JP6672545B2 - Removal member removal method and member replacement method - Google Patents

Description

  The present invention relates to a technique for repairing members (hereinafter, simply referred to as “components”) such as floor slabs and girders constituting a road bridge, and more specifically, a construction yard set using one lane. The present invention relates to a method of unloading a removed member while delivering the removed structural member and a method of updating a member for installing a new member after the removal.

  It has been pointed out that the construction infrastructure that has been intensively developed during the period of rapid economic growth (hereinafter referred to as “construction infrastructure”) is already considerably aging. In 2014, the "Proposals for the Full-Scale Implementation of Measures for Aging Roads (Council for Social Capital Development)" was compiled, and citing the example of the Sasago Tunnel in 2012, "In the near future, human life and society, including the collapse of bridges It will cause a catastrophic situation with the equipment, "he warned, and emphasizes the importance of maintaining the construction infrastructure.

  Against this background, the government has promulgated a ministerial ordinance that partially revises the Road Law Enforcement Regulations. Inspection procedures are being formulated. This periodic inspection procedure covers bridges with a length of 2.0 m or more, which are said to be about 700,000 bridges. The first inspection is performed within two years after the start of operation, and the periodic inspection is performed every five years thereafter. I have to do that.

  On the other hand, the road bridge specification, which is the standard for designing road bridges, has been reviewed from time to time since the 1939 edition was issued, and especially after the Hyogoken-Nanbu Earthquake, major revisions were made. ing. As a result, even in the case of a bridge which had a sufficient strength in the past, there are not a few cases where the strength is insufficient according to current design standards.

  As described above, bridges are often reinforced or renovated at present for two reasons: aging and insufficient strength. However, current road bridges secure a large amount of traffic, that is, support the movement of people and the distribution industry, and their use cannot be stopped easily. In particular, viaducts on motorways, such as expressways, allow tens of thousands of vehicles to pass through the city each day.If not, the economic loss would be immeasurable, and emergency patients would have to be treated. If it could not be transported, it could be a social problem.

  Therefore, in the case of constructing a road bridge in operation, it is a fact that traffic is regulated at night to secure at least daytime traffic. In addition, in the case of a road bridge having two upper and lower lanes, it is common to open the two lanes of the down lane as alternate traffic (up and down lanes), and to perform construction using one lane of the up lane. However, in recent years, the number of cases where it is required to open more lanes has increased, and it has been requested that two down lanes be fully open, one out of two lanes always open, and that only the remaining one lane be constructed. It may be done. That is, under the most severe conditions, only one lane out of the four lanes in the upper and lower lanes must be regulated, and one lane must be opened during the day (that is, construction only at night).

  Opening the adjacent lane to the public and regulating only the remaining one lane requires various measures because of various restrictions. For example, in Patent Literature 1, one of the two lanes (up and down) is a primary construction section and the other lane is a secondary construction section. It proposes a method of replacing the existing. In order to enable construction within one lane, an erection device will be installed. This erection device is composed of a pair of portal legs arranged at intervals and a track beam bridged between them, and a hanging means for gripping a concrete slab or the like is provided on the track beam section. Is to move.

JP-A-2016-98489

  By the way, it is possible to point out a problem that the construction vehicle obstructs general traffic even if the construction is performed by restricting only one lane out of the two lanes going up and the remaining lanes are opened to the general public. FIGS. 36 and 37 show a road bridge having two lanes both up and down, with one lane (upper in the figure) of the two up lanes being open to the general and the other lane (lower in the figure) being regulated. It is a top view showing the situation where construction is performed. In this figure, a predetermined section of one lane on the construction side is set as a construction area (hereinafter referred to as “construction yard”), and the construction yard is indicated by a broken line. Of course, the construction yard is set so as to include a range (hereinafter, referred to as “construction section”) in which the components (road deck, girder, etc.) of the road bridge are updated.

  In FIG. 36A, the lorry Ta is waiting in front of the construction section in order to carry out a removed component member (hereinafter, referred to as a “removed member”). Since the lorry Ta leaves the construction yard without entering the adjacent open lane, no other construction vehicles are arranged in front of the lorry Ta in the construction yard. Then, as shown in FIG. 36 (b), the lorry Ta equipped with the removal member exits the construction yard using only the construction lane (the lower lane in the figure) (that is, without entering the open lane). . However, as shown in FIG. 36 (b), the following lorry Tb changes lanes from the open lane and enters the construction yard from the side (so-called sideways), or changes lanes from the open lane. After stopping in front of the construction yard, they will enter the construction yard while retreating. Normally, a temporary enclosure is installed around the construction yard, so when the lorry Tb enters sideways, the temporary enclosure is removed, and the guidance staff stops the vehicle in the open lane and then removes the lorry Tb. I have to guide.

