EP0500444B1 - Unterirdisches rohrförmiges Bauwerk - Google Patents

Unterirdisches rohrförmiges Bauwerk Download PDF

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EP0500444B1
EP0500444B1 EP92400417A EP92400417A EP0500444B1 EP 0500444 B1 EP0500444 B1 EP 0500444B1 EP 92400417 A EP92400417 A EP 92400417A EP 92400417 A EP92400417 A EP 92400417A EP 0500444 B1 EP0500444 B1 EP 0500444B1
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Prior art keywords
elements
walls
tubular structure
supports
central
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EP92400417A
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French (fr)
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EP0500444B2 (de
EP0500444A1 (de
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Marcel Matière
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them

Definitions

  • the subject of the invention is a buried tubular structure produced by assembling prefabricated longitudinal elements and having a large width with respect to its height, such a structure possibly having large dimensions and, for example, providing two parallel lanes of road traffic.
  • the invention is more particularly suited to the production of structures of rectangular section.
  • European patent EP 081.402 describes a process for producing tubular structures which may have very large sections and made up of adjacent sections, each comprising, in a preferred embodiment, two side elements with vertical lateral wall, placed on the side and on the other of a raft, and on which is placed a curved element in the shape of a vault. Even for very large sections, such elements remain transportable if their width is limited to the road gauge because they can be stacked, lengthwise, on a road trailer.
  • One must, however, have at least two molds, one for the side elements and the other for the arch elements, and possibly a mold to strike it.
  • each section of the conduit is made up of two elements, respectively a lower element forming a raft which is raised on its edges to provide two longitudinal supports and an upper element in the form of a resting arch by its lateral edges on said supports.
  • the height of the passage must be limited when the upper level, for example that of a road or a railway, is determined and the level of the excavation is not to be lowered too low , for example to stay above the water table. It may be preferable, in this case, to use structures with a rectangular section or, in any case, whose upper part is relatively flat.
  • the subject of the invention is a provision making it possible to economically solve all of these problems and to produce tubular structures of large dimensions, having a flattened section, preferably rectangular, and made up of elements of a single type, which can be made in the same mold, such structures can be buried under an embankment to constitute, for example, underground passages for vehicles or very large nozzles for the passage of a river or the evacuation of floods, for example when crossing a valley by a highway or a railroad laid on an embankment.
  • box elements comprising two lateral supports and a central support posed problems of load distribution between the three supports which could lead to cracks or ruptures of an overly loaded support, in particular of the central support.
  • the invention therefore relates to a large buried tubular structure, in particular for the passage of at least two vehicle traffic lanes, produced by assembling prefabricated longitudinal elements constituting adjacent sections placed end to end, each section being constituted , in cross section, of two substantially identical molded elements, in the form of an open box comprising a flat central part, two side walls and a central wall, substantially perpendicular to the flat central part, respectively a lower element resting on the ground by its part central and an upper upturned element supported by the ends of its side walls and central on the corresponding ends respectively of the side and central walls of the lower element, so as to constitute three separated supports each consisting of a pair of superimposed walls, the walls of two a then resting directly on one another and covering a fixed height, and the third support being associated with means of at least temporary adjustment of the height of the two superimposed walls, capable of ensuring an equal distribution of the stresses applied on the three supports depending on the applied loads, foreseeable deformations and settlements.
  • the means for adjusting the height of the third pair of walls comprise an intermediate support device, of adjustable thickness, interposed between the ends facing said walls for adjustment, at least temporarily , the distance between them and the height of said third support.
  • Such devices can be of a known type used for the recovery of the foundations of a building under construction and described for example in documents JP-A-60,119,827 or US-A-4,191,496.
  • each intermediate support device consists of at least one hydraulic or mechanical jack, comprising two parts which are movable axially with respect to one another and which bear respectively one on the lower element and the another on the upper element of the structure.
  • an elongated inflatable envelope extending at least over part of the length of the joint between the ends facing the walls of the two superimposed elements.
  • the distance between the ends facing the two walls can be adjusted so as to obtain a determined distribution of the support pressures between the three supports. longitudinal and, after assembly of the elements, realization of the embankment and stabilization of the whole of the conduit and the distribution of the stresses, a final blocking of the ends is carried out opposite the longitudinal support of adjustable height and the the intermediate support device is removed.
