PT101931B

PT101931B - PROCESS OF CONNECTION OF PRE-MANUFACTURED PASTES FOR THE EXECUTION OF PASSING TUNES

Info

Publication number: PT101931B
Application number: PT10193196A
Authority: PT
Inventors: Alberto Tomas Vieira
Original assignee: Pavicentro Pre Fabricacao Sa
Priority date: 1996-10-25
Filing date: 1996-10-25
Publication date: 1999-08-31
Also published as: PT101931A

Abstract

Process for connecting prefabricated pieces for building passage tunnels using prefabricated elements 1, 2, in the form of a semi-circular crown, having a prefabricated support 3 embedded in a foundation produced in situ 4, 5, with a groove of concave semi-cylindrical shape 12 where the pieces 1, 2 are inserted with the end of convex semi- cylindrical shape 11, with interposition between the two surfaces of a tolerance-correction sheet 16 with reduced friction and connection between pieces at its top achieved between a surface with a convex semi-cylindrical shape 6 and another of concave semi-cylindrical shape 7, with interposition between the two surfaces of a tolerance-correction sheet 15 with reduced friction, supplemented by a screw 13 of curved shape, opening thereof taking place in a cavity 8 and opening, longitudinally, all the component pieces of the tunnel with steel cables 14 anchored in the tops of the aforesaid tunnel. <IMAGE>

Description

DESCRIÇÃODESCRIPTION

PROCESSO DE LIGAÇÃO DE PEÇAS PRÉ-FÀBRICADAS PARA A EXECUÇÃOPROCESS FOR CONNECTING PRE-FACTORY PARTS FOR EXECUTION

DE TÚNEIS DE PASSAGEMPASSING TUNNELS

A presente patente de invenção refere-se a um processo de ligação de peças pré-fabricadas para a execução de túneis de passagem por elementos pré-fabricados em betão armado (1,2) conseguida através da justaposição de peças em forma de coroa semi-circular.The present invention patent refers to a process for connecting prefabricated parts for the execution of passage tunnels by prefabricated elements in reinforced concrete (1,2) achieved through the juxtaposition of semi-crown-shaped pieces Circular.

funcionamento do conjunto esta assegurado pelo posicionamento contrafiado das peças (1,2), pela configuração das juntas verticais tipo macho-fémea, bem como pela geometria especial de ligação tanto ao nivel da fundação como na ligação entre peças no seu topo.The operation of the set is ensured by the counterfeited positioning of the pieces (1,2), by the configuration of the vertical male-female joints, as well as by the special connection geometry both at the level of the foundation and in the connection between pieces at its top.

A tecnologia de construção de túneis de passagem de grandes secções tem estado restrita a construção recorrendo a estruturas metãlicas, com os riscos de corrosão que lhe estão associados e a túneis de passagem em betão armado construídos .in sita, com as limitações normais resultantes de uma construção tradicional, acrescidas de uma grande falta de rigor técnico que, normalmente, se verifica nas obras deste tipo, como sejam ausência de controlo nos materiais empregues, ou ainda, recorrendo a peças pre-fabricadas fazendo-se a sua união com betonagem complementar em obra e, como tal, não permitindo a utilização do túnel de passagem .imediatamente.The technology of construction of passage tunnels of large sections has been restricted to construction using metallic structures, with the risks of corrosion associated with it and of reinforced concrete passage tunnels built .in sita, with the normal limitations resulting from a traditional construction, plus a great lack of technical rigor that normally occurs in works of this type, such as the absence of control over the materials used, or even, using pre-fabricated parts making them join with complementary concreting in and, as such, not allowing the use of the passage tunnel. immediately.

Esta invenção tem por base a união de peças pré-fabricadas para a construção de túneis de passagem de grandes secções sendo caracterizada pela união, topo a topo, de duas peças em forma de coroa semi-circularThis invention is based on the joining of prefabricated parts for the construction of passage tunnels of large sections and is characterized by the joining, end to end, of two parts in the shape of a semi-circular crown