  In order to prevent lateral insertion as shown in FIG. 36, it is conceivable that a required number (two in this figure) of construction vehicles are arranged in the construction yard in advance as shown in FIG. In FIG. 37 (a), the lorry Ta is in front of the construction section, and the lorry Tb is waiting in front of the lorry Ta in order to carry out the removed components. However, as shown in FIG. 37 (b), the lorry Ta equipped with the removal member cannot leave the construction yard using only the construction lane (the lower lane in the figure) due to the lorry Tb becoming an obstacle. Therefore, the lorry Ta exits from the side outside the construction yard across the temporary enclosure (so-called sideways). That is, in the case of FIG. 37, although the crossing-in can be prevented, the crossing-out is forced, and also the guide man stops the vehicle in the open lane, which results in the obstruction of the general traffic.

  An object of the present invention is to solve the problems of the prior art, that is, a removal member that restricts only one lane out of two lanes and that allows a construction vehicle to perform construction without obstructing general traffic. An object of the present invention is to provide a carrying-out method and a member updating method.

  According to the present invention, a delivery lifter is installed in the construction yard, and a “car group” composed of a plurality of lorries arranged in a row is arranged in the construction yard, and the car group is removed in the construction yard. The present invention has been made by paying attention to the point that the members are carried out of the construction yard while being delivered, and is an invention made based on an unprecedented idea.

  The removal member carrying out method of the present invention uses a delivery lifter installed in a construction yard (a predetermined section set using one lane of a road bridge), and uses a vehicle group (a plurality of vehicles arranged in a line). This is a method of carrying out the removal member using a lorry, and includes a removal member temporary loading step, a removal member lifting step, a removal member main loading step, and a construction yard exit step. Here, the removal member is a component of the road bridge removed in the construction section in the construction yard, and the delivery lifter is a traffic space (a truck can pass below the load while the load is lifted. A lift capable of lifting and lowering the load of a lorry parked in this traffic space. Note that the delivery lifter and the vehicle row group are arranged in a region in the construction yard ahead of the construction section. In the removal member temporary loading process, the removal member is mounted near the construction section on the trailing vehicle (the lorry located at the end of the group of vehicles), and in the removal member lifting process, the rear vehicle with the removal member mounted is delivered. The vehicle moves in the construction yard to the position of the lifter, and the delivery lifter lifts the removal member of the rear vehicle. In addition, in the full loading process of the removed members, the trains move in the construction yard while maintaining the order of the trucks until the leading vehicle (the truck at the forefront of the trains) comes to the position of the delivery lifter. At the same time, the removal member lifted by the delivery lifter is mounted on the leading vehicle, and in the construction yard exit process, the leading vehicle equipped with the removal member exits the construction yard.

According to the removal member carrying out method of the present invention, a delivery lifter is installed at a location of n (n is an integer of 2 or more) or more in a construction yard, and n removal members are mounted on a trailing vehicle in a removal member temporary loading process. It can also be a method. In the removal unit Seitz up step in the case, each of the transfer lifter is lifting one removal member, the removal members present loading process, equipped with a removal member that each delivery lifter has lifting the leading vehicle, construction In the yard exit process, the leading vehicle equipped with n removal members exits outside the construction yard.

  The removal member carrying-out method of the present invention may be a method using a vehicle group composed of three or more lorries. In this case, if one lorry exits the construction yard during the construction yard exit process, the lorries remaining in the construction yard form a convoy group, and this convoy group (the reduced number of The foremost lorry in the group is newly designated as the leading vehicle, and the carry-out cycle (from the temporary loading of the removed members to the exit of the construction yard) is repeated.

  The removal member unloading method of the present invention may be a method further including a vehicle row group entry step and a delivery lifter installation step performed before the removal member temporary loading step. In the vehicle row group entry process in this case, the vehicle row group including the lorry equipped with the delivery lifter entered the construction yard and was arranged at a predetermined position, and in the delivery lifter installation process, the Place the delivery lifter in place.

  The removal member unloading method of the present invention may be a method further including a delivery lifter unloading step. In the delivery lifter unloading process, if only the same number of trucks (including the trailing vehicle) of the trucks in the convoy group remain in the construction yard, they will remain in the construction yard. The lorry equipped with the delivery lifter will be mounted on the lorry, and the lorry equipped with the delivery lifter will leave the construction yard.

