EP3074574A1 - Procede de rehabilitation d'un ouvrage presentant une fissure par suivi d'une courbe representative de l'ecartement des bords de la fissure - Google Patents
Procede de rehabilitation d'un ouvrage presentant une fissure par suivi d'une courbe representative de l'ecartement des bords de la fissureInfo
- Publication number
- EP3074574A1 EP3074574A1 EP14805203.8A EP14805203A EP3074574A1 EP 3074574 A1 EP3074574 A1 EP 3074574A1 EP 14805203 A EP14805203 A EP 14805203A EP 3074574 A1 EP3074574 A1 EP 3074574A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crack
- injection
- soil
- curve
- edges
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000000926 separation method Methods 0.000 title 1
- 238000002347 injection Methods 0.000 claims abstract description 74
- 239000007924 injection Substances 0.000 claims abstract description 74
- 239000000126 substance Substances 0.000 claims abstract description 23
- 230000007423 decrease Effects 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims description 54
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000000284 resting effect Effects 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 239000011496 polyurethane foam Substances 0.000 claims description 4
- 239000012779 reinforcing material Substances 0.000 claims 1
- 238000007596 consolidation process Methods 0.000 description 7
- 239000006260 foam Substances 0.000 description 7
- 230000003071 parasitic effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- -1 MDI Isocyanate Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000763 evoking effect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
-
- 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
- E02D31/10—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 soil pressure or hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0229—Increasing or restoring the load-bearing capacity of building construction elements of foundations or foundation walls
Definitions
- the present invention relates to a method of rehabilitation of a structure resting on a collapsed soil having at least one crack resulting from the subsidence of the soil.
- the invention relates to a method for rehabilitating a structure resting on a floor, by treating its foundation soil by injecting an expansive substance to close said crack.
- a crack appearing on a structure can be a sign of a break in the materials constituting the structure and occurs when the constraints generated in the work concerned, exceed the limits of rupture for which it was conceived.
- the causes of soil subsidence are multiple. This is usually:
- Part A of the structure follows the settlement of the soil on which the structure of the structure rests, said ground floor and which will be defined in detail later.
- other parts of building B (often placed above the first) remain temporarily immobile in an unstable equilibrium, the two parts A, B being separated by cracks. This state of unstable equilibrium creates stresses that are often harmful for the durability of the structure.
- the diffusion is at an angle ⁇ with respect to the vertical, the stress sp being uniform inside the diffusion zone on a given horizontal plane.
- a value of between 30 ° and 45 ° is used.
- Figure 9 schematically shows the diffusion of ⁇ ⁇ with the depth from the previous equation.
- Seating floor includes a so-called ZI foundation layer which is located on the surface, ie immediately below the foundations of the structure, as well as the voids that may be present between the base layer and the foundations of the book. When it has a poor lift, it is likely to suffer under the effect of a load, a settlement and cause damage within the structure.
- the seat floor extends, in accordance with FIG. 5, over a depth between "0”, ie the lower level of the foundations, and "2B", the depth at which the stress ⁇ ⁇ is from order of 0.2 ⁇ 0 , "B" being the width of the foundation element (sole or pavement) through which the load is exerted.
- the value of "2B” can therefore be, for example, between 1.2m and 2m.
- the constraint ⁇ ⁇ y is between 0.2 ⁇ 0 and 0.01 ⁇ 0 and is therefore negligible. At this depth, a soil layer even with poor lift is less compacted due to its relatively large depth with respect to the applied load "q".
- the processes for rehabilitating a structure with a crack do not therefore include the implementation of such a deep consolidation method.
- the traditional techniques of rehabilitation of a structure presenting a crack consider, after comforting the ground in depth, filling of cracks with opening, pinning, then filling with a mortar without shrinkage.
- part (A) and (B) often has a misalignment which is not aesthetically pleasing.
- the filling made from the outside has its limits and does not allow to ensure a perfect contact between the elements (A) and (B)
- the additional material breaking pattern repetition and degrading the appearance of the wall in question when the crack is located on a wall of the structure coated with repeated patterns, for example a tiled wall, the additional material breaking pattern repetition and degrading the appearance of the wall in question.
- the invention proposes a method of comforting the superficial base soil of a structure, with a quality of finish not yet reached, the deep soil having been previously consolidated by a suitable technique.