(Ί,2) que sao acopladas longitudinalmente paaa foamaa o túnel dè passagem. 0 funcionamento do conjunto assim foamado esta asseguãado peto posicionamento contaafiado das peças (1,2), pela conf.iguaação das juntas tipo macho-femea, e pela geometaia especial de ligação, ao fundação, dev.ido ã existência na zona infeaioa da passagem de continuo em betão (3) encostaado numa fundação executada in veoZccacó nivel da um apoio cn situ (4), c.om uma aanhuaa de foama semi-cilindaica côncava (7Z) tipo femea. onde vão sea ãnseaidas as peças (J,Z) esta com a extaemidade de foama semi-eilindaica convexa (11), tipo macho, com inteaposição entae as duas supeaficies de uma lamina (16) de coaaecção de toleaancia com ataito aeduzido, permitindo uma peafeita libeadade de aotação do apoio.(Ί, 2) that are coupled longitudinally to form the passage tunnel. The functioning of the set thus formed is ensured by the sharp positioning of the parts (1,2), by the configuration of the male-female joints, and by the special connection geometry, to the foundation, due to the existence in the lower zone of the passage of continuous concrete (3) leaning against a foundation executed in veoZccacó level of a cn situ support (4), with a concave semi-cylindrical formwork (7Z) female type. where the pieces (J, Z) go dry, they have the extremity of a convex semi-eilindaic foama (11), male type, with interposition between the two surfaces of a lamina (16) of coaaection of tolerance with reduced pressure, allowing a the freedom to adopt the support.

tnavamento entae as duas peças (1,2), ao seu nivel infeaioa, é asseguaado pela existência de um taavamento descontinuo (/9) entae as duas fundações (4, 5), betonada em conjunto com a aefeaida fundação.Floating then the two pieces (1,2), at their infidelity level, is ensured by the existence of a discontinuous topping (/ 9) between the two foundations (4, 5), concreted together with the solid foundation.

A betonagem das aefeaidas fundações (4,5) e executada em duas fases (4a, 5a) sendo a paimeiaa até ao nivel infeaioa do apoio paé-fabaicado (3) e a segunda (4b, 5b) ate ao topo do apoio paé-fabaicado (3).The concreting of the aefeaidas foundations (4,5) is carried out in two phases (4a, 5a) with the paimeiaa up to the level of the paab-based support (3) and the second (4b, 5b) up to the top of the pa- fabicated (3).

montaa a peça femea (7), faz-se deslizaa o apoio (3a) sobae amount the female part (7), the support (3a) is slid over the

Paaa se fundação encoste, (4a) no sentido do .inteaioa do tunel ate que a peça fémea (7) supeaioamente, na peça macho (Z).For foundation, lean (4a) towards the tunnel until the female part (7) suddenly, in the male part (Z).

A ligaçao entae peças peça (Z), onde existe inteaposição entae as (1,2), no seu topo, ê feita ataavés do apoio da uma supeaficie com foama semi-cilindaica convexa (J) de foama semi-cilinda ica côncava (7), com duas supeaficies de uma de toleaancia com ataito aeduzido, lamina (75) de coaaecção peamitindo uma peafeita libeadade de aotação do apoio paaa deslocamentos em sentido entae as peças (1,2) poa meio de descendente, e na ligação um paaafuso de foama ciaculaa (13),The connection between the pieces (Z), where there is interposition between the pieces (1,2), at the top, is made through the support of a surface with convex semi-cylindrical foama (J) of concave semi-cylindrical foama (7 ), with two tolerances of one of tolerance with reduced actuation, lamina (75) of coaection allowing for a perfect freedom of action of the support for displacements in the direction between the pieces (1,2) by means of descendant, and in the connection a foama ciaculaa (13),

