Method for erecting a transport structure and parts of a transport structure

Abstract

The invention relates to a method for erecting a section of a transport structure, the section comprising a first assembly formed of pipe sections, the first assembly being capable of being placed under low air pressure and a cabin being able to travel through the first assembly substantially without air friction, the method comprising: (a) erecting a lower structure comprising a first plurality of girders forming a first transport path and a plurality of platforms forming a service path, the erecting step comprising using a vehicle to transport the girders and platforms along the first transport path, position the girders and platforms, and return the vehicle along the service path; (b) using the vehicle to transport a pipe section along the first transport path, position the pipe section, and return the vehicle along the service path. The invention also relates to a section of a transport structure thereof.

Description

Technical Field

[0001] This invention relates to a method for erecting a transport structure comprising components formed of tubular sections capable of being placed under low air pressure, through which cabins can travel substantially without air friction. Such a transport system is commonly referred to as hyperloop technology. The invention also relates to a corresponding transport structure. Background Technology

[0002] Hyperloop technology is a proposed high-speed transportation system for both passenger and freight transport. This high-speed transport system is essentially a sealed tube system with low air pressure, through which cabins can travel with virtually no air resistance or air friction. The high-speed transport system has three main components: the tube, the cabin, and the station. The tube is a large, sealed, low-pressure system that can be built above, below, or on the ground. The high-speed transport system includes the necessary infrastructure to ensure levitation / suspension, propulsion, braking, etc. The vehicles operate within this controlled environment and are generally referred to as cabins. Cabins employ electrolevitation (electromagnetic or electric levitation) or aerodynamic levitation (using air bearings for gliding) and electromagnetic or aerodynamic propulsion to glide along fixed guide rails. The station is a facility where cabins can be started or stopped, and where passengers can board / disembark and cargo can be loaded / unloaded. A station is located at each end of the sealed tube system.

[0003] From an artist's perspective, the above-ground Hyperloop structure is often represented in the form of pipe sections, the ends of which are simply resting on regularly spaced piers. This design is very appealing, but it doesn't provide a full understanding of the significant challenges during the installation process. One of these challenges is that the pipe sections are massive pieces that cannot be easily transported to the construction site, especially in steep or inaccessible terrain, or where the Hyperloop route is far from existing roads. To avoid transporting the pipe sections, the use of mobile pipe-producing machinery (such as...) is specifically known from US9517901. Figure 9 The diagram shows pipe manufacturing and assembly on land, where the pipe production machine is operable to move on land and be guided along a construction route. Alternatively, mobile in-situ manufacturing systems (such as...) Figure 9The structure shown in Figure B) can be located at a single location to manufacture multiple pipe segments (e.g., fifty pipe segments) and then subsequently moved to a new location. In both cases, the Hyperloop route can only be built if mobile production machinery or mobile manufacturing systems can access the construction site. Furthermore, among other disadvantages, it is worth mentioning that energy supply can be challenging while moving along the construction route, and new electrical certifications may be required each time the machinery / system is moved. Summary of the Invention

[0004] Therefore, the object of the present invention is to overcome the shortcomings of existing methods and structures by providing a method for erecting ground transport structures, a method adapted to rugged terrain, and a method that makes the transport and assembly of different components of the structure easier.

[0005] For this purpose, a first aspect of the invention includes a method for erecting a portion of a transport structure, the portion including a first assembly formed of pipe sections, the first assembly being capable of being placed under low pressure, and a cabin being able to travel through the first assembly substantially without air friction, the method comprising:

[0006] -(a) Erecting a substructure comprising: a plurality of piers; a first plurality of beams formed by main beams, the first plurality of main beams being positioned on at least some of the piers and forming a first transport path extending from a first end portion of the substructure to a second end portion; and a plurality of platforms, the plurality of platforms being positioned on the piers or connected to the beams of the first transport path and forming a service path extending from the first end portion of the substructure to the second end portion, the erection steps comprising:

[0007] (i) Starting from the first end section, a vehicle is used to transport the nth beam among the first plurality of beams along a first transport path formed by the beams of the first plurality of beams that have been previously positioned, positioning the nth beam at its usage location, and causing the vehicle to return to the first end section of the substructure along the service path.

[0008] (ii) Starting from the first end section, a vehicle is used to transport the y-th platform among the multiple platforms along a first transport path formed by the beams of the first plurality of beams that have been previously positioned, positioning the y-th platform at its usage location, and causing the vehicle to return to the first end section of the substructure along the service path.

[0009] -(b) Using vehicles to transport the pipe sections in the first component formed by the pipe sections along the first transport path to the usage location of each pipe section, locating each pipe section, and returning the vehicles along the service path.

[0010] The method according to the invention may also have the following optional features, considered individually or in combination:

[0011] - The platform in the multiple platforms that form the service path is located on the pier.

[0012] - One of the platforms forming the service path connects to the main beam of the first transport path.

[0013] - The transport structure also includes a second component formed by pipe sections positioned on a first component formed by pipe sections, and wherein, in step b), the pipe sections in the second component formed by pipe sections are also transported and positioned to their respective usage locations along a first transport path by means of a vehicle.

[0014] - Each pipe section in the first assembly formed by pipe sections is connected to a pipe section in the second assembly formed by pipe sections before being transported.

[0015] - The erection step includes the step of erecting the pier before sub-step i).

[0016] - The main girder is positioned using a girder launcher crane supported by the substructure itself.

[0017] - The erection step includes an additional sub-step preceding sub-step i), in which a first segment of the substructure is erected at a reserve point. This first segment includes at least one pier, at least one of a first plurality of main beams, and at least one platform.

[0018] - The nth beam in the first plurality of beams is positioned after the beam forming the second end of the first transport path, and the yth platform is positioned after the platform forming the second end of the service path.

[0019] - In step b), the vehicle is fitted with a pipe section at the first end of the substructure.

[0020] The steps for erecting the xth segment do not include positioning the nth beam among the multiple beams.

[0021] -The method also includes the following sequential steps:

[0022] ○c) Asynchronously erecting a second plurality of main beams, the second plurality of main beams being positioned on at least some of the piers and forming a second transport path, the second transport path extending from the first end of the substructure to the second end alongside the first transport path, the asynchronous erection steps comprising: starting from the first end, using a vehicle to transport the nth main beam of the second plurality of main beams along the second transport path formed by the main beams of the previously positioned second plurality of main beams, positioning the nth main beam at its usage position, and causing the vehicle to return along the service path to the first end of the substructure.

[0023] ○d) Using a vehicle along a first or second transport path, transport the pipe sections in the second component formed by the pipe sections from the first end of the substructure to the usage location of each pipe section, locate each pipe section, and return the vehicle along the service path.