  • the two superposed elements respectively lower and upper, have substantially identical profiles and are made of concrete in the same mold, and two of the longitudinal supports have ends with inverted profiles, respectively hollow and projecting , capable of engaging one another when the upper element is placed on the lower element, the opposite ends constituting the third longitudinal support being symmetrical with respect to a median plane passing through the other two longitudinal supports.
  • the end of the wall constituting the third symmetrical support can have a crenellated longitudinal profile comprising at least two longitudinal parts respectively placed at two symmetrical levels relative to the median plane and having in cross section inverted hollow and projecting profiles , the upper element being offset longitudinally at installation with respect to the lower element so that the crenellated ends facing the two elements of each pair engage one in the other.
  • At least one of the three longitudinal supports formed by the superimposed side and central walls has an intermediate bar interposed between the ends of the corresponding walls, the latter being shorter than the other two walls so as to leave between the said ends when the elements are installed, a space in which the bar is placed, the latter having a height equal to or slightly greater than that of the said space, that is to say double the distance between the end of the wall and the plane passing through the lateral supports.
  • such an intermediate bar can be limited by two longitudinal edges with a convex profile, the end of the central wall having a corresponding concave longitudinal profile which allows, to admit slight displacements or deformations of the two elements one compared to the other, for example as a result of differential settlements.
  • Figure 1 there is shown, in cross section, a structure according to the invention comprising two adjoining sections for the passage of vehicles.
  • the structure 1 is placed on the bottom 11, leveled and packed, with a trench 12 and covered with an embankment 13 on which one can pass below a track 14 of road or rail traffic.
  • the structure 1 can, as shown in Figure 1, be used for the passage of vehicles or of a river, for example in a valley, for the evacuation of floods.
  • Structure 1 is made up of prefabricated reinforced concrete elements, produced industrially and assembled on site, and comprises, for each cross section, a pair of superimposed elements, respectively a lower element 2 and an upper element 2 '. These two elements have identical shapes, the upper element 2 'being simply turned over before being placed on the lower element 2.
  • Each element 2 is molded in one piece and has a flat central part 21 bordered on its two sides by two vertical side walls 22, 23, and in the middle of which rises a central wall 24, the whole of the box having thus a double U section which opens upwards for the lower element 2 resting on the ground 11 by its base 21, and which opens downwards for the upper element 2 'turned over, and therefore comprises a flat central part 21 'bordered by two side walls 22', 23 ', and divided in two by a central wall 24'.
  • the two elements 2, 2 ' having identical sections, after turning over, the upper element 2' rests by the ends 4 ', 3', of its side walls 23 ', 22', respectively on the ends 3, 4, side walls 22, 23, of the lower element 21, the central walls 24 ', 24, bearing one on the other by their ends 5', 5.
  • Each pair of superimposed elements 21, 21 ′ therefore constitutes a gallery section comprising two contiguous sections S1, S2, and, by placing one after the other, along a longitudinal axis x'x, a certain number of pairs of elements A, A '; B, B '; CC' ; ..., one can constitute a tubular structure comprising two adjoining sections S1, S2, and having a rectangular section the width L of which can be large relative to the height H and, for example, exceed double thereof.
  • elements comprising a flat central part, two side walls and a central wall, and capable of constituting the upper element and the lower element of a section of double gallery.
  • the two superimposed elements 2 and 2 ' can be cast in the same mold 14, easy to design, and consisting for example of a fixed base on which are fixed formwork walls 15 making it possible to give the element 2 the desired shape and dimensions, inserts 16 being provided for the shuttering of the ends 3, 4, 5, of the vertical walls 22, 23, 24.
  • the latter must have a symmetry allowing the inversion. This is why the end 5 of the central wall 24 must be symmetrical with respect to the plane passing through the two lateral supports 3, 4. In the simplest embodiment shown in FIG. 1, the end 5 has a flat support face 50 which is placed in this plane.
  • the box is more rigid on its edges than in its central part and it is necessary to take into account the loads transmitted by the backfill, overloads and, possibly, differential settlements.
  • the relative levels of the three supports 3, 4, 5, can therefore be adjusted according to the heights calculated in advance.
  • Figure 4 which is a longitudinal section of a gallery consisting of several adjacent cells A, A '; B, B '; CC' ; ..., shows such a particularly advantageous embodiment of the central support.
  • the central walls 24, 24', of the two elements 2, 2 ' have a height slightly less than that side walls 22, 23, so that the ends 5, 5 'of the central walls 24, 24' are separated by a space e when the upper element 2 'is placed on the lower element 2.
  • recesses 51 are arranged along the end 5 of the central wall 24 so as to form, when the upper element 2 ′ is turned upside down, a housing consisting of two recesses opposite 51, 51 ', and in which a hydraulic cylinder 52 can be placed, the two elements of which bear, in opposite directions, on the ends 5, 5', of the two walls 24, 24 '.