  The member renewal method of the present invention is a method of renewing a component in a construction section using a delivery lifter and a vehicle row group, and includes a removing step, a temporary loading step of a removed member, a lifting step of a removed member, and a removal of a removed member. This is a method including a process, a new member lifting process, a new member loading process, and a new member installation process. Here, the delivery lifter has a traffic space (a space in which a cargo truck can pass below the cargo in a state where the cargo is lifted) and can lift and lower the cargo of the truck stopped in the traffic space. It is a heavy lifting machine. The row of vehicles is composed of a plurality of lorries arranged in a line, and the leading vehicle located at the beginning, the trailing vehicle located at the rear, and the intermediate vehicle (newly installed member) located between the leading vehicle and the trailing vehicle. With). Note that the delivery lifter and the vehicle row group are arranged in a region in the construction yard ahead of the construction section. In the removal process, the components of the construction section are removed.In the removal member lifting process, the removal member is mounted on the trailing vehicle near the construction section, and in the removal member unloading process, the car is moved until the leading vehicle comes to the delivery lifter position. The row group moves inside the construction yard while maintaining the order of the lorries, and the removal member lifted by the delivery lifter is mounted on the leading vehicle, and the leading vehicle equipped with the removal member leaves the construction yard. Also, in the new member lifting process, the intermediate vehicle equipped with the new member moves in the construction yard to the position of the delivery lifter, and the delivery lifter lifts the new member. The row of vehicles (excluding the leading vehicle) will move in the construction yard while maintaining the order of the lorry until it reaches the position, and the new members lifted by the delivery lifter will be mounted on the trailing vehicle. Then, in the new member installation step, the rear vehicle on which the new member is mounted moves in the front construction yard to the construction section, and the new member is installed at a predetermined position in the construction section.

  The member renewal method of the present invention uses two delivery lifters (a first delivery lifter and a second delivery lifter) and includes a new and old member lifting process instead of the removal member lifting process and the newly provided member lifting process. It can also be a method. In the new and old member lifting process, the rear vehicle equipped with the removal member moves in the construction yard to the position of the first delivery lifter, and the first delivery lifter lifts the removal member of the rear vehicle and removes the new member. The mounted intermediate vehicle moves in the construction yard to the position of the second delivery lifter, and the second delivery lifter lifts the new member. In the removal member removal process in this case, the leading vehicle moved in the construction yard to the position of the first delivery lifter, and the removal member lifted by the first delivery lifter was mounted on the leading vehicle and the removal member was mounted. The leading vehicle leaves the construction yard. In the new member loading step, the trailing vehicle moves in the construction yard to the position of the second delivery lifter, and the new member lifted by the second delivery lifter is mounted on the trailing vehicle.

  The member renewal method of the present invention uses two delivery lifters (a first delivery lifter and a second delivery lifter), and includes a removal process, a first removal member temporary loading process, a removal member lifting process, and a 1. A method including a removal member unloading process, a second removal member temporary loading process, a new and old member lifting process, a new and old member reloading process, a second removal member unloading process, a new member loading process, and a new member installation process. Can also. In the first removing member temporary loading step, the two removed members removed in the removing step are mounted on the trailing vehicle near the construction section, and in the removing member lifting step, the trailing vehicle mounting the removed member is the first delivery lifter. , The first delivery lifter lifts one removal member of the trailing vehicle, and further moves in the construction yard to the second delivery lifter, and the second delivery lifter Lift the remaining one removal member of the rear vehicle. In the first removing member unloading step, the leading vehicle moves in the construction yard to the position of the first delivery lifter and the second delivery lifter, and the first delivery lifter and the second delivery lifter lift and remove the leading vehicle. The leading vehicle with the members mounted on the leading vehicle and with the two removed members retreated out of the construction yard, and in the second removed member temporary loading process, after the first removed member temporary loading process, again to the trailing vehicle The two removed members removed in the removal process will be mounted near the construction section. In the new and old member lifting process, the rear vehicle equipped with the removal member moves in the construction yard to the position of the first delivery lifter, and the first delivery lifter lifts one removal member of the rear vehicle and the new member. Moves in the construction yard to the position of the second delivery lifter, and the second delivery lifter lifts one new member. In the new and old member reloading process, the rear vehicle equipped with one removal member is moved in the construction yard to the position of the second delivery lifter, and the new member of the second delivery lifter is mounted on the rear vehicle. The lifting member is lifted by the second delivery lifter, and the intermediate vehicle equipped with one new member is moved in the construction yard to the position of the first delivery lifter, and the removal member of the first delivery lifter is removed. Is mounted on the intermediate vehicle, and the first delivery lifter lifts a new member of the intermediate vehicle. In the second removal member unloading process, the intermediate vehicle equipped with one removal member moves in the construction yard to the position of the second delivery lifter, and the removal member lifted by the second delivery lifter becomes the leading vehicle. An intermediate vehicle equipped with the two removal members will exit the construction yard. Then, in the new member loading process, the rear vehicle equipped with one new member moves in the construction yard to the position of the first delivery lifter, and the new member lifted by the first delivery lifter is mounted on the rear vehicle. In the new member installation step, the rear vehicle having the two new members mounted thereon moves in the construction yard to the construction section and places the new member at a predetermined position in the construction section.