[0024] A second aspect of the invention includes a portion of a transport structure for enabling a cabin to move substantially without air friction within an assembly formed by tubular sections and placed under low pressure. This portion of the transport infrastructure includes:

[0025] - A substructure comprising: a plurality of piers; a first plurality of beams formed by main beams, the first plurality of main beams being positioned on at least some of the piers and forming a first transport path extending from a first end portion of the substructure to a second end portion; and a plurality of platforms, the plurality of platforms being positioned on the piers or connected to the main beams of the first transport path and forming a service path extending from the first end portion of the substructure to the second end portion.

[0026] - The superstructure includes a first component formed by a tube section positioned on a first transport path, the first component being capable of being placed under low pressure and allowing the cabin to circulate within the tube section with substantially no air friction.

[0027] The transport structure according to the invention may also have optional features listed below, either individually or in combination:

[0028] - The first transport path consists of a continuous track formed by the main beam.

[0029] - The first transport path consists of two continuous tracks formed by the main beam, which extend parallel to each other.

[0030] -The superstructure includes a second component formed by pipe sections positioned on a first component formed by pipe sections.

[0031] - The substructure does not include a second plurality of beams formed by beams positioned on at least some of the piers in the piers and forming a second transport path.

[0032] Clearly, this invention is based on the construction of a substructure formed by piers and beams, capable of supporting the transport of heavy components such as beams, platforms, or pipe sections, and which, once the superstructure formed by the pipe sections is positioned on the substructure, can support it. The substructure includes a circulation loop, allowing vehicles circulating along the already positioned portion of the substructure, starting from a reserve point, to transport each additional component of the transport structure to its location at the construction point and back to the reserve point without hindering other vehicles from transporting the next component to the construction point. Therefore, the transport structure can be easily constructed regardless of terrain.

[0033] Other features and advantages of the invention will be described in more detail in the following description. Attached Figure Description

[0034] The invention will be better understood by referring to the following figures and reading the following description, which is provided for illustrative purposes only and is in no way intended to be restrictive:

[0035] - Figure 1 This is a partial view of a transport structure according to a first variation of the present invention.

[0036] - Figure 2 This is a detailed view of a portion of the transport structure according to a second variation of the present invention.

[0037] - Figure 3 The diagram illustrates the erection of piers for a portion of the transport structure.

[0038] - Figure 4 The diagram illustrates the erection of the first section of the substructure of the transport structure.

[0039] - Figure 5 The illustration shows the vehicle positioned on the first section of the lower structure of the transport structure, where the main beam at the storage point is loaded.

[0040] - Figure 6 The diagram illustrates the transport of the main beam along the first transport path of the substructure to the construction site.

[0041] - Figure 7 The diagram illustrates the positioning of the main beam at the construction point.

[0042] - Figure 8 The diagram illustrates the positioning of the platform at the construction point.

[0043] - Figure 9 The illustration shows the vehicle positioned on the first section of the lower structure of the transport structure, where the storage section is loaded onto the pipeline section at the storage point.

[0044] - Figure 10The diagram illustrates the transport of the pipe section along the first transport path of the substructure to the construction site.

[0045] - Figure 11 The diagram illustrates the location of the pipeline section at the construction point.

[0046] - Figure 12 The diagram illustrates the transport of the pipe section along the first transport path of the substructure to the construction site.

[0047] - Figure 13 This is an overall view of a portion of the transportation structure under construction. Detailed Implementation

[0048] It should be noted that the spatial relative terms used in this application, such as "lower," "below," "inner," "inward," "outer," and "outward," refer to the position and orientation of different components of the transport structure when the transport structure has been erected. The terms "upstream" and "downstream" used in this application refer to the direction of assembly starting from the storage point.

[0049] Reference Figure 1 and Figure 2 According to the present invention, part 1 of the transport structure firstly includes a lower structure 2, which includes: a plurality of piers 3; a first plurality of beams 4 formed by beams 6, the first plurality of beams 4 being positioned on at least a portion of the piers (i.e., positioned on at least some of the piers) and forming a first transport path 7 extending from a first end portion of the lower structure to a second end portion; and a plurality of platforms 8, the plurality of platforms 8 being positioned on the piers or connected to the beams of the first transport path and forming a service path 9 extending from the first end portion of the lower structure to the second end portion.

[0050] according to Figure 1 and Figure 2 The illustrated embodiment of the invention has a lower structure with only one first transport path 7 and one service path 9.

[0051] The transport structure comprises multiple segments, preferably at least three segments. The segments are defined by the length of the main beams. The segments are preferably matched to the distance between two consecutive piers along the longitudinal axis X of the transport structure segment.

[0052] Pier 3 is an upright support for a structure or superstructure, such as an arch or bridging member. Pier 3 supports the superstructure and transfers the load of the superstructure to the foundation. The shape of the piers according to the invention is not particularly limited, as long as these piers can support the aforementioned first transport path and optionally the service path.

[0053] according to Figure 1The first variant illustrated is a frame pier, which consists of two or more columnar members supporting a pier cap. The pier extends substantially in a plane perpendicular to the route, i.e., perpendicular to the length of the main beam.

[0054] According to a second variation (not shown), the pier is V-shaped. A V-shaped pier extends essentially in a plane perpendicular to the route, i.e., perpendicular to the length of the main girder. The pier comprises two outwardly extending inclined arms. The pier may also include a pier cap in the form of a horizontal beam connecting the two arms. This pier cap provides additional support for the main girder and better distributes the load from the main girder to the pier.

[0055] Other shapes, such as Y-shaped, X-shaped, H-shaped, hammer-shaped, cantilevered, trestle-type, solid, and simple column-shaped piers, are also possible.

[0056] The piers are preferably spaced substantially regularly along the longitudinal axis X of the transport structure.

[0057] The lower structure 2 of the transport structure 1 according to the invention further includes a first plurality of beams 4 formed by beams 6, the first plurality of beams 4 being positioned on at least some of the piers 3 and forming a first transport path 7 extending from a first end portion of the lower structure to a second end portion.

[0058] The main beam (6) is a supporting beam used in construction. The main beam can be made of steel or concrete, or it can be a composite structure. The main beam can be in the form of an I-beam cross-section, formed by two load-bearing flanges separated by a stabilizing web. The main beam can also be in the form of multiple longitudinal members connected by transverse members. Figure 1 and Figure 2 In the illustrated variant, the main beam is a box girder, that is, a beam forming a closed tube with multiple walls. A significant advantage of the box girder is that electrical wiring can be located internally.

[0059] Preferably, each main beam 6 extends from one pier to an adjacent pier. Specifically, a first end of the main beam rests on a given pier, and a second end of the main beam rests on an adjacent pier along the longitudinal axis X of the transport route or part of the transport structure. Thus, the main beams can be easily installed by simply positioning them on the piers. Alternatively, the main beams can extend on more than two piers.