  • the jacks 52 thus constitute, between the central walls 24, 24 ′, of the two elements 2, 2 ′, superimposed, an intermediate support device of adjustable thickness which, after having placed the upper element 2 ′ on the lower element 2, to act on the distance e between the ends 5, 5 ', of the central walls so as to modify the distribution of the stresses on the three supports 3, 4'; 5.5 '; 4, 3 ', for example to ensure an equal distribution or, if preferred, to increase the stresses applied on the central support in th loading the lateral supports.
  • the intermediate support 5, 5 ′ can be locked in this position for example by interposing shims between the ends 5, 5 ′, or, simply, by carrying out a concrete bonding , the ends 5, 5 ′, which can optionally be provided, as shown in FIG. 5, with reinforcements 53 which are embedded in a mortar using suitable formwork elements.
  • the cylinders 52 can be removed.
  • This adjustment of the distribution of the stresses on the three supports can be carried out either at the installation of each cell, or after the installation of several cells covering a significant length and, possibly, of the whole of the structure. For example, this adjustment can be made after the embankment 13 has been made so as to take account of the differential settlements which have occurred and, if necessary, to correct them.
  • the intermediate support device can be produced in different ways.
  • the cylinders 52 may be replaced by an elongated inflatable envelope 54 interposed between the ends 5, 5 ', and extending over almost the entire length of the central wall 24, 24 ′, leaving the two ends of the parts 55, possibly provided with waiting frames 53, which can be wedged and concreted after adjusting the height of the support, the inflatable envelope 54 then being removed and the corresponding space possibly concreted.
  • the intermediate supports 5, 5 ' are perfectly symmetrical and therefore make it possible to produce the two elements 2, 2', of each cell in the same mold.
  • the central wall 24 has a crenellated profile, its end 5 consisting of two longitudinal parts 56, 57, placed at different levels symmetrical with respect to at plane P passing through the two lateral supports 3, 4, the part 56 being below this plane and the part 57 above.
  • the two parts 56 and 57 are provided, respectively, at their end, with a longitudinal boss 25 and a groove 26 having corresponding projecting and recessed profiles.
  • the upper element 2 ' must be offset longitudinally by a distance corresponding to the length of the parts 56, 57, so that the short part 56' of the central wall 24 'of the upper element 2' is superimposed on the long part 57 of the central wall 24 of the lower element 2, their hollow ends 26 and projecting 25 engaging one in the other.
  • the length of the elements being fairly short compared to their width L, only two parts 56, 57, of different levels will be provided on the central wall 24. But one could also, for a longer length, provide several offset parts 56, 57, in even number, constituting a crenellated profile.
  • FIG 10 another example of a symmetrical intermediate support is shown.
  • the central wall 24 is, over at least part of its length, shorter than the side walls 22, 23.
  • the ends 5, 5', of the two central walls 24, 24 ′ are separated by a space in which an intermediate bar 6 can be placed ensuring the transfer of the forces and of height equal to that of said space, that is to say twice the distance between the end 5 of the central wall 24 and the plane P passing through the lateral supports 3, 4.
  • the height of the bar 6 can also be slightly greater so that, after installation, the central support is more loaded than lateral supports.
  • the two longitudinal edges 61, 62 of the latter have a transverse profile forming a projection 25 and engage, when laying, in the ends 5, 5 ′, of the walls 24, 24 ', these being provided with grooves 26 having a corresponding hollow profile.
  • the bar 6 is given an olive shape bounded by two longitudinal edges 61, 62, having a convex circular profile, the ends 5, 5 ′, of the central walls 24, 24 ′, having a concave circular profile with the same curvature.
  • the olive bar 6 can be oriented slightly relative to the two superimposed elements 2, 2 ′, which makes it possible to take into account displacements or deformations due, for example, to differential settlements and to avoid stress concentrations which could cause cracking.
  • the jacks constituting an intermediate support of adjustable height could be interposed between the ends of the side walls, the central support being fixed.
  • the end 5 of the central wall 24 could be provided with a lateral boss 27 giving it, in cross section, a stepped profile. After turning over, the two lateral bosses 27, 27 ′ are placed on either side of the longitudinal median plane and engage with each other ensuring the centering of the end 5 ′ on the end 5 of the lower wall 24.
  • the bosses 27 may extend over the entire length of the wall 24 or else over a part of the latter, alternately on either side of the median plane, which ensures a better centering effect.
  • the invention applies, in general, to the production of structures of great width with respect to their height and having a flattened section, but this is not necessarily rectangular.
  • each passage section a rounded profile in the corners, as shown in FIG. 1.
  • the elements 2 if it is preferable to give the elements 2 a rectangular section, this could also be, for example, trapezoidal, the side walls 22, 23, being inclined relative to the bottom 21.
  • a damping strip can play the role of a seal against infiltration but also makes it possible, when the central support 5, 5 ′, is raised, to absorb vibrations and to remove hard spots for 'passing vehicles above the structure on a taxiway 14 which, more often than not, is very close to the upper face 21 'of the structure 1.
  • the invention also makes it possible, thanks to the use of two superimposed double U elements, to optionally adapt the inclination of the upper face 21 ′ to that of the track 14 passing over the structure 1.
  • the lower face 21 resting on the ground be horizontal

