CN214194466U - Reserved grouting hole structure for foundation treatment of embedded large-scale vibration equipment - Google Patents
Reserved grouting hole structure for foundation treatment of embedded large-scale vibration equipment Download PDFInfo
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- CN214194466U CN214194466U CN202022477558.2U CN202022477558U CN214194466U CN 214194466 U CN214194466 U CN 214194466U CN 202022477558 U CN202022477558 U CN 202022477558U CN 214194466 U CN214194466 U CN 214194466U
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Abstract
The utility model discloses a reserved grouting hole structure for foundation treatment of an embedded large-scale vibration equipment, which comprises a plurality of grouting holes 1 distributed in a foundation and a concrete layer poured above the foundation, wherein each grouting hole 1 is correspondingly provided with a reserved pipe; the reserved pipes are installed in parallel to form a plurality of sets of grouting pipelines, and each set of grouting pipeline is led out of the ground along a structure joint reserved in the concrete layer, so that multiple grouting reinforcement of the foundation is realized. The utility model realizes repeated grouting during the operation of the equipment by reserving the grouting channel in the construction process, thereby improving the safety performance of the equipment; the method overcomes the limitation of the prior engineering field to the foundation treatment, and has important value to the engineering safety of the embedded large-scale vibration equipment.
Description
Technical Field
The utility model relates to a ground treatment technical field especially relates to a reserve grout hole structure for large-scale vibrating equipment ground of embedded type is handled.
Background
The embedded large-scale vibration equipment belongs to special equipment, is mostly arranged in laboratories for scientific research, such as large-scale vibration test beds, large-scale centrifuge laboratories and the like, has high manufacturing cost and has great strategic position in scientific research. However, from the construction perspective, the related engineering experience is lacked at home and abroad, most of large-scale vibration equipment even exceeds the application range of related specifications, so that although various extreme working conditions are considered in the design process, the destructiveness of the foundation of the embedded large-scale vibration equipment caused by the extreme working conditions is difficult to predict.
The embedded large-scale vibration equipment generally selects harder soil layers or rock stratums as bearing layers, and simultaneously adopts some foundation treatment means to enhance the strength of the foundation, for the soil layers with higher hardness, the more common foundation treatment methods comprise the following steps: vibroflotation, cement-soil stirring, grouting, prepressing and the like. The grouting method is the most common method for reinforcing hard soil layer or rock stratum, and is characterized by that it utilizes the air pressure or hydraulic pressure and filling permeation and compacting modes to uniformly inject the slurry capable of solidifying into the rock-soil layer, and can remove water and gas between fire-soil particles in rock crack, and can fill the slurry with the slurry, after the slurry is hardened, the rock-soil can be cemented into a whole body, so that the stress state and load-transferring property of bearing layer can be improved, and the ground can be reinforced, and the permeation or non-uniform settlement can be prevented or reduced.
The particularity of the large-scale vibration equipment is that the rock and soil mass around the large-scale vibration equipment is under the action of vibration load for a long time, the vibration load does not influence the strength of soil, but under some extreme working conditions, such as earthquake and vibration equipment, failure occurs to generate impact load, and when two dynamic loads are superposed, superposition effects can be generated to cause the attenuation of the foundation strength. For example, the sand is liquefied by earthquake load, the sand body is changed into a flow plastic or semi-flow plastic state, the shear strength is basically lost, and the porosity of the sand is possibly reduced continuously under the influence of long-term vibration load, so that the sand body cannot finish the consolidation process, and the liquefaction of the soil body is aggravated. The huge impact load may cause the stress of a part of soil body to exceed the limit shear strength, so that the soil body enters a plastic stage, and the soil body entering the plastic stage may generate larger deformation under the action of long-term vibration load, so that the stability and the safety of the vibration equipment are threatened. Although the occurrence of these conditions should be considered in the design process of the embedded vibration equipment, it is still necessary to prevent the dynamic load superposition from being underestimated, and once the two conditions occur, the foundation is reinforced for two or more times, so as to strengthen the strength of the foundation rock mass and further enhance the safety of the structure, which is a feasible solution.
