relaxation time, the preset stress relaxation time threshold value and a preset formula I, wherein the formula I is as follows: ; Wherein k p is a pouring pressure adjustment coefficient, As the stress relaxation time threshold value, Is stress relaxation time; And optimizing the foundation pouring pressure based on the pouring pressure adjustment coefficient to obtain initial pouring pressure, wherein the initial pouring pressure is the product of the pouring pressure adjustment coefficient and the foundation pouring pressure.
9. The method for constructing an underwater diaphragm bag concrete based on a solid waste-based cementing material according to claim 1, wherein the solid waste-based cementing material is poured into a diaphragm bag pre-deployed in an area to be reinforced based on an initial pouring rate and an initial pouring pressure, so as to complete pouring of the diaphragm bag, comprising: Pouring the solid waste-based cementing material into a film bag which is deployed in advance in a region to be reinforced based on a preset initial pouring rate and initial pouring pressure; in the pouring process, corresponding film bag parameters are monitored in real time, and the pouring parameters are adjusted in real time based on the film bag parameters so as to finish pouring of the film bag, wherein the pouring parameters comprise real-time pouring rate and real-time pouring pressure; After pouring is completed, the rebound value of the surface of the film bag is collected based on the underwater rebound device, the compressive strength of the surface of the film bag is determined, and whether grouting operation is performed through the pre-set filling holes on the surface of the film bag or not is determined according to the compressive strength.
10. An underwater film bag concrete construction system based on solid waste based cementing materials, comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to realize the underwater film bag concrete construction method based on solid waste based cementing materials as set forth in any one of claims 1 to 9.

Description

Underwater membrane bag concrete construction method and system based on solid waste base cementing material Technical Field The application relates to the technical field of underwater engineering, in particular to an underwater film bag concrete construction method and system based on solid waste base cementing materials. Background With the rapid development of water conservancy, harbors, waterways and ocean engineering in China, underwater structures (such as dykes, piers, shore protection, submarine pipelines and the like) are subjected to water flow scouring, wave impact and sediment erosion for a long time, so that the safety problems of foundation hollowing, structure instability, collapse and the like are very easy to occur. In order to improve the anti-scouring capability and the overall stability of the underwater structure, an underwater reinforcement technology becomes one of key means for guaranteeing the safe operation of an infrastructure. At present, underwater anti-impact reinforcement is usually carried out by methods such as stone throwing, concrete blocks, geotextile bag sand or traditional underwater concrete. However, these methods generally have problems of large material self-weight, low construction precision, large environmental disturbance, poor adhesion with a substrate, and the like. In recent years, the underwater film bag concrete technology is becoming an important development direction of underwater reinforcement due to good fluidity, self-compaction and adaptability to irregular terrains. According to the technology, pumpable concrete slurry is injected into a flexible membrane bag laid in advance under water, dense filling is realized by means of slurry self-leveling characteristics, and a continuous and high-integrity protective layer is formed. However, the traditional underwater film bag concrete is mostly dependent on common silicate cement-based materials, has the problems of high raw material consumption, carbon emission amplification, high hydration heat, slow development of early strength and the like, and is difficult to meet the engineering requirements of green low carbon and sustainable development (refer to the requirements of low carbon building materials in GB/T50108-2018 waterproof technical Specification of underground engineering). In addition, the underwater pouring process is obviously influenced by hydraulic conditions such as water depth, water flow speed and the like, the slurry dilution can be accelerated by water flow disturbance, the effective stacking height is reduced, and the pumping pressure and the membrane bag filling integrity are more highly required by water pressure. The existing construction method mostly adopts empirical parameters to set pouring pressure and pouring speed, and lacks quantitative analysis on the coupling effect of rheological property of materials and hydrologic environment, so that uneven filling, bulge cracking or insufficient grouting of the film bags are easily caused, and the reinforcement effect is influenced. Disclosure of Invention First, the technical problem to be solved In view of the above-mentioned shortcomings and disadvantages of the prior art, the application provides an underwater membrane bag concrete construction method and system based on solid waste based cementing materials, which solves the technical problems that the traditional underwater membrane bag concrete depends on common silicate cement based materials, and has high raw material consumption, high carbon emission amplification, high hydration heat and slow early strength development, and the existing construction mode generally adopts empirical parameters to set pouring pressure and rate, lacks quantitative analysis on the coupling effect of material rheological property and hydrologic environment, and is easy to cause uneven membrane bag filling, bulge cracking or insufficient grouting, and influences the reinforcing effect. (II) technical scheme In order to achieve the above purpose, the main technical scheme adopted by the application comprises the following steps: in a first aspect, an embodiment of the present application provides a method for constructing an underwater film bag concrete based on a solid waste-based cementing material, including: inputting water conservancy parameters of the area to be reinforced into a preset excitant parameter prediction model to determine corresponding excitant parameters, wherein the water conservancy parameters comprise water depth and water flow speed; Preparing a solid waste-based cementing material based on the parameters of the exciting agent, and obtaining a consistency coefficient and a flow behavior index corresponding to the prepared solid waste-based cementing material; Obtaining a viscosity coefficient based on the water depth, the water flow speed, the consistency coefficient, the flow behavior index and a preset power law behavior algorithm, and obtaining stress relaxation time base