[0060] A first plurality of beams 4, formed by beams 6, are positioned along the longitudinal axis of a portion of the transport route or transport structure to form a first transport path 7. The transport path refers to at least one continuous track designed to support the transport of heavy components and vehicles, such as beams, platforms, or pipe sections, and designed to support the superstructure once it is positioned on the transport path. For clarity, the transport path is temporary; it only allows the transport of components during the erection phase. Once the components of a pipe section have been positioned on the transport path, the latter ceases to be a path. The transport path extends from a first longitudinal end of the substructure to a second longitudinal end of the substructure, regardless of the length of the substructure.

[0061] according to Figure 1 The illustrated first variation of the transport path, the first transport path 7, consists of a single continuous track formed by beams. In other words, all the beams 6 of the first plurality of beams 4 are positioned sequentially and continuously along the longitudinal axis X of the transport structure. In this case, the beams are large enough to allow vehicles to circulate on them. The transport path can be a substantially flat metal or concrete surface, preferably the upper surface of the beams. The transport path can also be a railway line that is part of the upper surface of the beams.

[0062] according to Figure 2 The second variation of the illustrated transport path, transport path 7, consists of two continuous tracks formed by beams 6, extending parallel to each other. In other words, half of the first plurality of beams 4 are positioned successively and continuously along the longitudinal axis of the transport structure, and these half-beams are positioned successively and continuously and parallel to the first half-beams. In this case, the beams are not large enough to allow vehicles to circulate on them, but the two continuous tracks are spaced apart so that vehicles can circulate with their inner wheels on the inner track and their outer wheels on the outer track. The track beams may be part of the upper surface of the beams, such that the two continuous tracks form a railway line.

[0063] Optionally, supports are positioned between the pier and the main beam. Supports are devices that support the main beam and transfer loads and movements from the main beam and superstructure to the substructure and foundation. Supports allow controlled movement and reduce the stresses involved.

[0064] During the construction phase, vehicles circling the already positioned components of the substructure can easily transport each additional element of the transport structure to its location thanks to the first plurality of beams 4 formed by the beams 6. Access to and from the ground along the construction route is no longer necessary. This advantage will be further detailed in the description of the erection method. During operation, the first plurality of beams support the tube sections and contribute to the straightness of the tube section components. This straightness is crucial for the smooth movement of the compartment within the tube. Furthermore, the combination of the beams and the tube sections acts as a beam, which significantly increases the structure's lateral torsional buckling.

[0065] The lower structure 2 of the transport structure according to the invention further includes a plurality of platforms 8 positioned along the longitudinal axis X and forming a service path 9. A service path refers to at least one continuous track designed to bear vehicle traffic. The service path differs from the transport path in that it is not designed to bear the transport of heavy components such as beams, platforms, or pipe sections, and it is not designed to support the superstructure. The service path extends from a first longitudinal end of the lower structure to a second longitudinal end of the lower structure, regardless of the length of the lower structure. For clarity, the service path is located above the ground. The service path extends substantially parallel to the first transport path.

[0066] The platform is a lightweight structure suitable for vehicular traffic. The platform is preferably made of steel. The platform preferably includes a traffic deck, i.e., a surface suitable for vehicular traffic, which may be reinforced underneath by longitudinal and / or lateral stiffeners. These stiffeners increase the structural rigidity of the traffic deck. For safety reasons, the traffic deck may also include safety rails along the longitudinal edges of the traffic deck. The traffic deck, stiffeners, and safety rails are preferably made of steel. The traffic deck is preferably a perforated surface, such as perforated steel sheet or metal grating.

[0067] There are different ways to connect platform 8 to the rest of the lower structure 2. According to... Figure 1 and Figure 2 The illustrated platform is positioned in a first variation, with platform 8 supported by pier 3. Preferably, the longitudinal ends of the platform are supported by piers. In this case, the platform preferably has the same length as the main beam.

[0068] Therefore, the pier may include a support region 19, which may be, for example, part of the pier's own shape or added to an anchoring point of the pier. Figure 1 and Figure 2In the illustrated case, the support area 19 takes the form of a protrusion extending over a portion of the pier cap. In this case, the platform of the service path, particularly the longitudinal end of the platform, can simply rest on the protrusion. Alternatively, the platform of the service path can rest on other parts of the pier, such as on the horizontal beam of the H-shaped pier where applicable, or it can be anchored to a column.

[0069] According to a second variation of the platform positioning (not shown), the platform is supported by a main beam. In this case, the platform can have the same length as the main beam or it can have a shorter length; preferably, the length of the platform is a divisor of the length of the main beam.

[0070] During the construction phase, vehicles that have already moved components to the construction point can return to the reserve point via service route 9 without hindering other vehicles from transporting the next component to the construction point. This expedites the transport of components to the construction point and thus shortens the erection phase. This advantage will be described in further detail when the erection method is described. During operation, the service route can be advantageously used for maintenance, inspection, and / or as an escape route. The service route can be permanent or temporary.

[0071] Reference Figure 1 and Figure 2 The transport structure according to the invention also includes an upper structure 11, which includes a first component 12 formed by a pipe section 14 and positioned on a first transport path. This first component can be placed under low pressure and allows the compartment to circulate substantially without air friction within the pipe section. "Low pressure" means a pressure below atmospheric pressure, preferably below or equal to 10 kPa, more preferably between 10 Pa and 10 kPa.

[0072] The design of pipe section 14 is not limited, as long as pipe section 14 can be directly or indirectly connected to each other along the longitudinal axis through its longitudinal ends to form the assembly as described above. In particular, the cross-section of the pipe is not limited. The cross-section of the pipe can be a circular cross-section or a polygonal cross-section. In practice, the ability of the assembly to be placed under low pressure is given by the characteristics of the pipe section walls and the characteristics of the connection between the pipe section and the pumping equipment. In particular, the pipe section walls must be airtight. Different ways of making the pipe walls airtight are well known, and those skilled in the art will know how to select the characteristics of the walls in each particular case. For example, the pipe can be a metal pipe made of welded plate or a metal structure covered by an airtight membrane. In addition, the connection between two pipe sections must be airtight. The airtightness of the connection can be provided in particular by welding, by adding a component such as an elastomer between the bolted or clamped pipe sections, or by means of an expansion joint. Those skilled in the art know how to make the connection airtight and will adapt the connection to each particular case. Furthermore, the pumping equipment must be precisely sized to allow low air pressure to be achieved and maintained within the components of the pipe section, while also taking into account air leakage during operation. Those skilled in the art know how to do this and will adapt the pumping equipment to each specific situation.