-3paAAando atravéA de cavidadeA (9) exiAtenteA naA peçaA (1,2) fazendo-Aè o Aeu aperto do Zado exterior de cada peça (1,2) numa cavidade (8) com dimenAÕeA Auf icienteA para aZojar a cabeça do parafuAo, Aervindo também eAta cavidade [δ] para Aer preenchida com argamoAAa de retracção compenAada capaz de aderir fortemente ao betão e ao aço para a protecção doA parafuAOA. Para aAAegurar um bom funcionamento do conjunto faz-Ae o aperto ZongitudinaZ de todaA oa peçaA (/,2) que conAtituem o tuneZ, utiZizando para o efeito caboA de aço (14) embainhadoA num ZnvõZucro de PUC Aemi-rigido que contém no Aeu interior grafite, garantindo a protecção doA caboA de aço contra αά acçõeA agreAAivaA do meio exterior, Aendo eitcA caboA introduzido a atravéi de furoA (10) exÕAtenteA noA peçaA (1,2) e fixadoA com a coZocação de uma força de aperto noA auoa extremidadeA (14).-3paAaTing through cavity (9) existing in the piece (1,2) by tightening the outer surface of each piece (1,2) in a cavity (8) with sufficient dimension to accommodate the screw head, attaching also eAta cavity [δ] for Aer filled with compensated shrinkage clay capable of adhering strongly to concrete and steel for the protection of the screw. In order to ensure a good functioning of the set, the ZongitudinaZ clamping of the whole piece (/, 2) which make up the tuneZ is used, using the steel cable (14) sheathed in a ZnvõZucro of PEM Aemi-rigido that contains in the inner Aeu graphite, guaranteeing the protection of the steel cable against the unaffected action of the external environment, while the cable is inserted through a hole (10) exposed in the piece (1,2) and fixed using a clamping force at the end of the hole ( 14).

Claims

REIUWICAÇOES

1- Legacy process of pnê- ned parts for the execution of coAacZeAczaúo tunnels through the use of pneumatic parts with semi-conical cone (7, Z) and supporting parts (3a, 3b ), being the connection, between pieces (1,2), at the supple level, with the coupling of the pieces (1,2) through the support of the piece (2), where there is a surface with $ on every Convex convex (6) and outer part (I) of anemic iemc-cU.cndn.cca concave (7), with two entrances between a lamina (15) for connection of tapering with a zniZo neduced , penmíZindo ama pen ^ eiZa Libre of notation of the support for downward displacements, and Legation between the pieces (1,2) pon meco of a pana {, use of ^ cúncuLan (13), passing through the cavities (9) existing in the pieces (7,2) and making their appendage in a cavity (S) on the extenion side of each piece (1,2) and existence in the interior area of the passage of a continuous concrete support (3a, 3b) embedded in a foundation executed in situ (4a, 4b, 5a, 5b), with a concave semi-cylindrical nanhuna (12) where the piece (1,2) with the extnemity of ^ goes on a semi-circular convex (11), with intentions in between the two surfaces of a blade (16) for the connection of totenance with understated attentiveness, allowing for the limited freedom of notation of the support.

2- Connection process of pneed pieces supplied for the execution of passage tunnels, according to the antenion claim, cannulated by the Longitudinal apent of all the pieces (1,2) that make up the tunnel, using the steel cables effect (14) sheathed in a semi-rigid PVC Lnvãtacno that contains gna ^ ite in the sea intenion, gaining the pnotection of the steel cables containing the agness evasions of the extenion mecon, I intend these cables to be introducedA to the dc {year A (10) aciòtcnta na na piece (1,2) and {ixadoi with the application of a {ounce of accent at the ends of caboA (14).

3- PnectionAAO of the connection of the part pné- {abnicada for the execution of tunnels of paAagem, according to level 1, cannulated by the execution of the tunnel Aen initiated by the assembly of its part (1) and cornering and the pantln of this by the self-support of a road without the need for further scanning, by the act of assembling the part (1,2), which constitutes the tunnel, but still being supported by one successively on the road.

4- Start of connection of pne- nical part for the execution of pass tunnels, according to claim 1, channeled by the existence of a continuous lintel (19) that has an internal drainage {tunnel undulations (4,5 ) and to ensure its stability in terms of honorial displacement at the level of the undation.

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5- PnécAtion of the connection of the pné- part (provided for the execution of pass tunnels, according to claim 1, canonised after the concreting of the {undations, performed in situ (4,5) without being carried out in two months, a pimein (4a, 5a) up to the level of the pné- {abnegated support (3a, 3b) and in the second {ae (4b, 5b) to the top of the pné- {abnegated support (3a, 3b).

6- PnêaAaNiNg of the connection of the piece pne- {broken for the execution of pass tunnels, according to claim 1, cannulated with one of the supports (3a) sliding under the {undation (4a) for the support of the piece (1) of {onma Aemi-cUndnica concave [7), Aobne the piece (2) of i

^ aemc-ccZcnd / icc.a conuzxa (6), exiting a cavity (/ 7) of a tonicoconica which will receive a netpenable steel pen (7 5). by supporting the support (3a) while the Second Foundation Bridge (4b) is not concreted.