- the object of the present invention is therefore to provide a method for the rehabilitation of a damaged structure, including a structure having at least one crack due to the subsidence of its ground, allowing both to improve the properties of the foundation soil of the structure and to neutralize the parasitic stresses caused by soil compaction, appeared consecutively on the structure.
- This objective is achieved with a method of rehabilitating a collapsed structure having at least one crack resulting from subsidence, in which a reinforcement substance is injected into the soil of the structure (ZI) at the right of said crack in a primary drilling hole, the method being characterized in that it further comprises, simultaneously with the injection, the acquisition of a revealing curve of the approaching of the edges of the crack, the injection being stopped as soon as a sudden slope decrease in absolute value is detected on the curve.
- a soil reinforcement substance when injected into the soil or at the interface between the soil and the foundation of the structure, in a quantity and / or at a sufficient pressure, it exerts, on the basis of the cracked structure, an upward thrust that tends to close the crack of the structure, that is to say to bring one to the other, the lower and upper edges of the crack.
- a sensor of a revealing parameter of the approximation between the edges of the crack is placed between two points located on the facade of the work, on the part and other of the crack.
- the sensor is connected to a reading device, and, simultaneously with the injection, the curve is read on the reading device.
- the sensor may for example be a displacement sensor adapted to measure the approximation between the edges of the crack.
- the senor makes it possible to detect infinitesimal displacements of the order of 10 microns.
- the sensor may also be a pressure sensor adapted to measure between the edges of the crack a pressure increase revealing the approximation between said edges.
- the pressure variations are measured with a high degree of accuracy, for example of the order of 0.005 bar.
- the method also allows the densification and improvement of the surface soil lift in the ZI layer by injection of the reinforcing substance, which increases the bearing capacity of the soil (in a soil of insufficient lift) and / or decreases its permeability in the case of soil sensitive to water changes. In the same way, it makes it possible to fill the empty spaces between the ground and the foundation of the structure.
- the slope of the curve is evaluated during a first interval AT S and then during a second time interval ⁇ 0 , T s and ⁇ 0 being between 10 seconds and 2 minutes, and preferably of the order of 1 minute, and even more preferably, 15 or 30 seconds.
- a sudden decrease in slope is detected when the slope in absolute value on the second interval is more than 30%, preferably more than 50% lower than the slope in absolute value on the first interval.
- the method On a cracked structure having a plurality of cracks, the method will generally be applied to those among the cracks that are most representative of the state of the structure in relation to a soil compaction problem.
- a crack when it is identified as very extensive, for example when it has a length greater than 1 meter, it will be treated by multiple injections, or by starting the injection at the level of the largest gauge at within the crack, by a first injection point I, then by successive injection points J, J ', K, K' alternately on either side of this first injection point I, either by starting injection by a first injection point K located at a first end of the crack considered, continuing the injection at a second injection point K 'located at a second end of this crack, then by successive points J , I alternately on either side of the center of the crack to close it gradually from its ends.
- the first borehole is located in a plane substantially aligned with the sensor and perpendicular to the facade.
- the injected reinforcement substance is an expansive substance, especially polyurethane foam.
- Figure 1 is a schematic illustration of a damaged work that can be rehabilitated by the method of the invention
- Figure 2 shows a detail of implementation of the method according to the invention
- Figure 3 shows the work of Figure 1 subjected to the method of the invention
- Figures 4A and 4B illustrate a crack of the structure respectively before and after the implementation of the method
- FIG. 5 schematically illustrates by a perspective view the drilling points that can be made in particular along extended cracks according to an embodiment of the present invention
- Figure 6 is a curve established by a pressure sensor fixed on both sides of the crack
- Figure 7 is a curve established with an elongation sensor fixed on both sides of the crack
- FIG. 8 schematically illustrates a sectional view of the base of a structure, comprising a void between the pavement and a base layer ZI, and a multi-port injection lance distributed along its length. axis at its end, and allowing a distribution of the expansive substance to fill the void and consolidate the ZI layer,
- Figure 10 shows a schematic view of the distribution of stresses ⁇ ⁇ in the soil, under the effect of the application of a load "q".
- the causes of this phenomenon can be multiple, either that the soil has been more compressible in some places than others, or that the loads applied to the structure have been unequally distributed, or still due to soil moisture variations. such as orientation (the south and west facing flanks are more desiccated than the north and east flanks), the presence of tree roots absorbing water from the soil, insufficient drainage, network leaks, etc.