  The member renewal method of the present invention can be a method using a first lifting device and a second lifting device installed near the construction section. The first lifting device and the second lifting device are configured to include a lifter and a lifting mechanism. This lifter is configured to include four pillars that support a load and can expand and contract vertically, and has a traffic space (a space in which a lorry can pass below the load while the load is lifted). It is a lifting machine. One hanging load mechanism has a hanging rope, a hanging jig fixed to the tip of the hanging rope, and power means. Note that the first lifting device and the second lifting device are respectively disposed so as to sandwich the removing member before and after. In this case, when the removing member is mounted on the rear vehicle, the lifting rope is wound by the power means of the first lifting device and the second lifting device, whereby the removing member gripped by the lifting jig. Hoist. Next, in a state where the removing member is lifted by the power means of the first lifting device, the power means of the second lifting device lowers the suspension rope to lower the removing member to below the first lifting device. Move. Then, the removing member is suspended from the trailing vehicle by the first lifting device.

  The member renewal method of the present invention may be a method of performing a new member installation step using a first lifting device and a second lifting device installed near a construction section. Note that the first lifting device is disposed at a planned position of the new member, and the second lifting device is disposed at a position away from the first lifting device. In the new member installation step in this case, the new members held by the hanging jig are lifted from the trailing vehicle by hoisting the respective suspension ropes by the power means of the first lifting device and the second lifting device. After that, the trailing vehicle moves out of the construction section. Next, in a state where the new member is lifted by the power means of the first lifting device, the power member of the second lifting device winds down the suspension rope to move the new member to below the first lifting device. Move. Then, the new member is suspended at the planned position by the first lifting device.

  The member renewal method of the present invention can be a method using a lifting device installed near the construction section. This lifting device includes a lifter, which is a lifting machine having a traffic space (a space in which a cargo vehicle can pass below the load while the load is lifted), an installation girder, and a lifting mechanism. The lifting mechanism has a mechanism in which the lifting mechanism traverses along the erection girder bridged between two or more lifters, and a removal member or a new member held by the lifting jig when the lifting jig of the lifting mechanism moves up and down. Has a mechanism for lifting and suspending. In this case, when lifting or lowering the removed member or the newly installed member in the construction section, the lifting member is used.

The removed member carrying out method and the member updating method according to the present invention have the following effects.
(1) Since it can be carried out with only one lane regulation, for example, in the case of four lanes in the upper and lower lanes, the two lanes of the down lane can be fully opened and one lane out of the two lanes can always be opened.
(2) Since it is not necessary to enter or exit the construction vehicle, it does not hinder ordinary vehicles passing through the adjacent lane even temporarily, thereby contributing to an improvement in safety.
(3) Since the delivery lifter can use a normal lifter provided in the market, it can be implemented without any trouble and cost.
(4) Even if the bridge has a width of about one lane, the member can be updated by using the present invention.
(5) Since vehicles do not enter and exit the construction yard behind the construction section, vehicles for transporting materials and equipment and vehicles for workers can be stopped, and work efficiency is high.
(6) Since there is no entry or exit of the vehicle in the rear yard of the construction section, the cutting work for removing the component members can be performed safely.

