CN112726563A - Multiple door type foundation grouting structure for vibration reduction of track upper cover property and construction method thereof - Google Patents
Multiple door type foundation grouting structure for vibration reduction of track upper cover property and construction method thereof Download PDFInfo
- Publication number
- CN112726563A CN112726563A CN202011465508.0A CN202011465508A CN112726563A CN 112726563 A CN112726563 A CN 112726563A CN 202011465508 A CN202011465508 A CN 202011465508A CN 112726563 A CN112726563 A CN 112726563A
- Authority
- CN
- China
- Prior art keywords
- grouting
- layer
- gate
- upper cover
- cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Hydrology & Water Resources (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a multiple door type foundation grouting structure for vibration reduction of track upper cover property and a construction method thereof, and is characterized in that a plurality of layers of door type grouting layers which are sequentially nested are arranged on the periphery of an existing tunnel and below an upper cover building foundation, each door type grouting layer is a door type grouting layer I, a door type grouting layer II and a door type grouting layer III which are sequentially arranged from inside to outside and are arranged at equal intervals, and the water-cement ratio of each door type grouting layer is 0.5: 1. 0.7: 1 and 1: 1, the volume ratio of cement paste to water glass paste is 1: 1.1, 1: 0.5 and 1: 0.5, the construction method comprises the step of determining the number of gate-shaped grouting layers and grouting parameters according to the predicted frequency band number and the numerical value, and has the advantages that a grouting energy consumption area and multiple elastic wave reflection surfaces are formed in a foundation soil body, so that the capacity energy consumption of vehicle-induced vibration in the propagation process is increased, the vibration generated by the running of a train is effectively controlled, and the effect of reducing the vibration of the upper cover property building is achieved.
Description
Technical Field
The invention relates to the field of vibration reduction of building foundations, in particular to a multiple door type foundation grouting structure for vibration reduction of property of an upper cover of a track and a construction method thereof.
Background
With the continuous development of economy in China, rail transit becomes an important component in urban transportation, and the position of rail transit in transportation is particularly important. Under the situation of increasingly scarce land resources, it is a trend to develop and utilize block property above the rail transit line. At present, the existing buildings for subway underpass and the co-construction engineering and related research of the subway and the buildings are more, but the engineering reports and related research for property development above the existing rail transit tunnel are less. Moreover, the property development is carried out above the existing rail transit tunnel, and the vibration caused by the train operation inevitably affects the upper building, so how to carry out the vibration reduction work is a problem which needs to be researched.
Disclosure of Invention
The invention aims to provide a multiple door type foundation grouting structure for vibration reduction of track upper cover property and a construction method thereof, which can effectively control vibration generated by train operation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a multiple door type foundation grouting structure for vibration reduction of track upper cover property is provided with a plurality of layers of door type grouting layers which are sequentially nested, wherein the door type grouting layers are arranged on the periphery of an existing tunnel and below an upper cover building foundation.
The gate-type grouting layer is a gate-type grouting layer I, a gate-type grouting layer II and a gate-type grouting layer III which are sequentially arranged from inside to outside and are arranged at equal intervals.
The gate-shaped grouting layer I is characterized in that the water cement ratio is 0.5: 1, the volume ratio of cement paste to water glass paste is 1: 1.1; the gate-shaped grouting layer II adopts a water cement ratio of 0.7: 1, the volume ratio of cement paste to water glass paste is 1: 0.5; and the gate-shaped grouting layer III is formed by mixing a cement mixture with a cement-water ratio of 1: 1, the volume ratio of cement paste to water glass paste is 1: 0.5. the use of different proportions can cut off a section of waves, such as 50Hz-80Hz, and the use of different water-cement ratios can lead to different rigidity of each grouting layer, so that the grouting material can filter a frequency band instead of waves with specific frequencies. Through changing slip casting parameter and changing door type slip casting layer I, door type slip casting layer II, III properties on door type slip casting layer for form the elastic wave plane of reflection between different media, through multiple elastic wave plane of reflection, further increase the quantity of elastic wave plane of reflection, and then increase the propagation path of elastic wave.