Based on the circumstances, the utility model provides a reserve grout hole structure for large-scale vibrating equipment ground of embedded is handled can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
To the not enough of existence among the prior art, the utility model aims to provide a reserve grout hole structure for large-scale vibrating equipment ground of embedded is handled. Can realize ground grout reinforcement many times for protect large-scale vibrating equipment, compensate the not enough among the prior art.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a reserved grouting hole structure for foundation treatment of embedded large-scale vibration equipment comprises a plurality of grouting holes distributed in a foundation and a concrete layer poured above the foundation, wherein each grouting hole is correspondingly provided with a reserved pipe; the reserved pipes are installed in parallel to form a plurality of sets of grouting pipelines, and each set of grouting pipeline is led out of the ground along a structure joint reserved in the concrete layer, so that multiple grouting reinforcement of the foundation is realized.
Preferably, each set of grouting pipeline comprises a main grout inlet pipe and a main grout return pipe, each grouting hole is provided with a grout inlet branch pipe and a grout return branch pipe, and the orifice ends of the grout inlet branch pipe and the grout return branch pipe are respectively connected with the main grout inlet pipe and the main grout return pipe through a tee joint.
More preferably, the distance between the slurry inlet branch pipe in the grouting hole and the hole bottom is not more than 50cm, and the distance between the slurry return branch pipe and the hole opening is not more than 20 cm.
More preferably, 20% of reserved pipes are added on the basis of original drilling holes when pipelines are arranged, and one reserved pipe is additionally arranged every 4 drilling holes.
Preferably, the structural joint comprises a transverse structural joint and a vertical structural joint which are perpendicular to each other, and the grouting holes are respectively arranged on two sides of the transverse structural joint and one side or two sides of the vertical structural joint.
Preferably, the length of the reserved pipe led out of the top surface of the concrete layer is not less than 10 cm.
More preferably, a slurry stop valve and a pressure gauge are arranged at the top end of the reserved pipe.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model provides a grouting hole structure is reserved to large-scale vibrating equipment of formula of burying through reserving the grout passageway in the work progress, realizes the repeated grout during equipment operation, improve equipment security performance. The method overcomes the limitation of the prior engineering field to the foundation treatment, and has important value to the engineering safety of the embedded large-scale vibration equipment.
Drawings
FIG. 1 is a schematic plan view of the present invention illustrating the grouting holes;
FIG. 2 is a schematic view of the sectional layout of the reserved grouting holes of the present invention;
FIG. 3 is a schematic layout of the grouting pipeline of the present invention;
fig. 4 is a schematic structural view of the joint of the main slurry inlet and return pipe and the slurry inlet and return branch pipe of the present invention.
Reference numerals: 1-grouting hole, 2-vertical structure seam, 3-horizontal structure seam, 4-main grout inlet pipe, 5-main grout return pipe, 6-grout inlet branch pipe, 7-grout return branch pipe, 8-grout stop valve and 9-pressure gauge.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The utility model provides a reserved grouting hole structure for foundation treatment of an embedded large-scale vibration equipment, which comprises a plurality of grouting holes 1 distributed in a foundation and a concrete layer poured above the foundation, wherein each grouting hole 1 is correspondingly provided with a reserved pipe; the reserved pipes are installed in parallel to form a plurality of sets of grouting pipelines, and each set of grouting pipeline is led out of the ground along a structure joint reserved in the concrete layer, so that multiple grouting reinforcement of the foundation is realized.