FIG. 4 is a plan view showing a situation in which the removal member is carried out or a part of a road bridge is updated by implementing the present invention. (A) is a perspective view showing a delivery lifter using a conventional lifter, and (b) is a front view showing a delivery lifter using a conventional lifter. The step figure showing the situation where the outrigger type delivery lifter mounted on the trailer is installed independently. The flowchart which shows the flow of the main process of the removal member removal method of this invention. FIG. 9 is a first step diagram showing main steps of the removal member carrying-out method of the present invention when one delivery lifter is installed. The 2nd step figure which shows the main process of the removal member carrying-out method of this invention at the time of installing one lifter for delivery. FIG. 13 is a third step diagram showing main steps of the removal member carrying-out method of the present invention when one delivery lifter is installed. FIG. 14 is a fourth step diagram showing main steps of the removal member carrying-out method of the present invention when one delivery lifter is installed. FIG. 9 is a first step diagram showing main steps of the removal member carrying-out method of the present invention when two delivery lifters are installed. The 2nd step figure which shows the main process of the removal member carrying-out method of this invention when two delivery lifters are installed. FIG. 13 is a third step diagram showing main steps of the removal member carrying-out method of the present invention when two delivery lifters are installed. The flowchart which shows the flow of the main process of the member update method of a 1st case. FIG. 9 is a first step diagram showing main steps of a member updating method of a first case. FIG. 11 is a second step diagram showing main steps of the member updating method of the first case. FIG. 10 is a third step diagram showing main steps of the member updating method of the first case. FIG. 14 is a fourth step diagram showing main steps of the member updating method of the first case. FIG. 15 is a fifth step diagram showing main steps of the member updating method of the first case. The flowchart which shows the flow of the main process of the member update method of a 2nd case. FIG. 9 is a first step diagram showing main steps of a member updating method of a second case. FIG. 13 is a second step diagram showing main steps of the member updating method of the second case. FIG. 13 is a third step diagram showing main steps of the member updating method of the second case. FIG. 14 is a fourth step diagram showing main steps of the member updating method of the second case. FIG. 18 is a fifth step diagram showing main steps of the member updating method of the second case. The flowchart which shows the flow of the main process of the member update method of a 3rd case. FIG. 13 is a first step diagram showing main steps of a member updating method of a third case. FIG. 13 is a second step diagram showing main steps of a member updating method of a third case. FIG. 13 is a third step diagram showing main steps of the member updating method of the third case. FIG. 16 is a fourth step diagram showing main steps of the member updating method of the third case. FIG. 15 is a fifth step diagram showing main steps of the member updating method of the third case. The step figure showing the main steps of the construction method of the construction girder type lifting device. (A) is a side view which shows the construction girder which consists of a main body girder and a rail girder, (b) is a front view which shows the construction girder type lifting apparatus in the state which removed the removal member. (A) is a step diagram showing a step of lifting a removal member by a erected girder type lifting device constructed in a construction section, and (b) is a step of mounting the removed member lifted by the erection girder type lifting device on a rear vehicle. FIG. (A) is a step diagram showing a process of hoisting a new member mounted on a rear vehicle by an erecting girder lifting device constructed in the construction section, and (b) is a diagram showing a new member lifted by the erecting girder type hoisting device. The step figure showing the process of installing in a planned position. (A) is a step diagram showing a step of temporarily placing a removed member behind the construction section, and (b) is a step diagram showing a step of temporarily placing a new member behind the construction section. The step figure which shows the process of mounting a removal member in a tail vehicle by a winch type lifting device. (A) is a plan view showing a state in which a lorry is waiting in front of the construction section to carry out the removed member, and (b) is a lorry equipped with the removed member exits the construction yard and follows a lorry. FIG. 2 is a plan view showing a situation where a vehicle enters a construction yard sideways. (A) is a plan view showing a situation in which two trucks are arranged in a construction yard to carry out a removal member, and (b) is a situation in which a truck equipped with a removal member leaves the construction yard sideways. FIG.

  An example of a form of a removed member carrying out method and a member updating method of the present invention will be described with reference to the drawings.

1. Definitions In describing an example of an embodiment of the present invention, first, definitions of terms used herein are shown.

(Components)
The removal member carrying out method of the present invention is a method of removing concrete slabs and steel slabs constituting a road bridge, or members such as a main girder and a horizontal girder and carrying them out, and refers to these members constituting a road bridge. Are collectively referred to herein simply as “components”. The constituent members can be made of various materials such as steel, concrete, and FRP (Fiber Reinforced Plastics). That is, the material of the constituent members is not particularly limited in the present invention. Further, the member renewal method of the present invention is a method of removing a constituent member and installing a new constituent member after the removal (hereinafter, removing and installing is referred to as “renewal”), and is removed here for convenience. The removed component is referred to as a “removed member”, and the newly installed component is referred to as a “newly provided member”.

(Construction yard and construction section)
FIG. 1 is a plan view showing a situation in which a removal member is carried out or a part of a road bridge is renewed by implementing the present invention. A range indicated by a broken line in this drawing is a range for construction regulated to carry out the present invention, and this range is referred to as “construction yard 100” here. The construction yard 100 is set in a predetermined extension section using one lane of the road bridge. Note that “using one lane” means that no other lane is used. In addition to the case where the construction yard 100 is set only for the lane, the side area (road shoulder) The construction yard 100 is also set for a range including the center zone, the side zone, the wall railing, the ground cover, and the like. For example, in the case of a road bridge having two upper and lower lanes as shown in FIG. 1, the construction yard 100 is set using only one lane (lower lane in the figure) in the upward direction. Therefore, both the down lane and the two lanes can be open to the general public at all times, and the up lane can also be open to the general lane at all times. In addition, a section in which a component is removed or a section in which a component is updated (removed to installed) is referred to as a “construction section 110” here. Of course, the construction yard 100 is set so as to include the construction section 110 within the range, and the construction section 110 is set so as to be located behind the construction yard 100 (closer to the end point in FIG. 1). The construction section is a section of one lane that is divided in the road extension direction (that is, the bridge axis direction), but may be a section that is further divided in the road width direction (that is, the direction perpendicular to the bridge axis).

(Vehicle group)
Vehicles, such as trucks and trailers, on which loading members and new members can be mounted on a carrier, are referred to here as "lorries" .A group of vehicles consisting of multiple trucks arranged in a row is referred to as a "car". Column group 200 ". In addition, the frontmost truck among the plurality of trucks forming the row group 200 is particularly referred to as a "leading vehicle 310", and the rearmost truck is particularly referred to as a "tailing vehicle 320". And Further, when the row of vehicles 200 is composed of three or more trucks, a truck located between the leading vehicle 310 and the trailing vehicle 320 is particularly referred to as an “intermediate vehicle 330”. Note that the “front” and “rear” described here are based on the traveling direction originally set in the lane, and when the construction yard 100 is set in the up lane, the starting side is “front”. When the end point side is “rear” and the construction yard 100 is set in the down lane, the end point side is “front” and the starting point side is “rear”.