[0073] In practice, the ability of the component to allow the cabin to circulate within the tube section with virtually no air friction is provided by infrastructure positioned within the tube section, specifically providing levitation / suspension, propulsion, braking, etc. Such infrastructure is already well known, and those skilled in the art will know how to adapt the infrastructure to each particular situation.

[0074] Preferably, the tube section includes legs distributed along the length of the section, and is adapted to allow the tube section to stand independently on the substructure with its legs. During the structural design phase, the number of legs and their positions on the tube section can be optimized.

[0075] The pipe section is preferably made of steel. Steel has the advantages of being lightweight, easy to vacuum seal, and recyclable.

[0076] Pipe sections may be connected to external and / or internal components along their length and / or at their ends. These components can be very diverse. Examples of such components include reinforcements, photovoltaic panels, sensors, etc.

[0077] According to a first embodiment of the superstructure, the superstructure has only a first component 12 formed by pipe sections 14, which is positioned on a lower structure having only a first transport path 7. Figure 1In the illustrated case, the first transport path 7 supporting a single component formed by a pipe section is composed of a first plurality of beams 4 formed by beams 6 arranged in a single continuous track. Alternatively, and as shown... Figure 2 As shown, the first transport path 7 that supports a single component formed by a pipe section consists of a first plurality of beams 4 formed by beams 6 arranged in two continuous tracks formed by beams 6, which extend parallel to each other.

[0078] According to this first embodiment, the design and location of the piers, beams, and platforms are not limited. Variations of the aforementioned piers, beams, and platforms can be combined with this embodiment of the superstructure.

[0079] According to a second embodiment of the superstructure, the superstructure includes a first assembly 12 formed by pipe sections 14 and a second assembly 13 formed by pipe sections 14. Each assembly formed by the pipe sections can be placed under low pressure and allows the compartment to circulate within the pipe sections with substantially no air friction. The features and variations of the pipe sections in the first assembly described in detail above also apply to the pipe sections in the second assembly. The pipe sections in the first assembly and the pipe sections in the second assembly can be identical to facilitate logistics.

[0080] According to a variation of this embodiment, the substructure supporting the first and second components formed by pipe sections has only a first transport path 7. In this case, the second component 13 formed by pipe section 14 is positioned on the first component 12 formed by pipe section 14. Specifically, each pipe section in the second component formed by pipe sections is positioned on a pipe section in the first component formed by pipe sections. This positioning limits the footprint of the transport structure. This positioning also reduces the number of switches and facilitates surface use, particularly on surfaces biased towards the station. Optionally, each pipe section in the first component formed by pipe sections is connected to a pipe section in the second component formed by pipe sections before being transported to the construction point. The connection can be accomplished using lateral connectors and / or structures surrounding the two pipe sections. In this case, the pipe sections in the first component and the pipe sections in the second component are transported simultaneously along the first transport path 7, as will be described in further detail when describing the erection method. This speeds up the transport of the components to the construction point and thereby shortens the erection phase. According to this variant, the first transport path can be composed of a first plurality of beams 4 formed by beams 6, which are arranged indiscriminately in a single continuous track formed by the beams or in two continuous tracks formed by the beams 6, which extend parallel to each other.

[0081] According to this second embodiment of the superstructure, the design and location of the piers, beams, and platforms are unrestricted. Variations of the aforementioned piers, beams, and platforms can be combined with this embodiment of the superstructure.

[0082] According to a first embodiment of the transport structure, the lower structure 2 of the transport structure 1 does not include a second plurality of beams formed by beams 6 that are positioned on at least some of the piers in the piers and form a second transport path.

[0083] According to a second embodiment of the transport structure (not shown):

[0084] The lower structure 2 of the transport structure portion 1 also includes a second plurality of beams formed by beams 6, the second plurality of beams being positioned on at least some of the piers and forming a second transport path, the second transport path extending from the first end portion of the lower structure to the second end portion alongside the first transport path, and

[0085] The superstructure 11 also includes a second component formed by the tube section 14 and positioned on the second transport path. The second component can be placed under low pressure and allows the cabin to circulate in the tube section with virtually no air friction.

[0086] The limitations and variations detailed regarding the first transport route apply to the second transport route. The limitations and variations detailed regarding the first plurality of beams apply to the second plurality of beams. The beams in the first plurality of beams and the beams in the second plurality of beams may be the same to facilitate logistics.

[0087] "Next to" refers to two transport routes that are substantially parallel to each other and extend adjacent to each other. Transport routes are not limited to those located at the same elevation and / or strictly parallel. The space between the first and second transport routes and / or the elevations of the first and second transport routes can be adjusted according to the terrain.

[0088] The characteristics and variations of the pipe sections in the first component described above also apply to the pipe sections in the second component. The pipe sections in the first component and the pipe sections in the second component can be identical to facilitate logistics.

[0089] Reference Figures 3 to 13 The method for erecting part 1 of a transport structure according to the present invention will now be described. In general, the method includes a first step of erecting the lower structure 2 and a second step of erecting the upper structure 11. The step of erecting the lower structure will be described first.

[0090] exist Figure 3In the first step of erecting the substructure 2, as illustrated, the piers 3 of the transport structure portion 1 are erected. These piers can be erected using any suitable method, such as using panel formwork. The pier erection method includes constructing pier foundations according to the requirements of the ground properties. This step can be performed before, or at least partially concurrently with, the step of positioning the main beam 6. In other words, the piers can be erected before the main beam positioning begins, for example, several weeks in advance. This specifically provides time for concrete drying and soil compaction. Alternatively, some piers may still be under construction when the main beam positioning begins on the first erected pier.

[0091] Since the area required for erecting piers is limited and only light vehicles (bulldozers, concrete mixers) are needed, piers are preferably erected by ground access to the construction point of each pier.

[0092] In the second step of erecting the lower structure 2, the main beam 6 and platform 8 of the transport structure part 1 are erected.

[0093] As described above, the erection of the main beams and platform begins at storage point 15, where at least a portion of the components of the transport structure are stored. Depending on the ease of transporting the components to the storage point, some components may be manufactured in a manufacturing facility at the storage point. This may be the case for large components such as main beams and / or pipe sections. Manufacturing some components at the storage point minimizes the erection time at the construction point and allows for better control over the quality of the manufactured components.

[0094] Reserve point 15 is preferably located at a future point of the station, particularly a passenger station and / or freight station. This limits the land area required for the construction phase. It also limits civil engineering works. In particular, the civil engineering works completed for establishing the reserve point and its optional manufacturing facilities can be used for erecting the station. The reserve point is preferably located at ground level.