- FIG 1 there is shown a roof 10 whose seat has undergone such a differential settlement. There is a significant settlement of the ground and, in fact, a subsidence of a lower portion of the flag 10, on its right side while an upper portion B remains at the same level as before the settlement.
- active cracks are located above stabilized cracks.
- a fissure When a fissure is identified as very large, for example when it is more than 1 meter in length, it will be treated with multiple injections, starting with the injection at the level of the largest of the crack, by a first injection point I, then by successive injection points J, J ', K, K' alternately on either side of this first injection point I, or by starting injection by a first injection point K located at a first end of the crack in question, by continuing the injection at a second injection point K 'situated at a second end of this crack, then by successive points J, I alternately on either side of the center of the crack to close it gradually from its ends.
- a prerequisite is that the soil in depth, that is to say located at a depth greater than 2B, B being the width of the sole supporting the structure, the closest to the crack, has never undergone any constraints having caused a loss of lift, because it has been redensified or consolidated by appropriate techniques.
- a second condition is the improvement and homogenization of the properties of the soil S vis-à-vis the applied loads and / or water variations, in order to avoid the subsequent occurrence of new problems of differential settlements.
- This second condition can be fulfilled by the injection into the soil S of a reinforcing substance, in particular an expansive substance, making it possible to densify the soil and thus to improve both its lift and its permeability.
- a third condition is the neutralization of parasitic stresses generated in the structure due to differential settlements and breaks in the structure. Indeed, a part of the superstructure could for example remain in overhang.
- the method according to the invention makes it possible to rehabilitate the damaged structure illustrated in FIG.
- a strain sensor 30 is placed on the front of the structure, on either side of the crack 12, preferably perpendicular to the mean direction of the crack.
- the stress sensor 30 is for example a pressure detector, connected respectively to two fixed points Q3, Q4 located on either side of the crack 22.
- An increase in pressure measured by the sensor 30 means that the two edges 24, 26 of the crack 22 tend to get closer.
- the pressure sensor 30 is connected to a reading device 40, here a computer, on which a first operator can read the curve illustrating the pressure values measured over time using the sensor 30.
- FIG. 5 which illustrates a particularly advantageous embodiment of the invention
- a borehole 50 as wide as an injection lance is drilled in line with the crack 22, in a slightly oblique trajectory directed towards the interior of the building 10 towards the ground layer ZI.
- This first borehole 50 is generally located in a plane P perpendicular to the facade 12 of the structure 10 and comprising the pressure sensor 30 (see FIG. 1) and is generally in line with the maximum spacing of the crack (often coinciding with the center of the crack).
- An injection lance 51 is inserted in the borehole 50: the lance 51 is positioned so that its lower end is placed in the layer ZI under the foundation of the flag 10. This lance 51 has at its penetrating end the seat floor, successive orifices in order to be able to spread the expansive substance both in the ZI bed layer and in the possible voids under foundation existing between the sole and the ZI layer.
- the reinforcing substance is injected at the interface between the foundation plate 14 and the ground S, this to fill the voids and ensure that the charges are well transmitted between these two elements.
- this step is called "keying injection”.
- the consolidation injection is parameterized (volume of substance injected, injection pressure, coefficient of expansion of the reinforcing substance if necessary, phasing of injections, etc.) so that the ground around the injection point is reinforced, and an upward thrust is exerted on the collapsed base A of the work to the right of the crack to be treated.
- the reinforcing substance is a polyurethane foam.
- a polyurethane foam is, for example, the result of a mixture of polyol and MDI Isocyanate.
- these two products are stored in a truck, in separate tanks. Both components are routed through pipes to the spray gun of the spray lance.
- the combination of the two products mixed under pressure with air injected by a two-component pump forms by chemical reactions an expansive foam which solidifies and acquires high mechanical characteristics.
- the curve of FIG. 6 gives the measured pressure values (on the ordinates) as a function of time (on the abscissa).
- the curve can be recorded indifferently by a sampling system over time (measurements at regular intervals) or continuously.
- T A 0 (point A on the curve) corresponds to the injection of the mixture of polyol and MDI Isocyanate into the depth of the seat ground with the aid of the injection lance 51. This moment, a certain time is necessary for the reaction of the two components.
- the preliminary phase during which the foam has not begun to expand and the ground has not yet been moved, is noted PHI on the curve.
- the injection does not involve any modification of the stresses exerted on the structure 10, which results in a first plateau PHI on the raised curve.