A construction method of a multiple door type foundation grouting structure for vibration reduction of track upper cover property comprises the following steps:
(1) forecasting a vehicle-induced vibration frequency response curve through Plaxis or Abaqus commercial finite element software, and determining a frequency band in which vehicle-induced vibration energy is mainly concentrated in the upper cover property tunnel section;
(2) determining the number of the gate-shaped grouting layers to be three according to the number of the frequency bands and the numerical value in the prediction result, wherein the water-cement ratio of the gate-shaped grouting layer I is 0.5: 1, the volume ratio of cement paste to water glass paste is 1: 1.1; the gate-shaped grouting layer II adopts a water cement ratio of 0.7: 1, the volume ratio of cement paste to water glass paste is 1: 0.5; and the gate-shaped grouting layer III adopts a water cement ratio of 1: 1, the volume ratio of cement paste to water glass paste is 1: 0.5;
(3) determining the specific spatial relationship between the upper cover property and the lower subway tunnel, arranging multiple door-shaped grouting layers on two sides of the tunnel, constructing layer by layer from inside to outside, and symmetrically grouting on two sides and the top when constructing each grouting layer, wherein the top is constructed from two sides to the middle to construct the upper cover building.
The concrete construction steps of the multiple gate-shaped grouting layer grouting are as follows:
(1) determining the hole site: determining the position of grouting holes according to the actual engineering requirements, and retesting, wherein the grouting holes are arranged in a quincunx manner, the longitudinal distance between the holes is 5m, and the row distance is 5 m;
(2) drilling: after the grouting hole position is calibrated, moving a drilling machine to a drilling position, drilling to a certain depth, adopting a sleeve to protect the wall, pulling out the drilling machine after drilling to a designed position, checking whether impurities exist in the drilling hole, if so, removing the impurities by using a corresponding method, and then adding a hole cover on the hole opening to prevent the impurities from entering;
(3) preparation work: determining grouting pressure and grouting quantity parameters through calculation, and mixing grouting slurry;
(4) the construction sequence is as follows: multiple door-shaped grouting layers are constructed layer by layer from inside to outside, when each layer of grouting layer is constructed, the two sides are firstly and then the top is symmetrically grouted, and the top is from the two sides to the middle;
(5) grouting: and (3) placing a grouting pipe at the drilling position, debugging a grouting machine firstly, performing on-site pre-grouting for 15 minutes, performing grouting construction after no problem exists, and cleaning the grouting pipe during grouting to prevent congestion, wherein the grouting time interval of each grouting layer is 1 hour.
Compared with the prior art, the invention has the advantages that: the invention discloses a multiple door type foundation grouting structure for vibration reduction of a track upper cover property and a construction method thereof, and aims to reduce the influence of vibration generated by the operation of an existing track traffic tunnel train on the upper cover property. On one hand, through multiple grouting energy consumption areas, the properties of the gate-shaped grouting layer are changed through grouting parameters, the dissipation of specific frequency waves in the grouting layer is increased, and the filtering of elastic waves in different frequency bands is realized. On the other hand, the elastic wave is repeatedly reflected and refracted between the foundation soil body and the grouting layer through the multiple elastic wave reflecting surfaces, namely the scattering surfaces generated by utilizing the property difference between the grouting layer and the foundation soil body, the propagation path of the elastic wave is increased, the energy of the elastic wave is further dissipated, and the vibration response of the surrounding soil body is further reduced, so that the upper cover building can meet the corresponding vibration standard requirement.
In summary, the multiple gate type foundation grouting structure for vibration reduction of the track upper cover property and the construction method thereof form a grouting energy consumption area and multiple elastic wave reflection surfaces in a foundation soil body through the multiple gate type grouting layer structure, so that the capacity energy consumption of vehicle-induced vibration in the transmission process is increased, and the vibration reduction effect of the upper cover property building is achieved.
Drawings
Fig. 1 is a schematic view of a multiple door type foundation grouting structure for vibration reduction of track upper cover property, wherein the marks are as follows: 1-gate type grouting layer I; 2-gate type grouting layer II; 3-gate type grouting layer III; 4-elastic wave reflecting surface; 5-existing tunnel; 6, covering the building foundation.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Detailed description of the preferred embodiment
A multiple door type foundation grouting structure for vibration reduction of track upper cover property is disclosed, as shown in figure 1, a plurality of layers of door type grouting layers which are sequentially nested are arranged on the periphery of an existing tunnel 5 and below an upper cover building foundation 6.