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Sewage (AREA)
  • Revetment (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Claims (15)

1. Unterirdisches, grossdimensionniertes rohrförmiges Bauwerk, insbesondere zum Durchgang von mindestens zwei Verkehrsbahnen für Fahrzeuge, hergestellt durch den Zusammenbau von vorgefertigten Längselementen, die benachbarte stossweise angeordnete Abschnitte bilden, wobei jeder Abschnitt aus zwei im Querschnitt wesentlich identischen als offene kastenförmige Formteile (2, 2') ausgebildet ist, die aus einem ebenen Mittelteil (21), (21'), zwei Seitenwände (22, 23) (22', 23') und einer Zentralwand (24) (24') bestehen, die wesentlich senkrecht zum ebenen Mittelteil (21) verlaufen, je ein Unterteil (2) mit seinem auf dem Boden aufliegenden Mittelteil (21) und ein verkehrtes Oberteil (2'), das mit den Enden (4', 3', 5') seiner Seiten- (23', 22') und Zentralwände (24') auf den entsprechenden Enden (3, 4, 5) der Seiten- (22, 23) und Zentralwände (24) des Unterteils (2) derart zur Auflage kommt, dass dadurch drei im Abstand angeordnete je aus einem Paar übereinanderliegenden Wände bestehenden Auflagen gebildet werden, wobei die Wände von zwei Auflagen (22, 23', 23, 22') sich unmittelbar die eine auf der anderen abstützen und eine feste Höhe abdecken, und wobei der dritten Auflage (24, 24') Mittel (52, 54, 6) zur mindestens provisorischen Höheneinstellung der beiden übereinanderliegenden Wände zugeordnet sind, die geeignet ist entsprechend den beaufschlagten Lasten, den zu erwartenden Verformungen und den Setzungen eine gleimässige Verteilung der mit Belastungen beaufschlagten drei Auflagen zu gewährleisten.
2. Unterirdisches rohrförmiges Bauwerk nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zur Höheneinstellung des dritten Wände-Paares ((24, 24') aus einer dazwischengesetzten Abstützvorrichtung (52, 6) mit einstellbarer Dicke bestehen, die zwischen den Enden (5, 5') dieser gegenüberüberliegenden Wänden (24, 24') zur mindestens provisorischen Einstellung des Abstandes zwischen denselben und der Höhe dieser dritten Auflage eingefügt ist.
3. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 2, dadurch gekennzeichnet, dass jedem aus dem aufeinangerliegende Ober- (2') bzw. Unterteil (2) gebildete Paar eine dazwischengesetzte Abstützvorrichtung (52) (6) zwischen den Enden (5, 5') der zentralen Wände (24, 24') zugeordnet ist.
4. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 2, dadurch gekennzeichnet, dass jedem aus dem aufeinanderliegende Ober- (2') bzw. Unterteil (2) gebildete Paar mindestens eine dazwischengesetzte Abstützvorrichtung (52) (6) zugeordnet ist, die zwischen den Enden (5, 5') mindestens einem Paar Seitenwände (22, 23) auf mindestens einer Seite des Bauwerkes (1) eingefügt ist.
5. Unterirdisches rohrförmiges Bauwerk (1) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass jede Zwischenabstützvorrichtung aus mindestens einem Hydraulik- oder Mechanikzylinder (5) besteht, der zwei axial zueinander verfahrbare Teile aufweist, wobei sich das eine auf dem unteren Element (2) und das andere auf dem oberen Element (2') abstützt.
6. Unterirdisches rohrförmiges Bauwerk (1) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass jede Zwischenabstützvorrichtung aus einem langgestreckten aufblasbaren Mantel (54) besteht, der sich über mindestens ein Längsteil des Stosses zwischen den Enden (5, 5') gegenüber den Wänden (24, 24') der beiden übereinanderliegenden Elemente (2, 2') erstreckt.
7. Unterirdisches rohrförmiges Bauwerk nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass der Zwischenabstützvorrichtung (52, 6) Mittel (53) zur endgültigen Blockierung der Enden (5, 5') gegenüber den die dritte Auflage bildenden Wände (24, 24') nach der Höheneinstellung der letzteren zugeornet sind, wobei die Zwischenabstützvorrichtung (52, 6) nach der Blockierung herausgenommen wird.