[0095] like Figure 4 As shown, the first sub-step of the second step of erecting the main beam 6 and platform 8 is carried out at the reserve point 15. This sub-step includes erecting at least one main beam 6 and at least one platform 8, which form at least a portion of the first section of the substructure, at the reserve point. Specifically, this sub-step includes positioning one of the first main beams onto at least one pier. This positioning is preferably accomplished using a crane 16, which can pick up components from the reserve point and move these components to the pier. The assembly sequence of the main beam and platform can vary depending on the design of the substructure and, in particular, how the platform is connected to the rest of the substructure.

[0096] According to the first variation, the first section of the substructure includes a single pier. This is especially true when the reserve point is located on higher ground. Then, the first end of the first main beam can rest on the higher ground, while the second end of the first main beam can rest on the downwardly positioned pier. In this case, the first sub-step involves positioning one of the first plurality of main beams between the higher ground and the pier.

[0097] according to Figure 4 The second variation illustrated includes a substructure with a first section comprising two piers. This is particularly true when the reserve point is located on generally flat ground. The first end of the first main beam can then rest on the first pier, and the second end of the first main beam can rest on the second pier. In this case, the first sub-step involves positioning one of the first plurality of main beams on the two piers.

[0098] This first sub-step may include erecting other sections or portions of sections of the substructure at the reserve point. The number of sections or portions of sections erected at the reserve point is limited by the crane's ability to position components on the piers from the reserve point.

[0099] Once the main beams and platform of the first section of the substructure have been erected, the first section includes a first end portion adjacent to the storage point and a second end portion located at the opposite end of the first end portion. The first end portion of the first section corresponds to the first end portion of the substructure of the portion of the transport structure erected according to the invention. Therefore, the position of the first end portion of the substructure of the portion of the transport structure erected according to the invention will not change over time during the erection of the portion of the transport structure. As for the second end portion of the first section, it corresponds to the second end portion of the substructure under construction, provided that no other section of the substructure is erected downstream of the first section. In other words, the position of the second end portion of the substructure under construction will change over time each time a new section is erected downstream of an already erected section of the transport structure.

[0100] Because of the components constituting the substructure, vehicle 17 can circulate on a first transport path 7 formed by at least one of the first plurality of main beams 4 and a service path 9 formed by at least one platform 8. Specifically, the vehicle moving the component to be positioned along the construction route can circulate on the first transport path, that is, circulate from the first end of the substructure under construction to the second end. Once the component reaches its usage position, the vehicle can return to the first end via the service path.

[0101] Therefore, in the second sub-step of erecting the main beam 6 and platform 8, the main beams and platform of the first plurality of main beams in another section of the substructure can be erected as detailed below. For simplicity, this section will be referred to as the "second section" below, assuming that only the main beams and platform of the first plurality of main beams in the first section have been erected at the reserve point.

[0102] The second section of the substructure includes at least one beam 6 from a plurality of beams 4, at least one platform 8 from a plurality of platforms, and at least one pier 3 of the substructure.

[0103] As explained above regarding the erection of piers, additional piers were erected at least downstream of the first section of the substructure.

[0104] Vehicle 17, suitable for transporting heavy components, is positioned on a first section of the substructure, specifically on a first transport path 7, and more specifically on a first beam 6 of a plurality of first main beams 4. The vehicle can be lifted by a crane 16, or its position can be reached by means of an access ramp or any other suitable equipment. The type of vehicle is not limited. The vehicle type can be a wheeled vehicle, such as a truck or a train locomotive. Depending on the type of vehicle, the components to be transported can be loaded onto one vehicle or several vehicles simultaneously, or the vehicles can be simply connected to the components, as is possible in the case of a train locomotive used for transporting components equipped with railway wheels. In this specification, the terms "assembly" and "pairing" are used equivalently to refer to the loading of a vehicle with a component and the connection of a vehicle with a component. The term "disconnection" is used equivalently to refer to unloading a component from a vehicle and disconnecting the vehicle from the component.

[0105] Some vehicles are equipped with beams and platforms among the first plurality of main beams of the second section of the substructure. Specifically, the vehicle is equipped with at least one main beam 6 among the first plurality of main beams 4, and the vehicle is equipped with at least one platform 8. Components can be transported from a storage point on the first section of the substructure, or can be lifted from the storage point to the first section of the substructure by a crane. In the first case, the components can be transported by the vehicle itself. In the second case, the vehicle can be positioned and then assembled.

[0106] These components are then transported by vehicle from the first end of the under-construction substructure to the second end adjacent to their intended use location. Specifically:

[0107] - Transport at least one of the first plurality of main beams 4 along a first transport path 7 formed by the main beams of the first plurality of main beams positioned on the first segment of the substructure.

[0108] - Transport at least one platform 8 along the first transport route.

[0109] The order in which components are paired with the vehicle and transported to the second end is unrestricted. Furthermore, some components may be transported to the second end while others remain assembled on the vehicle.

[0110] Once the component has been delivered to the second end of the substructure under construction, it is positioned in its service location, i.e., its service location within the substructure. Specifically:

[0111] At least one of the first plurality of main beams 4 is positioned downstream of the first transport path 7. Specifically, the at least one main beam 6 is positioned after the main beam forming the second end of the substructure on the first transport path. More specifically, the at least one main beam 6 is positioned in a straight line along the longitudinal axis X with the main beam 4 forming the second end of the first transport path 7. Even more specifically, the at least one main beam 6 is positioned such that the first end of the beam rests on a pier forming the second end of the first section of the substructure, and the second end of the beam rests on at least one additional pier erected downstream of the first section of the substructure. The at least one of the first plurality of main beams is preferably positioned using a crane 18, more preferably using a main beam releaser crane supported by the substructure itself.

[0112] At least one platform 8 is positioned downstream of the service path 9. Specifically, the at least one platform 8 is positioned after the platform forming the second end of the substructure of the service path. More specifically, the at least one platform 8 is positioned in a straight line along the longitudinal axis X with the platform forming the second end of the service path. Even more specifically, the at least one platform 8 is positioned such that the first end of the platform rests on a pier forming the second end of the first section of the substructure, and the second end of the platform rests on an additional pier erected downstream of the first section of the substructure. The at least one platform is preferably positioned using a crane, more preferably using a girder launcher crane.

[0113] It is advantageous to use a crane 18 supported by a substructure. This crane 18 further limits the footprint required for erection by eliminating the need for ground preparation for access to and from the construction site and for crane ground preparation. It also makes the erection method more independent of the terrain and topographical roughness.

[0114] Once the component is positioned, the corresponding detached vehicle can return along the service path to the first end of the substructure. Specifically:

[0115] - A vehicle 17 detached from at least one of the first plurality of beams 4 moves from the first transport path 7 to the service path 9. If the service path is not at the same height as the first transport path, the vehicle can be lifted and placed on the service path using a crane. Preferably, a beam releaser crane is used to lift the vehicle.