In this embodiment, as shown in fig. 1, the gate-type grouting layer is a gate-type grouting layer i 1, a gate-type grouting layer ii 2 and a gate-type grouting layer iii 3 which are arranged in sequence from inside to outside and are arranged at equal intervals. The gate-shaped grouting layer I1 adopts a water cement ratio of 0.5: 1, the volume ratio of cement paste to water glass paste is 1: 1.1; the gate-shaped grouting layer II 2 adopts a water cement ratio of 0.7: 1, the volume ratio of cement paste to water glass paste is 1: 0.5; the gate-shaped grouting layer III 3 adopts a water cement ratio of 1: 1, the volume ratio of cement paste to water glass paste is 1: 0.5. through changing slip casting parameter and changing door type slip casting I1, door type slip casting II 2, III 3 nature on door type slip casting for form elastic wave plane of reflection 4 between different media, through multiple elastic wave plane of reflection 4, further increase elastic wave plane of reflection 4's quantity, and then increase the propagation path of elastic wave.
Detailed description of the invention
A construction method of a multiple door type foundation grouting structure for vibration reduction of track upper cover property comprises the following steps:
(1) forecasting a vehicle-induced vibration frequency response curve through Plaxis or Abaqus commercial finite element software, and determining a frequency band in which vehicle-induced vibration energy is mainly concentrated in the upper cover property tunnel section;
(2) determining the number of the gate-shaped grouting layers to be three layers according to the number of the frequency bands and the numerical value in the prediction result, wherein the water-cement ratio of the gate-shaped grouting layer I1 is 0.5: 1, the volume ratio of cement paste to water glass paste is 1: 1.1; the gate-shaped grouting layer II 2 adopts a water cement ratio of 0.7: 1, the volume ratio of cement paste to water glass paste is 1: 0.5; the gate-shaped grouting layer III 3 adopts a water cement ratio of 1: 1, the volume ratio of cement paste to water glass paste is 1: 0.5;
(3) determining the specific spatial relationship between the upper cover building foundation 6 and the existing tunnel 5 at the lower part, arranging multiple door-shaped grouting layers at two sides of the tunnel, constructing layer by layer from inside to outside, and symmetrically grouting at two sides and the top from two sides to the middle when constructing each grouting layer. The concrete construction steps are as follows:
1) determining the hole site: determining the position of grouting holes according to the actual engineering requirements, and retesting, wherein the grouting holes are arranged in a quincunx manner, the longitudinal distance between the holes is 5m, and the row distance is 5 m;
2) drilling: after the grouting hole position is calibrated, moving a drilling machine to a drilling position, drilling to a certain depth, adopting a sleeve to protect the wall, pulling out the drilling machine after drilling to a designed position, checking whether impurities exist in the drilling hole, if so, removing the impurities by using a corresponding method, and then adding a hole cover on the hole opening to prevent the impurities from entering;
3) preparation work: according to the scheme, cement-water glass double-liquid grouting liquid is adopted, different grouting layers have different rigidity by adjusting the water cement ratio and the water glass ratio, three door-shaped grouting layers are arranged by adjusting the water cement ratio, and the rigidity is gradually decreased layer by layer. Determining grouting pressure according to the determined grouting parameters, and proportioning the grout according to the specification;
4) the construction sequence is as follows: multiple door-shaped grouting layers are constructed layer by layer from inside to outside, when each layer of grouting layer is constructed, the two sides are firstly and then the top is symmetrically grouted, and the top is from the two sides to the middle;
5) grouting: and (3) placing a grouting pipe at the drilling position, debugging a grouting machine firstly, performing on-site pre-grouting for 15 minutes, performing grouting construction after no problem exists, and cleaning the grouting pipe during grouting to prevent congestion, wherein the grouting time interval of each grouting layer is 1 hour.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Those skilled in the art should also realize that changes, modifications, additions and substitutions can be made without departing from the true spirit and scope of the invention.
Claims (5)
1. The utility model provides a multiple door type ground slip casting structure for damping of track upper cover property, its characterized in that: a plurality of layers of sequentially nested door-shaped grouting layers are arranged on the periphery of the existing tunnel and below the upper cover building foundation.
2. The multiple gate type foundation grouting structure for vibration damping of a track cover property according to claim 1, wherein: the gate-type grouting layer is a gate-type grouting layer I, a gate-type grouting layer II and a gate-type grouting layer III which are sequentially arranged from inside to outside and are arranged at equal intervals.