- the moment T B corresponds to the beginning of the movements of the collapsed part A of the structure because of the treatment of the ZI foundation floor.
- the foam propagates essentially laterally from the end of the injection lance 51.
- the grains of the soil reorganize with each other.
- the soil becomes denser under the effect of the lateral thrust of the foam, but the level of the ground seat remains for the moment unchanged. Again, no influence on the structure is measured.
- the pressure curve remains flat PH2.
- the seating floor once compacted (point T c of the curve), offers increased resistance to the propagation of the foam in the horizontal direction.
- the soil resistance in the vertical direction eventually becomes lower than its lateral resistance.
- the foam then tends to propagate upward, generating, on the base of the work 10, a thrust force directed upwards.
- This thrust force naturally tends to raise the collapsed portion of the structure 10, gradually bringing the lower edge 26 of the crack 22 closer to its upper edge 24.
- the pressure measured by the sensor then increases very rapidly, as illustrated on the curve by the phase noted PH3.
- the point T c therefore corresponds to the beginning of the lifting of part A.
- the increase in pressure is slower. Indeed, at a time T D (point D on the curve), the curve shows a slope break, which corresponds to the beginning of contact between the lower and upper edges of the crack. The injection is stopped as soon as the slope break is detected. The injector gun is cut.
- an experienced operator can stop the injection as soon as he detects with the naked eye a sharp break in the slope of the curve, the slope decreasing in absolute value.
- the operator generally waits for this modification of the curve to be confirmed over a predetermined time interval, of the order of ten seconds, for example between 15 and 30 seconds, after the breaking point.
- slope D generally less than 1 minute.
- the operator will stop the injection when at a time T, he has detected a decrease in the slope of at least 30%, preferably 50%, over a time interval of less than 1 minute. This detection can also be performed automatically, using appropriate software.
- the injection is stopped at a moment Ts
- Figure 4B illustrates the crack 22 after the consolidation injection is complete.
- the low point Ql of the work has returned to its original level Ql '.
- the other injection points J, J ', K, K', adjacent to the first injection point I are according to a first embodiment, made in drill holes made alternately to the left and to the right of the primary borehole. 50, substantially following the facade 12 of the building 10.
- the drill holes are spaced from the first borehole 50 and between them a predetermined constant distance d, for example equal to one meter.
- No injection shall be made more than 1 m away from the two points which are respectively at the base of the two ends of a crack.
- the senor used may be a displacement (elongation) detector, in particular an optical fiber detector allowing detection of displacements to within 10 microns.
- FIG. 7 The stress curve obtained with such a displacement sensor is illustrated in FIG. 7. It is the mirror of FIG. 6 previously described.
- the elongation measured by a sensor respectively fixed at a point of the lower part of the crack and a point of the upper part of the crack actually changes inversely with respect to the pressure measured between the edges of the crack: When the pressure increases, elongation decreases and vice versa.
- the injection into the first borehole is stopped as soon as the abrupt decrease in slope in absolute value (point D) is identified.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU92314A LU92314B1 (fr) | 2013-11-26 | 2013-11-26 | Procédé de réhabilitation d'un ouvrage présentant une fissure par suivi d'une courbe représentative de l'écartement des bords de la fissure |