(Delivery lifter)
As shown in FIG. 1, a lifter that is arranged in a region in the construction yard 100 and ahead of the construction section 110 is herein referred to as a “delivery lifter 400”. As the delivery lifter 400, a conventional lifter that is distributed in the market (sold and rented) can be used.

  2A and 2B are views showing a delivery lifter 400 using a conventional lifter, wherein FIG. 2A is a perspective view and FIG. 2B is a front view. As shown in FIG. 2A, the delivery lifter 400 includes four columns 410 and a gantry 420. Each of these four columns 410 is formed of a plurality (three in the figure) of divided bodies, and has a structure in which an upper divided body can accommodate a lower divided body. By using hydraulic pressure or the like, the lower divided body can be taken in and out of the upper divided body, that is, the four columns 410 can be expanded and contracted vertically (that is, jack-up and jack-down). . Also, as shown in FIG. 2B, the delivery lifter 400 is a portal-type lifting machine in a front view, and a space where a lorry can pass below the load while the load is lifted (hereinafter, referred to as “the lifter”). Passing space 440 ”).

  Since the gantry 420 is connected to the four columns 410 and is connected to the uppermost divided body, the gantry 420 also moves up and down as the column 410 moves up and down. In addition, as shown in FIG. 2B, a suspension lock 430 is attached to the lower surface of the gantry 420. The suspending and locking member 430 is a jig capable of gripping a removed member or a newly provided member, and for example, a suspending hook can be used. In addition, the gantry 420 may include two connecting beams, and the two connecting beams may be configured to be able to expand and contract to the left and right. This is the same structure as the conventional lifter, in which two of the four columns 410 are connected by one connecting beam, and the connecting beam expands and contracts in the horizontal direction (left and right) by hydraulic pressure or the like. . Of course, with the expansion and contraction of the connecting beam, the column 410 connected to it also expands and contracts left and right.

  When a delivery lifter 400 (hereinafter, referred to as an “outrigger delivery lifter 400R”) using a lifter in which a connecting beam expands and contracts to the left and right is adopted, the delivery lifter 400 can be installed and removed very easily, which is preferable. Becomes FIG. 3 is a step diagram showing a situation in which the outrigger type delivery lifter 400R mounted on the trailer Tr is independently installed. As shown in FIG. 3A, the outrigger-type delivery lifter 400R is placed on a receiving stand installed on the bed of the trailer Tr, and is carried into a predetermined position in the construction yard 100. When the trailer Tr stops at the predetermined position, as shown in FIG. 3 (b), the connecting beam 440 is extended left and right (up and down in the figure) until it comes to the outside of the loading platform while being placed on the receiving platform. Then, with the connecting beam 440 extended left and right, as shown in FIG. 3 (c), the four columns 410 are extended downward until the lower ends thereof touch the road surface. As a result, the outrigger-type delivery lifter 400R is Be independent on the road. When the outrigger-type delivery lifter 400R becomes independent, the trailer Tr moves from below the outrigger-type delivery lifter 400R. When the outrigger type delivery lifter 400R is removed and carried out, the steps shown in FIG. 3 may be performed in the reverse order (FIG. 3 (c) → (a)).

  As shown in FIG. 2, in the conventional lifter, the suspension lock 430 is fixed to the lower surface of the gantry 420, and the suspension lock 430 itself moves up and down independently (ie, approaches and separates from the gantry 420). Can not do. In other words, the hanging member 430 only grips the removal member or the newly installed member, and the four pillars 410 move up and down (that is, the gantry 420 moves up and down), so that the removing member gripped by the hanging member 430. Or new members are lifted or lowered. Instead of the conventional lifter, a new lifting device having a lifting mechanism installed on the conventional lifter can be used as the delivery lifter 400. This hanging load mechanism has a hanging rope, a hanging jig fixed to the tip of the hanging rope, and power means, and is a device for unloading such as a so-called winch or hoist. The lifting mechanism can be installed on the lifter by fixing the power means that is the main body (power section) of the lifting mechanism to, for example, the gantry 420 or the like. If this new lifting device is used, the lifting jig moves up and down independently of the gantry 420 without raising and lowering the four columns 410, so that the removal member or the newly installed member can be lifted or lowered. .