As shown in fig. 3 and 4, each set of grouting pipeline comprises a main grout inlet pipe and a main grout return pipe, each grouting hole is provided with a grout inlet branch pipe and a grout return branch pipe, the orifice ends of the grout inlet branch pipe and the grout return branch pipe are respectively connected with the main grout inlet pipe and the main grout return pipe through a tee joint, and stainless steel sleeve heads are installed at pipe orifices of the joints, so that butt joint installation is facilitated. The distance between the slurry inlet branch pipe 6 and the bottom of the hole is not more than 50cm, and the distance between the slurry return branch pipe 7 and the hole opening is not more than 20 cm. The main slurry inlet pipe 4 and the main slurry return pipe 5 are restrained by a connector. Because the pipeline is difficult to remedy when not in communication, 20% of reserved pipes are additionally arranged on the basis of the original drilling holes when the pipeline is arranged, and one reserved pipe is additionally arranged every 4 drilling holes.
As shown in fig. 1, the structural joint includes a horizontal structural joint and a vertical structural joint which are perpendicular to each other, the reserved pipes are reasonably arranged according to the position relationship between the grouting holes and the horizontal structural joint, the first arrangement scheme is that five grouting holes are arranged on one side of the vertical structural joint, the second arrangement scheme is that five grouting holes are arranged on two sides of the vertical structural joint, and the third arrangement scheme is that five grouting holes are arranged on two sides of the horizontal structural joint.
As shown in figure 2, the length of the reserved pipe led out of the top surface of the concrete layer is not less than 10cm, and a grout stop valve and a pressure gauge are installed at the top end of the reserved pipe.
The embodiment also provides a construction method for reserving the grouting hole by the embedded large-scale vibration equipment, which specifically comprises the following steps:
after the foundation pit is excavated, performing primary foundation grouting treatment, drilling a grouting hole 1 in a foundation rock-soil body, flushing the hole wall through high-pressure water, flushing sediments in the hole completely, performing full-hole grouting to ensure that the strength of the foundation meets the requirement of equipment installation, and injecting clear water into a guide pipe to keep the guide pipe communicated after grouting is finished;
when the first-layer concrete slab of the equipment is poured, arranging reserved pipes at the transverse structural joint 2 and the vertical structural joint 3, arranging the reserved pipes according to the existing grouting hole 1, installing a set of grouting pipelines in parallel by five reserved pipes, and reasonably arranging the reserved pipes according to the position relation of the grouting hole 1 and the transverse and vertical structural joints;
after the arrangement of the reserved pipes is finished, checking the smoothness of the pipelines, introducing water from the main slurry inlet pipe 4, controlling the water introduction pressure to be not more than 0.5Mpa, and properly pressurizing and dredging the pipelines without backwater, but not more than 0.8 Mpa;
in the process of equipment installation and pouring, leading the reserved pipe out of the ground along the arrangement seam, and performing pipeline smoothness inspection once when the installation elevation rises by 10 m;
after the top of the structure is poured, leading the reserved pipe out of the top surface of the structure by not less than 10cm, and installing a grout stop valve 8 and a pressure gauge 9 at the end part;
the settlement observation laser level is arranged in a closed level route, and the front and the back of the observation route are consistent; in the equipment installation pouring process, 5m settlement observation is carried out every time when construction is completed, the settlement observation is carried out every 2 months after the equipment installation is completed, the settlement observation is carried out every quarter in the second year, the laser level is adopted, the closed level route is arranged, and the observation route is consistent.
According to the settlement observation result, when the settlement difference of adjacent observation points exceeds 3mm, a grouting scheme needs to be established immediately; grouting simultaneously at each grouting point during grouting, distributing grouting amount according to the settlement value of each measuring point by regions according to proportion, wherein for the region with the settlement difference of the adjacent observation points exceeding 3mm, the grouting amount of the region with the large settlement value is at least more than 1.5 times of the average value of the grouting amount; when grouting is repeated, opening a grout stop valve at the outer leakage side of the reserved pipe, and grouting by using a cement slurry material; and injecting the fly ash slurry into the reserved pipe after grouting is finished, and repeatedly flushing the reserved pipe and the grouting pipeline in the dam by using clear water after cement slurry is finally set to ensure that a grouting channel is smooth.