8. Unterirdisches rohrförmiges Bauwerk (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die beiden oberen (2) bzw. unteren (2') Elemente von jedem Paar im wesentlichen gleiche Profile aufweisen und aus Beton in einer Form gefertigt werden, dass zwei der Längsauflagen Ende (3, 4) mit einem verkehrten hohlen (31) und einem vorspringenden (41) Profil aufweisen, die beim Einbau des oberen Elementes (2') auf dem unteren Element (2) ineinander eingreifen können, und dass die die dritte Längsauflage bildenden gegenüberliegenden Enden (5, 5') zu einer durch die beiden anderen Längsauflagen (3, 4'; 4, 3') verlaufende Ebene (P) symmetrisch sind.
9. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 8, dadurch gekennzeichnet, dass das die dritte symmetrische Auflage bildende Ende (5) der Wand (24) einen zinnenartigen Längsprofil aus mindestens zwei Teilen (56, 57) aufweist, wobei deren Längskanten (26, 25) je zu der durch die beiden anderen Auflagen verlaufende Ebene (P) in zwei symmetrischen Lagen liegen und im Querschnitt verkehrte hohle und vorspringende Profile aufweisen, wobei das obere Element (2') beim Einbau zu dem unteren Element (2) in Längsrichtung versetzt wird, sodass die zinnenartigen gegenüber den beiden Elemente (2, 2') von jedem Paar befindlichen Enden ineinandergreifen.
10. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 8, dadurch gekennzeichnet, dass mindestens eine der drei durch die übereinanderliegenden Seiten- und Zentralwände gebildeten Längsauflagen (3, 3'; 4, 4'; 5, 5') einen zwischen den Enden (5, 5') der entsprechenden Wände (24, 24') dazwischengesetzten Steg (6) aufweist, wobei letztere kürzer als die beiden anderen Wände (22, 23) sind, sodass beim Einbau der Elemente zwischen diesen Enden (5, 5') ein Raum zur Aufnhame des Stegs (6) gebildet wird, wobei dessen Höhe mindestens derjenigen dieses Raumes entspricht.
11. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 10, dadurch gekennzeichnet, dass der Zwischensteg (6) eine Höhe aufweist, die etwas grösser ist als der doppelte Abstand zwischen dem Ende (5) der Zentralwand und der durch die Seitenauflagen (3, 4) verlaufende Ebene (P) ist.
12. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 10, dadurch gekennzeichnet, dass der Steg (6) durch zwei Längskanten (61, 62) mit balligem Profil begrenzt ist, und dass das Ende (5) der Zentralwand (24) einen entsprechenden Hohlprofil zwecks Zulassung leichter Verschiebungen oder Verformungen der beiden Elemente (2, 2') zueinander aufweist.
13. Unterirdisches rohrförmiges Bauwerk (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Ende (5) der Zentralwand (24) in einer etwas grösseren Höhenlage als die Lage der durch die beiden Seitenauflagen verlaufende Ebene P angeordnet ist, sodass die mittlere Auflage (5, 5') höher belastet wird als die beiden Seitenauflagen (3, 4') (4, 3').
14. Unterirdisches rohrförmiges Bauwerk (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass ein Band (27) aus einem leicht kompressierbarem Werkstoff mindestens zwischen den Seitenauflagen (3, 4") (4, 3') angeordnet wird.
15. Unterirdisches rohrförmiges Bauwerk (1) nach Anspruch 13, dadurch gekennzeichnet, dass die beiden Seitenauflagen (3, 4') (4, 3') mindestens durch Verkeilung unterschiedliche Höhen erhalten, sodass das Mittelteil (21') des oberen Elementes (2') zu dem zentralen Teil (21) des auf dem Boden aufliegenden unteren Elementes (2) leicht geneigt ist.
EP92400417A 1991-02-18 1992-02-17 Unterirdisches rohrförmiges Bauwerk Expired - Lifetime EP0500444B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9101908A FR2672937B1 (fr) 1991-02-18 1991-02-18 Structure tubulaire enterree et son procede de realisation.
FR9101908 1991-02-18