(Construction Department lifting machine)
The lifting machine that loads the removed member removed in the construction section 110 on the lorry is herein referred to as “construction unit lifting machine 500”. The construction section lifting machine 500 also lifts a newly installed member transported to the construction section 110, and is installed around the construction section 110 (rear in this figure) as shown in FIG. In addition, the construction part lifting machine 500 can use a conventionally used rough terrain crane, truck crane, crawler crane, or the like (hereinafter, collectively referred to as “rough terrain crane, etc.”). A new lifting device using a lifter, specifically, a lifting device with a lifting mechanism installed on the lifter (hereinafter referred to as a "winch-type lifting device"), or an installation girder spanning multiple lifters A lifting device (hereinafter, referred to as a “installed girder-type lifting device”) may be employed.

2. Next, a removing member carrying out method of the present invention will be described with reference to FIGS. FIG. 4 is a flowchart showing the flow of the main steps of the removing member carrying out method of the present invention, and FIGS. 5 to 11 are step diagrams showing the main steps of the removing member carrying out method of the present invention. 5 to 8 show a case where one delivery lifter 400 is installed, and FIGS. 9 to 11 show a case where two delivery lifters 400 are installed.

(When one delivery lifter is installed)
Before starting the construction, a construction yard 100 is first set as shown in FIG. 1 (Step 101). At this time, the construction yard 100 is set so that the construction section 110 is included, and the construction section 110 is located at the rear of the whole. The setting of the construction yard 100 may be clearly indicated by, for example, installing a temporary enclosure around the construction yard 100. When the construction yard 100 is set, the vehicle row group 200 enters the construction yard 100 as shown in FIG. 5A (Step 102). At this time, the vehicle row group 200 enters the construction yard 100 from the starting point side while passing through the lane in which the construction yard 100 is set, that is, without passing through another lane shown in FIG. Let it. The vehicle group 200 that has entered the construction yard 100 is disposed in the construction yard 100 in a region ahead of the construction section 110.

  As shown in FIG. 5 (a), when the row of cars 200 enters the construction yard 100, the delivery lifter 400 is attached to one of the lorries (the trailing car 320 in this figure) constituting the row of cars 200. It can also be installed. If the construction yard 100 can be secured by regulating the lane for a long period of time (several days to several weeks), the delivery lifter 400 can be always installed. However, for example, when traffic regulation is allowed only at night, Each time, it is necessary to carry in and install the delivery lifter 400, and as shown in FIG. 5A, the delivery lifter 400 is mounted on the lorry and enters the construction yard 100.

  When the vehicle group 200 is arranged at a predetermined position in the construction yard 100, the delivery lifter 400 is installed at a predetermined position as shown in FIG. 5B (Step 103). At this time, if the outrigger-type delivery lifter 400R is mounted on the lorry and entered, the outrigger-type delivery lifter 400R can be installed independently as shown in FIG. When the delivery lifter 400 has already been installed at a predetermined position in the construction yard 100 (for example, when the construction yard 100 can be secured during a long period of time), the delivery lifter installation step (Step 103) is omitted. be able to.

  When the preparation up to this point is completed, the constituent members planned in the construction section 110 are removed (Step 104). In addition, when the component has already been removed and the removed member has been temporarily placed around the construction section 110, the member removing step (Step 104) can be omitted. When the component members are removed (or when the removal members are prepared), the trailing vehicle 320 retreats and approaches the front of the construction section 110, and the construction part lifting machine 500 is lifted as shown in FIG. 5C. The removal member is mounted on the rear vehicle 320 (Step 105). As described above, a rough terrain crane or the like can be used as the construction section lifting machine 500, and a winch-type lifting apparatus or an installed girder-type lifting apparatus, which is a new lifting apparatus, can also be used.

  When the removing member is mounted on the trailing vehicle 320, the trailing vehicle 320 mounted with the removing member moves in the construction yard to the position of the delivery lifter 400 as shown in FIG. The removal member mounted on the vehicle 320 is lifted (Step 106). When the delivery lifter 400 lifts the removal member, the leading vehicle 310 enters the traffic space 440 of the delivery lifter 400 while retreating, and stops so that the carrier is positioned below the suspended load (removal member). . At this time, as shown in FIG. 6B, the vehicle row group 200 moves in the construction yard 100 while moving backward while maintaining the order of the lorries. When the leading vehicle 310 stops, the removing member suspended by the delivery lifter 400 is mounted on the leading vehicle 310 as shown in FIG. 6B (Step 107). When the leading vehicle 310 mounts the removal member, the leading vehicle 310 leaves the construction yard 100 as shown in FIG. 6C (Step 108). At this time, the leading vehicle 310 exits from the end point side of the construction yard 100 without passing through the lane in which the construction yard 100 is set, that is, without passing through another lane shown in FIG.