The utility model provides a grouting hole structure is reserved to large-scale vibrating equipment of formula of burying through reserving the grout passageway in the work progress, realizes the repeated grout during equipment operation, improve equipment security performance. The method overcomes the limitation of the prior engineering field to the foundation treatment, and has important value to the engineering safety of the embedded large-scale vibration equipment.
According to the utility model discloses a description and attached drawing, the technical personnel in the field make or use very easily the utility model discloses a reserve grout hole structure for large-scale vibrating equipment ground of formula of burying is handled to can produce the positive effect that the utility model discloses record.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to specific situations by referring to the drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (7)
1. A reserve grout hole structure for large-scale vibrating equipment ground of embedded type handles, its characterized in that: the grouting device comprises a plurality of grouting holes distributed in a foundation and a concrete layer poured above the foundation, wherein each grouting hole is correspondingly provided with a reserved pipe; the reserved pipes are installed in parallel to form a plurality of sets of grouting pipelines, and each set of grouting pipeline is led out of the ground along a structure joint reserved in the concrete layer, so that multiple grouting reinforcement of the foundation is realized.
2. The reserved grouting hole structure for foundation treatment of the embedded large-scale vibration equipment according to claim 1, characterized in that: each set of grouting pipeline comprises a main grout inlet pipe and a main grout return pipe, each grouting hole is provided with a grout inlet branch pipe and a grout return branch pipe, and the orifice ends of the grout inlet branch pipe and the grout return branch pipe are respectively connected with the main grout inlet pipe and the main grout return pipe.
3. The reserved grouting hole structure for foundation treatment of the embedded large-scale vibration equipment as claimed in claim 2, wherein: the distance between the grout inlet branch pipe in the grouting hole and the bottom of the hole is not more than 50cm, and the distance between the grout return branch pipe and the orifice is not more than 20 cm.
4. The reserved grouting hole structure for foundation treatment of the embedded large-scale vibration equipment as claimed in claim 2, wherein: when the pipeline is arranged, 20% of reserved pipes are additionally arranged on the basis of the original drilling holes, and one reserved pipe is additionally arranged every 4 drilling holes.
5. The reserved grouting hole structure for foundation treatment of the embedded large-scale vibration equipment according to claim 1, characterized in that: the structural joint comprises a transverse structural joint and a vertical structural joint which are perpendicular to each other, and the grouting holes are respectively arranged on two sides of the transverse structural joint and one side or two sides of the vertical structural joint.
6. The reserved grouting hole structure for foundation treatment of the embedded large-scale vibration equipment according to claim 1, characterized in that: the length of the reserved pipe led out of the top surface of the concrete layer is not less than 10 cm.
7. The reserved grouting hole structure for foundation treatment of the embedded large-scale vibration equipment as claimed in claim 6, wherein: and a grout stop valve and a pressure gauge are arranged at the top end of the reserved pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022477558.2U CN214194466U (en) | 2020-10-30 | 2020-10-30 | Reserved grouting hole structure for foundation treatment of embedded large-scale vibration equipment |
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| CN202022477558.2U CN214194466U (en) | 2020-10-30 | 2020-10-30 | Reserved grouting hole structure for foundation treatment of embedded large-scale vibration equipment |
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| CN214194466U true CN214194466U (en) | 2021-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439034A (en) * | 2020-10-30 | 2022-05-06 | 中国电建集团华东勘测设计研究院有限公司 | Reserved grouting hole construction method for foundation treatment of embedded large-scale vibration equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114439034A (en) * | 2020-10-30 | 2022-05-06 | 中国电建集团华东勘测设计研究院有限公司 | Reserved grouting hole construction method for foundation treatment of embedded large-scale vibration equipment |
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