3. The multiple gate type foundation grouting structure for vibration damping of a track cover property according to claim 2, wherein: the gate-shaped grouting layer I is characterized in that the water cement ratio is 0.5: 1, the volume ratio of cement paste to water glass paste is 1: 1.1; the gate-shaped grouting layer II adopts a water cement ratio of 0.7: 1, the volume ratio of cement paste to water glass paste is 1: 0.5; and the gate-shaped grouting layer III is formed by mixing a cement mixture with a cement-water ratio of 1: 1, the volume ratio of cement paste to water glass paste is 1: 0.5.
4. a construction method of a multiple door type foundation grouting structure for vibration reduction of track upper cover property is characterized by comprising the following steps:
(1) forecasting a vehicle-induced vibration frequency response curve through finite element software, and determining a frequency band in which vehicle-induced vibration energy is mainly concentrated in the upper cover property tunnel section;
(2) determining the number of the gate-shaped grouting layers to be three according to the number of the frequency bands and the numerical value in the prediction result, wherein the water-cement ratio of the gate-shaped grouting layer I is 0.5: 1, the volume ratio of cement paste to water glass paste is 1: 1.1; the gate-shaped grouting layer II adopts a water cement ratio of 0.7: 1, the volume ratio of cement paste to water glass paste is 1: 0.5; and the gate-shaped grouting layer III adopts a water cement ratio of 1: 1, the volume ratio of cement paste to water glass paste is 1: 0.5;
(3) determining the specific spatial relationship between the upper cover property and the lower subway tunnel, arranging multiple door-shaped grouting layers on two sides of the tunnel, constructing layer by layer from inside to outside, and symmetrically grouting on two sides and the top when constructing each grouting layer, wherein the top is constructed from two sides to the middle to construct the upper cover building.
5. The construction method of the multiple gate type foundation grouting structure for vibration reduction of the track upper cover property according to claim 4, characterized in that the concrete construction steps of the multiple gate type grouting layer grouting are as follows:
(1) determining the hole site: determining the position of grouting holes according to the actual engineering requirements, and retesting, wherein the grouting holes are arranged in a quincunx manner, the longitudinal distance between the holes is 5m, and the row distance is 5 m;
(2) drilling: after the grouting hole position is calibrated, moving a drilling machine to a drilling position, drilling to a certain depth, adopting a sleeve to protect the wall, pulling out the drilling machine after drilling to a designed position, checking whether impurities exist in the drilling hole, if so, removing the impurities by using a corresponding method, and then adding a hole cover on the hole opening to prevent the impurities from entering;
(3) preparation work: determining grouting pressure and grouting quantity parameters through calculation, and mixing grouting slurry;
(4) the construction sequence is as follows: multiple door-shaped grouting layers are constructed layer by layer from inside to outside, when each layer of grouting layer is constructed, the two sides are firstly and then the top is symmetrically grouted, and the top is from the two sides to the middle;
(5) grouting: and (3) placing a grouting pipe at the drilling position, debugging a grouting machine firstly, performing on-site pre-grouting for 15 minutes, performing grouting construction after no problem exists, and cleaning the grouting pipe during grouting to prevent congestion, wherein the grouting time interval of each grouting layer is 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011465508.0A CN112726563A (en) | 2020-12-14 | 2020-12-14 | Multiple door type foundation grouting structure for vibration reduction of track upper cover property and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011465508.0A CN112726563A (en) | 2020-12-14 | 2020-12-14 | Multiple door type foundation grouting structure for vibration reduction of track upper cover property and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112726563A true CN112726563A (en) | 2021-04-30 |
Family
ID=75599653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011465508.0A Pending CN112726563A (en) | 2020-12-14 | 2020-12-14 | Multiple door type foundation grouting structure for vibration reduction of track upper cover property and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112726563A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995666A (en) * | 2011-09-13 | 2013-03-27 | 上海市基础工程有限公司 | Construction method for reducing effect of vibration on peripheral buildings (structures) |
| CN106968689A (en) * | 2017-03-21 | 2017-07-21 | 北京市政建设集团有限责任公司 | A kind of subregion for being adapted to the construction of tunnel proximate building strong grouting strengthening method such as not |