[0116] - Vehicles 17 detached from at least one platform 8 move from the first transport path 7 to the service path 9. If the service path is not at the same height as the first transport path, the vehicles can be lifted and placed on the service path using a crane. Preferably, a beam-operated crane is used to lift the vehicles.

[0117] The order in which components are positioned is not restricted. Furthermore, some components may be positioned while others are still being paired with the vehicle or transported to the second end. Preferably, at least one platform 8 is positioned first, so that vehicles detached from at least one beam 6 of the first plurality of beams 4 can be more easily transferred to the service path.

[0118] Once the main beams and platforms of the first plurality of main beams in the second section of the substructure have been erected as described above, the main beams and platforms of the first plurality of main beams in the other sections of the substructure can be erected according to a similar process and as described below regarding the erection of the main beams and platforms of the first plurality of main beams in the xth section of the substructure.

[0119] The x-th segment of the substructure includes: at least the n-th main beam 6 among the first plurality of main beams 4, at least the y-th platform 8 among the plurality of platforms, and at least the z-th pier 3 of the substructure. By default, x, y, z, and n are different. When each segment of the substructure includes a single main beam from the first plurality of main beams and a single platform, x equals n and y. In this case, the n-th main beam among the first plurality of main beams is also the x-th main beam, and the y-th platform among the plurality of platforms is also the x-th platform. When the first segment includes 2 piers, and the first transport path 7 is composed of a single continuous track formed by the main beams, and each segment of the substructure other than the first segment includes a single pier, z equals n+1.

[0120] At least the z-th pier 3 has been erected downstream of the (x-1)th first section.

[0121] like Figure 5 As illustrated, vehicle 17, having returned to the first end of the lower structure after detaching from the main beams and platforms of the preceding segment of the lower structure, is equipped with a main beam and platform from the first plurality of main beams of the x-th segment of the lower structure. Specifically, the vehicle is equipped with the nth main beam from the first plurality of main beams, and the vehicle is equipped with the yth platform from the plurality of platforms. If the x-th segment includes additional main beams and / or platforms from the first plurality of main beams, the additional main beams and / or platforms are paired with the vehicle in a similar manner.

[0122] like Figure 6As illustrated, starting from the first end of the substructure, a vehicle transports beam 6 and platform 8, among the first plurality of beams in the xth segment of the substructure, from the first end of the substructure under construction to the second end adjacent to its usage location. Specifically:

[0123] - The nth beam 6 in the first plurality of beams 4 is transported along the first transport path 7 formed by the beams in the first plurality of beams that were previously positioned. Specifically, the nth beam 6 is transported along the first transport path 7 formed by the (n-1) beams in the first plurality of beams that were previously positioned.

[0124] - The yth platform 8 of the multiple platforms is transported along the first transport path 7 formed by the beams of the first multiple beams that were previously positioned.

[0125] If section x includes an additional beam and / or platform among the first plurality of beams, the additional beam and / or platform are transported in a similar manner. The order in which components are paired with the vehicle and transported to the second end section is not restricted. Furthermore, some components may be transported to the second end section while others remain paired with the vehicle.

[0126] like Figure 7 and Figure 8 As illustrated, once the component is transported to the second end of the substructure under construction, it will be positioned in its intended use location. Specifically:

[0127] - The nth beam 6 of the first plurality of beams is positioned downstream of the first transport path 7. Specifically, the nth beam 6 is positioned after the beam forming the second end of the substructure under construction in the first transport path. More specifically, the nth beam 6 is positioned in a straight line along the longitudinal axis with the (n-1)th beam of the first transport path. Even more specifically, the nth beam 6 is positioned such that the first end of the nth beam rests on the pier forming the second end (the (z-1)th pier), and the second end of the nth beam rests on the zth pier erected downstream of the substructure. The nth beam of the first plurality of beams is preferably positioned by a crane 18, more preferably by a beam releaser crane supported by the substructure itself.

[0128] - The y-th platform 8 is located downstream of the service path. Specifically, the y-th platform 8 is located after the (y-1)-th platform of the service path, that is, after the platform forming the second end of the substructure under construction. More specifically, the y-th platform 8 is positioned so that it is aligned with the platform forming the second end of the service path along the longitudinal axis. Even more specifically, the y-th platform 8 is positioned such that the first end of the y-th platform rests on the pier forming the second end (the (z-1)-th pier), and the second end of the y-th platform rests on the z-th pier erected downstream of the substructure. The y-th platform is preferably positioned using a crane 18, more preferably using a beam-laying crane supported by the substructure itself.

[0129] like Figure 7 and Figure 8 As illustrated, once the components of the xth segment of the lower structure are positioned, the corresponding detached vehicle can return along the service path to the first end of the lower structure. Specifically:

[0130] - The vehicle that detaches from the nth beam in the first plurality of beams moves from the first transport path 7 to the service path 9.

[0131] - Vehicles detached from the y-th platform move from the first transport path 7 to the service path 9.

[0132] If the service path is not at the same height as the first transport path, a crane can be used to lift the vehicle and place it on the service path. Preferably, a beam-operated crane is used to lift the vehicle.

[0133] If the x-th segment includes an additional beam and / or platform among the first plurality of beams, the additional beam and / or platform are positioned in a similar manner, and the corresponding vehicle returns to the first end segment in a similar manner. The positioning order of the components of the x-th segment is not limited. Furthermore, some components of the x-th segment may be positioned, while other components of the x-th segment or subsequent segments are paired with the vehicle or transported to the second end segment. Preferably, the y-th platform 8 is positioned first, making it easier for the vehicle transporting the nth beam among the first plurality of beams to transfer from the first transport path to the service path.

[0134] Optionally, the erection step does not include: simultaneously transporting and positioning the nth beam of the second plurality of beams and positioning it next to the nth beam of the first plurality of beams in its usage position. In other words, the step of erecting the beams and platform of the xth segment does not include positioning the nth beam of the second plurality of beams. However, in other words, for a transport path consisting of a single continuous track formed by beams, the positioning of the (n+1)th beam of the first plurality of beams is completed before positioning the optional nth beam of the second plurality of beams next to the nth beam of the first plurality of beams in its usage position. For a transport path consisting of two continuous tracks formed by beams, the positioning of the (n+2)th beam of the first plurality of beams is completed before positioning the optional nth beam of the second plurality of beams next to the nth beam of the first plurality of beams in its usage position.