Publications (3)

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EP0500444A1 EP0500444A1 (de) 1992-08-26
EP0500444B1 true EP0500444B1 (de) 1995-07-19
EP0500444B2 EP0500444B2 (de) 1998-04-15

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EP92400417A Expired - Lifetime EP0500444B2 (de) 1991-02-18 1992-02-17 Unterirdisches rohrförmiges Bauwerk

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EP (1) EP0500444B2 (de)
AT (1) ATE125322T1 (de)
DE (1) DE69203480D1 (de)
FR (1) FR2672937B1 (de)

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CN109505308A (zh) * 2018-12-12 2019-03-22 中国十七冶集团有限公司 地下管廊、管沟砼侧压力与外支撑土体平衡施工方法
CN111251448A (zh) * 2020-01-19 2020-06-09 上海建工四建集团有限公司 一种预制地道结构的浇筑方法
CN113585339A (zh) * 2021-08-26 2021-11-02 南京钜力智能制造技术研究院有限公司 一种城市地下货运用装配式预制混凝土管廊及其制造方法

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US4191496A (en) * 1977-01-05 1980-03-04 Becker Robert F Gas-bag supported structural foundation
JPS60119827A (ja) * 1983-11-30 1985-06-27 Natl House Ind Co Ltd 基礎高さ調整方法
FR2642110B1 (fr) * 1989-01-20 1991-05-03 Matiere Marcel Procede de realisation d'un conduit enterre

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FR2672937A1 (fr) 1992-08-21
ATE125322T1 (de) 1995-08-15
EP0500444B2 (de) 1998-04-15
DE69203480D1 (de) 1995-08-24
FR2672937B1 (fr) 1997-12-05
EP0500444A1 (de) 1992-08-26

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