| CN108756893A (en) * | 2018-04-19 | 2018-11-06 | 济南城建集团有限公司 | A kind of city shallow tunnel vault soil stabilization method |
| CN108842840A (en) * | 2018-07-04 | 2018-11-20 | 湖南大学 | Perforating causes the weak intercalated layer slip-casting lifting method of building settlement under a kind of compensation subway tunnel |
| CN108843345A (en) * | 2018-06-29 | 2018-11-20 | 山东大学 | Divide sequence grouting and reinforcing Treatment Methods after a kind of city tunnel vault depression |
| CN111502697A (en) * | 2020-04-07 | 2020-08-07 | 中铁二十一局集团路桥工程有限公司 | Drilling design method for grouting and reinforcing surrounding rock of vault of tunnel under urban road |
| CN111608688A (en) * | 2020-05-27 | 2020-09-01 | 中铁建大桥工程局集团第二工程有限公司 | Method for reinforcing ground of shield underpass building |
-
2020
- 2020-12-14 CN CN202011465508.0A patent/CN112726563A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995666A (en) * | 2011-09-13 | 2013-03-27 | 上海市基础工程有限公司 | Construction method for reducing effect of vibration on peripheral buildings (structures) |
| CN106968689A (en) * | 2017-03-21 | 2017-07-21 | 北京市政建设集团有限责任公司 | A kind of subregion for being adapted to the construction of tunnel proximate building strong grouting strengthening method such as not |
| CN108756893A (en) * | 2018-04-19 | 2018-11-06 | 济南城建集团有限公司 | A kind of city shallow tunnel vault soil stabilization method |
| CN108843345A (en) * | 2018-06-29 | 2018-11-20 | 山东大学 | Divide sequence grouting and reinforcing Treatment Methods after a kind of city tunnel vault depression |
| CN108842840A (en) * | 2018-07-04 | 2018-11-20 | 湖南大学 | Perforating causes the weak intercalated layer slip-casting lifting method of building settlement under a kind of compensation subway tunnel |
| CN111502697A (en) * | 2020-04-07 | 2020-08-07 | 中铁二十一局集团路桥工程有限公司 | Drilling design method for grouting and reinforcing surrounding rock of vault of tunnel under urban road |
| CN111608688A (en) * | 2020-05-27 | 2020-09-01 | 中铁建大桥工程局集团第二工程有限公司 | Method for reinforcing ground of shield underpass building |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102306225B (en) | Method for simulating construction course and tunnel deformation influence value of multiline overlapping tunnel | |
| Chen | Research on combined construction technology for cross-subway tunnels in underground spaces | |
| WO2012136012A1 (en) | Assembled mud-rock flow debris dam and construction method thereof | |
| CN103981777A (en) | Metro shock absorption and vibration isolation elastic mixed light track bed | |
| CN110273438A (en) | A kind of step type vibration isolation ditch barrier and preparation method thereof | |
| CN105236872A (en) | Lightweight foam soil applied to roadbed filling of mountainous-area steep road section | |
| CN108301338A (en) | Mitigate barrier vibration isolation structure and method that Subway Vibration influences periphery heritage buildings | |
| CN111910692A (en) | Multi-row vibration isolation trench barrier structure and vibration isolation effect evaluation method | |
| CN110847327A (en) | Waterproof and drainage construction method for large-area basement roof | |
| CN110438851A (en) | A kind of rotary churning pile vibration isolation barrier and its construction method | |
| CN106320204A (en) | Vibration isolation barrier based on foam sandwich wave resistance plates | |
| CN104674853A (en) | Isolation trench | |
| CN201738343U (en) | Barrier vibration isolation integrated with diaphram wall and spraying-anchor support | |
| CN112726563A (en) | Multiple door type foundation grouting structure for vibration reduction of track upper cover property and construction method thereof | |
| CN212427247U (en) | Sandwich multilayer assembled vibration isolation trench | |
| CN205669211U (en) | A kind of prefabricated Gravity Retaining Wall | |
| CN109098058B (en) | Traffic load vibration reduction structure and construction method | |
| CN209537959U (en) | Traffic loading vibration-proof structure | |
| CN204530790U (en) | The continuous vibration isolation barrier of a kind of hard polyurethane foam having anchor pole to retrain | |
| CN106917331B (en) | Water-stopping reinforced roadbed structure for deep-buried karst region and construction method thereof | |
| CN104594136B (en) | Subway damping vibration-isolating elasticity mixing light railway roadbed controls technique | |
| CN210194604U (en) | Stirring grooving insertion type combined prefabricated special-shaped section composite foundation structure | |
| CN113832995A (en) | Operation method of modular tuff slope prefabricated reinforcing structure | |
| CN111270710A (en) | Quick assembly type concrete water storage and shock isolation ditch | |
| CN208009175U (en) | A kind of high liquid limit red clay railway embankment of hydrous fluids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |
|
| RJ01 | Rejection of invention patent application after publication |