[0135] At the end of the substructure erection step, the last of the first plurality of main beams is positioned on the last pier of the substructure. These piers may be adjacent to or shared with the second part of the transport structure, which is being erected or is being erected as an extension of the relevant part of the transport structure along the longitudinal axis of the transport route. The second part of the transport structure is erected from a second reserve point, possibly located downstream of the relevant part at a future station. The second part of the transport structure is constructed by erecting the substructure of the second part after the substructure of the relevant part has been erected. In other words, each part is constructed from one reserve point to another, and at some point, the two parts are connected. Therefore, the last of the first plurality of main beams of the relevant part is adjacent to the last of the first plurality of main beams of the second part, ensuring continuity in the first transport path.

[0136] Once all sections of the lower structure of the transport structure have been at least partially assembled, the upper structure can be erected.

[0137] Overall, and as Figures 9 to 13 As illustrated, the superstructure assembly is accomplished by transporting pipe sections 14 along the first transport path 7 to the usage location of each pipe section by a vehicle, positioning each pipe section, and then returning the vehicle along the service path 9. Since the pipe sections are positioned on the substructure and obstruct the transport path, the superstructure assembly is performed in reverse order of the substructure assembly. In other words, the pipe sections are first positioned at the second end of the substructure, and then one pipe section is positioned in front of another pipe section, i.e., upstream of another pipe section, in the direction of the first end of the substructure.

[0138] The pipe section is stored at storage point 15 and transported from that location. Therefore, vehicle 17 is equipped with the pipe section 14 at the first end of the substructure and transports the pipe section 14 along the first transport path 7 from that first end to its usage location. Then, the vehicle disengages and returns to the first end of the substructure along the service path 7.

[0139] Specifically, in Figures 9 to 11 In the first step illustrated, the first pipe section 14 is transported by vehicle 17 to the second end of the substructure 2. The vehicle detaches from the first pipe section and can return along service path 9. The first pipe section 14 is positioned on the last main beam 6 forming the second end of the substructure. Detaching the vehicle from the pipe section and positioning the pipe section can be accomplished using a crane, possibly a main beam releaser crane. If the second part of the transport structure is adjacent to the last main beam of the substructure, the first pipe section can be connected to the pipe section of the second part, preferably in an airtight manner.

[0140] exist Figure 12 In the second step illustrated, the second pipe section 14 is transported by vehicle 17 to the first pipe section. The vehicle disengages from the second pipe section and can return along service path 9. The second pipe section is positioned adjacent to the first pipe section and upstream along the longitudinal axis X. The first and second sections can then be connected to each other, preferably in an airtight manner.

[0141] like Figure 13 As illustrated, the subsequent pipe sections are transported and positioned in a similar manner until the last pipe section is positioned at the first end of the substructure.

[0142] In the case where the superstructure includes a first component 12 formed of pipe sections 14 and a second component 13 formed of pipe sections 14 positioned on the first component, the pipe sections in these two components can be transported individually along the first transport path 7. At their point of use, the pipe section in the first component is first positioned on the first transport path 7, and then the pipe section in the second component is positioned on the pipe section in the first component. Alternatively, each pipe section in the first component formed of pipe sections is connected at a storage location to a pipe section in the second component formed of pipe sections, and then the connected pipe sections are transported along the first transport path. The pipe sections in the first component and the pipe sections in the second component can be identical to facilitate logistics.

[0143] According to one embodiment of the method for erecting a portion 1 of a transport structure, the method further includes an additional step in which a second plurality of beams are assembled onto the portion 1 of the transport structure in an interleaved manner relative to the assembly of a first plurality of beams 4 formed by beams 6 and a plurality of platforms 8. "Interleaved" or "asynchronous" means that the positioning of beams in the first plurality of beams of a given segment of the transport structure comprising two plurality of beams begins before the beams in the second plurality of beams of the preceding segment have been positioned. Specifically, for a transport path 7 consisting of a single continuous track formed by beams, the positioning of at least the (n+1)th beam of the first plurality of beams is completed before the nth beam of the second plurality of beams is positioned next to the nth beam of the first plurality of beams in its usage position. For a transport path consisting of two continuous tracks formed by beams, the positioning of at least the (n+2)th beam of the first plurality of beams is completed before the nth beam of the second plurality of beams is positioned next to the nth beam of the first plurality of beams in its usage position.

[0144] In one variant, the additional steps begin only after the first component 12, formed by the pipe section 14, has been erected. This typically occurs when deciding to increase the transport capacity of an existing transport structure.

[0145] According to another variation, after the first plurality of beams 4 formed by beams 6 and the plurality of platforms 8 of the transport structure have been erected, and before the pipe sections in the first assembly 12 formed by pipe sections 14 are transported on the transport structure, the additional steps begin. This asynchronous assembly significantly allows at least some of the pipe sections to be stored on the first transport path once the additional steps are completed, while the beams of the second plurality of beams are transported. This helps to minimize the size of the storage points and speeds up the assembly of the pipe sections, as they are stored closer to their place of use.

[0146] Specifically, the method includes the following sequential steps:

[0147] - Asynchronous erection of a second plurality of main beams 6, the second plurality of main beams 6 being positioned on at least some of the piers and forming a second transport path, the second transport path extending from the first end of the substructure to the second end alongside the first transport path, the asynchronous erection steps comprising: starting from the first end, transporting the nth main beam of the second plurality of main beams by vehicle 17 along the second transport path formed by the main beams of the second plurality of main beams previously positioned, positioning the nth main beam at its usage position, and returning the vehicle along the service path to the first end of the substructure.

[0148] - Using vehicle 17, the pipe section 14 of the second component formed by the pipe section is transported from the first end of the substructure to the usage location of each pipe section along the first transport path or the second transport path, the pipe section is positioned, and the vehicle returns along the service path.

[0149] The method for transporting and positioning the main beams in the second plurality of main beams is similar to that for transporting and positioning the main beams in the first plurality of main beams. The details and variations of the erection method for the first plurality of main beams provided above apply here.

[0150] Specifically, in the first sub-step, at least one of the second plurality of beams is positioned next to the first of the plurality of beams on at least one pier of the first segment of the substructure.

[0151] Specifically, in the second sub-step, a vehicle positioned on a second transport path formed by at least one already positioned main beam is equipped with at least one of a second plurality of main beams. The latter is then transported along the second transport path formed by the main beams of the second plurality of main beams positioned on the first section of the substructure. Then, at least one of the second plurality of main beams 6 is further positioned downstream of the second transport path. Specifically, at least one of the second plurality of main beams 6 is positioned after the main beam forming the second end of the second transport path under construction. In other words, at least one of the second plurality of main beams 6 is positioned next to the nth main beam of the first plurality of main beams. Finally, the vehicle 17, detached from at least one of the second plurality of main beams 6, moves from the second transport path to the service path 9 and returns along the service path to the first end of the substructure.

[0152] Once the first of the second or so main beams has been erected as described above, the other main beams can be erected one after another in a similar process.