PCT/EP2014/074838 WO2015078722A1 (fr) | 2013-11-26 | 2014-11-18 | Procede de rehabilitation d'un ouvrage presentant une fissure par suivi d'une courbe representative de l'ecartement des bords de la fissure |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3074574A1 true EP3074574A1 (fr) | 2016-10-05 |
EP3074574B1 EP3074574B1 (fr) | 2017-08-02 |
Family
ID=49841779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14805203.8A Active EP3074574B1 (fr) | 2013-11-26 | 2014-11-18 | Procede de rehabilitation d'un ouvrage presentant une fissure par suivi d'une courbe representative de l'ecartement des bords de la fissure |
Country Status (4)
Country | Link |
---|---|
US (1) | US10138641B2 (fr) |
EP (1) | EP3074574B1 (fr) |
LU (1) | LU92314B1 (fr) |
WO (1) | WO2015078722A1 (fr) |
Cited By (2)
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CN111962577A (zh) * | 2020-08-14 | 2020-11-20 | 山东建筑大学 | 一种用于砖混结构建筑物空间曲面旋转移位纠倾方法 |
CN111962576A (zh) * | 2020-08-14 | 2020-11-20 | 山东建筑大学 | 一种基于空间曲面轨迹的框架结构建筑物纠倾方法 |
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AU2013203983A1 (en) * | 2012-12-13 | 2014-07-03 | Rigid Ground Pty Ltd | Treating particulate and connecting slab portions |
US11326310B2 (en) * | 2015-08-21 | 2022-05-10 | Donald Velazquez | Concrete and masonry restoration and ornamentation method and apparatus |
CN106894409B (zh) * | 2015-12-17 | 2019-02-12 | 上海华峰材料科技研究院(有限合伙) | 用于地基沉降的聚氨酯注浆加固抬升快速修复方法 |
CN106703836A (zh) * | 2016-12-29 | 2017-05-24 | 中铁隧道勘测设计院有限公司 | 既有盾构圆隧道软土基底处理方法 |
IT201700037754A1 (it) * | 2017-04-06 | 2018-10-06 | Thur Srl | Procedimento per migliorare le caratteristiche meccaniche ed idrauliche dei terreni. |
US10487473B2 (en) * | 2017-06-20 | 2019-11-26 | Charles L. Asplin | Wall lifting methods |
JP6895842B2 (ja) * | 2017-07-31 | 2021-06-30 | 大成建設株式会社 | 地盤改良方法 |
US10465355B2 (en) * | 2017-09-06 | 2019-11-05 | Uretek Usa, Inc. | Injection tube countersinking |
CN108343102B (zh) * | 2018-04-26 | 2024-02-27 | 北京恒祥宏业基础加固技术有限公司 | 一种桩基础沉降加固顶升调平结构及其施工方法 |
IT201800007020A1 (it) | 2018-07-09 | 2020-01-09 | Sistema e procedimento per l'iniezione di resine espandenti in terreni da consolidare. | |
US11885092B2 (en) * | 2019-01-31 | 2024-01-30 | Terracon Consultants, Inc. | Reinforcement structures for tensionless concrete pier foundations and methods of constructing the same |
US11525230B2 (en) * | 2019-03-19 | 2022-12-13 | Eaglelift, Inc. | System and method for mitigation of liquefaction |
CN112343104B (zh) * | 2019-08-09 | 2022-06-17 | 北京恒祥宏业基础加固技术有限公司 | 一种高铁大型墩台的加固抬升方法 |
US10961682B1 (en) * | 2020-01-14 | 2021-03-30 | John Dustin Williams | System and methods for concrete slab foundation repair |
CN111749198B (zh) * | 2020-05-30 | 2022-11-25 | 郑州安源工程技术有限公司 | 渠道板水下注浆稳固与抬升方法 |
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ITMI20021995A1 (it) * | 2002-09-19 | 2004-03-20 | Uretek Srl | Procedimento per riparare e/o mpermeabilizzare e/o isolare e/o rinforzare e/o ricostruire l'integrita' strutturale di sistemi murari |
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2013
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2014
- 2014-11-18 US US15/039,149 patent/US10138641B2/en active Active
- 2014-11-18 EP EP14805203.8A patent/EP3074574B1/fr active Active
- 2014-11-18 WO PCT/EP2014/074838 patent/WO2015078722A1/fr active Application Filing
Non-Patent Citations (1)
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111962577A (zh) * | 2020-08-14 | 2020-11-20 | 山东建筑大学 | 一种用于砖混结构建筑物空间曲面旋转移位纠倾方法 |
CN111962576A (zh) * | 2020-08-14 | 2020-11-20 | 山东建筑大学 | 一种基于空间曲面轨迹的框架结构建筑物纠倾方法 |
WO2022033031A1 (fr) * | 2020-08-14 | 2022-02-17 | 山东建筑大学 | Procédé de rectification d'inclinaison d'un bâtiment à structure en béton à briques au moyen d'un déplacement rotatif de surface incurvée spatiale |
WO2022033030A1 (fr) * | 2020-08-14 | 2022-02-17 | 山东建筑大学 | Procédé de rectification de construction à structure à ossature basé sur une trajectoire de surface incurvée spatiale |
Also Published As
Publication number | Publication date |
---|---|
EP3074574B1 (fr) | 2017-08-02 |
LU92314B1 (fr) | 2015-05-27 |
US20160362901A1 (en) | 2016-12-15 |
US10138641B2 (en) | 2018-11-27 |
WO2015078722A1 (fr) | 2015-06-04 |
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