[0153] Once all the main beams of the second set of beams have been assembled, the second assembly formed by the pipe sections can be erected.

[0154] The method for transporting and positioning the pipe sections of the second component is similar to that for transporting and positioning the pipe sections of the first component. The details and variations of the erection method for the first component formed by the pipe sections provided above apply here.

[0155] Specifically, according to a variation where the additional steps only begin after the first component 12, formed by the pipe section 14, has been erected, the first pipe section 14 of the second component is transported by vehicle 17 along the second transport path to the second end of the second transport path, which is its usage position. The vehicle disengages from the first pipe section and can return along the service path 9. The first pipe section 14 is positioned on the last beam 6 of the second transport path. The second pipe section 14 is transported by vehicle 17 along the second transport path to the first pipe section. The vehicle disengages from the second pipe section and can return along the service path 9. The first and second sections can then be connected to each other, preferably in an airtight manner. The next pipe section of the second component is transported and positioned in a similar manner until the last pipe section is positioned at the first end of the substructure.

[0156] Specifically, according to a variation where the additional step begins before the pipe sections in the first component 12 formed by pipe sections 14 are transported on a portion of the transport structure, the pipe sections of the second component can be transported along either a first or second transport path, while the pipe sections of the first component are transported along the first transport path as previously described. Preferably, the pipe sections of the second component are transported along the second transport path, while the pipe sections of the first component are transported along the first transport path to expedite assembly. If some pipe sections of the first component are already stored on the first transport path, these pipe sections can be paired with the vehicle at their storage location, transported and positioned along the remainder of the first transport path, while the pipe sections of the second component are transported and positioned along the second transport path.

Claims

1. A method for erecting a portion (1) of a transport structure, said portion (1) comprising a first assembly (12) formed of a pipe section (14), the first assembly (12) being capable of being placed under low pressure and a cabin being capable of traveling through the first assembly (12) substantially without air friction, said method comprising: - (a) Erecting a substructure (2) comprising: a plurality of piers (3); a first plurality of beams (4) formed by beams (6), the first plurality of beams (4) being positioned on at least some of the piers and forming a first transport path (7) extending from a first end portion of the substructure to a second end portion; and a plurality of platforms (8), the plurality of platforms (8) being positioned on the piers or connected to the beams of the first transport path and forming a service path (9) extending from the first end portion of the substructure to the second end portion, the erection steps comprising: (i) Starting from the first end portion, a vehicle (17) is used to transport the nth beam (6) of the first plurality of beams along the first transport path (7) formed by the beams of the first plurality of beams that have been previously positioned, positioning the nth beam at its use position, and causing the vehicle to return to the first end portion of the lower structure along the service path (9). (ii) Starting from the first end portion, a vehicle (17) is used to transport the y-th platform (8) of the plurality of platforms along the first transport path (7) formed by the beams of the first plurality of beams that have been previously positioned, positioning the y-th platform at its usage location, and causing the vehicle to return to the first end portion of the lower structure along the service path (9). - (b) Using a vehicle (17) along the first transport path (7) to transport the pipe section (14) in the first component (12) formed by the pipe section to the usage location of each pipe section, locate each pipe section, and return the vehicle along the service path.

2. The method according to claim 1, wherein, Platform (8) of the plurality of platforms forming the service path (9) is positioned on the pier (3).

3. The method according to claim 1, wherein, Platform (8) of the plurality of platforms forming the service path (9) is connected to the beam (6) of the first transport path (7).

4. The method according to claim 1, wherein, The transport structure also includes a second component formed by pipe sections (14) positioned on the first component (12) formed by pipe sections, and wherein, in step b), the pipe sections (14) in the second component formed by pipe sections are also transported along the first transport path (7) by means of a vehicle (17) to the use location of each pipe section and positioned.

5. The method according to claim 4, wherein, Each pipe section (14) in the first component (12) formed by pipe sections is connected to a pipe section (14) in the second component formed by pipe sections before being transported.

6. The method according to any one of the preceding claims, wherein, The erection step includes the step of erecting the pier before sub-step i).

7. The method according to any one of claims 1 to 5, wherein, The main beam is positioned by a main beam placement crane supported by the substructure itself.

8. The method according to any one of claims 1 to 5, wherein, The erection step includes an additional sub-step preceding sub-step i), in which at least one beam of the first plurality of beams of the first segment of the substructure and at least one platform are erected at a reserve point.

9. The method according to any one of claims 1 to 5, wherein, The nth beam (6) of the first plurality of beams (4) is located after the beam forming the second end of the first transport path (7), and the yth platform (8) is located after the platform forming the second end of the service path (9).

10. The method according to any one of claims 1 to 5, wherein, In step b), the vehicle (17) is fitted with the pipe section (14) at the first end of the lower structure.

11. A portion (1) of a transport structure for enabling a compartment to travel substantially without air friction within an assembly formed by tube sections under low pressure, said portion of the transport structure comprising: - A substructure (2) comprising: a plurality of piers (3); a first plurality of beams (4) formed by beams (6), the first plurality of beams (4) being positioned on at least some of the piers and forming a first transport path (7) extending from a first end portion of the substructure to a second end portion; and a plurality of platforms (8), the plurality of platforms (8) being positioned on the piers or connected to the beams of the first transport path and forming a service path (9) extending from the first end portion of the substructure to the second end portion. - Upper structure (11), the upper structure (11) includes a first component (12) formed by a pipe section (14) positioned on the first transport path, the first component being able to be placed under low pressure and being able to allow the cabin to circulate in the pipe section with substantially no air friction; The first transport path (7) includes at least one continuous track, which is designed to bear the transport of heavy components and vehicles of beams, platforms or pipe sections, and is designed to support the superstructure once the superstructure is positioned on the first transport path. The service path (9) includes at least one continuous track designed to bear vehicle traffic, the service path (9) is not designed to bear the transport of heavy components such as beams, platforms or pipe sections, and is not designed to support the superstructure, and the service path (9) is configured such that once an element is positioned, the corresponding detached vehicle can return along the service path to the first end of the substructure.

12. A portion of the transport structure according to claim 11, wherein, The first transport path (7) includes a continuous track formed by the beam (6).

13. A portion of the transport structure according to claim 11, wherein, The first transport path (7) includes two continuous tracks formed by a beam (6), which extend parallel to each other.

14. A portion of the transport structure according to any one of claims 11 to 13, wherein, The superstructure includes a second component formed by a pipe section (14) positioned on the first component (12) formed by the pipe section.

15. A portion of the transport structure according to any one of claims 11 to 13, wherein, The substructure does not include a second plurality of beams formed by beams (6) that are positioned on at least some of the piers in the piers and form a second transport path.

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