  When the convoy group 200 is composed of a leading vehicle 310 and a trailing vehicle 320, and only one removal member is carried out (for example, on that day), after the steps up to this point, the trailing vehicle 320 mounts the delivery lifter 400. Then, the work is carried out of the construction yard 100 (Step 109), and the work is cleared (Step 110) to complete the work. On the other hand, when the vehicle row group 200 is composed of the leading vehicle 310 and the trailing vehicle 320, one or more intermediate vehicles 330 (that is, three or more lorries), the construction starts from the temporary loading step of removing members (Step 105). A cycle up to the yard leaving step (Step 108) (hereinafter, referred to as “unloading cycle”) is repeated until the leading vehicle 310 and the intermediate vehicle 330 leave (that is, until only the trailing vehicle 320 remains in the construction yard 100). . In the second and subsequent unloading cycles, the truck group 200 is constituted by trucks other than the truck that has left, and the truck located at the forefront of the newly constructed truck group 200 is newly added to the leading vehicle 310. And

  For example, the step diagrams in FIGS. 5 to 8 show a case where the row of vehicles 200 is composed of three vehicles: a leading vehicle 310, a trailing vehicle 320, and an intermediate vehicle 330, and the carry-out cycle is repeated twice. That is, as shown in FIG. 6 (c), when the leading vehicle 310 leaves the construction yard 100, the convoy group 200 is composed of two trucks excluding the truck that has left, and the foremost cargo among them. With the car as the leading vehicle 310, the next unloading cycle is started.

  Specifically, when the leading vehicle 310 exits outside the construction yard 100 (or before or along with exit), the second removal member is mounted on the trailing vehicle 320 that has retreated to the front of the construction section 110 (Step 105). Then, as shown in FIG. 7A, the removal member of the tail vehicle 320 is lifted after moving to the position of the delivery lifter 400 again (Step 106). Then, as shown in FIG. 7B, the leading vehicle 310 (the intermediate vehicle 330 in the first unloading cycle) enters the traffic space 440 of the delivery lifter 400 while retreating and stops under the suspended load. . At this time, the row 200 moves in the construction yard 100 while moving backward while maintaining the order of the lorries. When the second removal member suspended by the delivery lifter 400 is mounted on the leading vehicle 310 (Step 107), the leading vehicle 310 leaves the construction yard 100 as shown in FIG. 7C (Step 108). . When the steps up to this point are completed, the trailing vehicle 320 carries the delivery lifter 400 and carries it out of the construction yard 100 (Step 109). At this time, if the outrigger type delivery lifter 400R is adopted as the delivery lifter 400, the delivery lifter 400 can be mounted on the rear vehicle 320 in the reverse procedure shown in FIG. In addition, when it is not necessary to remove the delivery lifter 400 in the construction yard 100 (for example, when the construction yard 100 can be secured for a long period of time), the delivery step of the delivery lifter (Step 109) can be omitted. Then, after-cleaning is performed (Step 110), and the operation is completed.

(When multiple delivery lifters are installed)
The case where one delivery lifter 400 is installed has been described so far. Next, a case where the delivery lifter 400 is installed at n (n is an integer of 2 or more) locations will be described. Here, for convenience, an example in which two (ie, n = 2) delivery lifters 400 are installed will be described. However, when three or more delivery lifters 400 are installed, the procedure described below is the same. is there.

  The case where a plurality of delivery lifters 400 are installed is performed according to the flowchart shown in FIG. 4, similarly to the case where only one delivery lifter 400 is installed. When the construction yard 100 is set (Step 101), the vehicle row group 200 enters the construction yard 100 as shown in FIG. 9A (Step 102) and is arranged at a predetermined position, as shown in FIG. 9B. Two delivery lifters 400 are installed (Step 103). As described above, when the delivery lifter 400 is already installed, the installation step of the delivery lifter 400 can be omitted (Step 103). In this case, in order to distinguish the two delivery lifters 400, the construction yard 100 that is installed in the front is the first delivery lifter 400a, and the one that is installed in the back is the second delivery lifter 400b. I mean.

  When the constituent members are removed (Step 104) (or when the removed members are prepared), the trailing vehicle 320 retreats and approaches the front of the construction section 110, and as shown in FIG. Is mounted on the rear vehicle 320 (Step 105). However, at this time, as many removal members as the number n of the delivery lifters 400 installed are mounted on the rear vehicle 320. For example, FIGS. 9 to 11 illustrate an example in which two (n = 2) delivery lifters 400 are installed. Therefore, also in FIG. 9C, two removal members are mounted on the rear vehicle 320. I have.

  When two removal members are mounted on the rear vehicle 320, the rear vehicle 320 moves in the construction yard to the position of the second delivery lifter 400b as shown in FIG. The first removal member is lifted at 400b, and the trailing vehicle 320 moves in the construction yard to the position of the first delivery lifter 400a, and the second removal member is lifted by the first delivery lifter 400a. (Step 106). The trailing vehicle 320 may move in the order of the first delivery lifter 400a to the second delivery lifter 400b.

  When the first delivery lifter 400a and the second delivery lifter 400b lift the removal member, as shown in FIG. 10B, the leading vehicle 310 moves backward to the position of the first delivery lifter 400a as shown in FIG. After moving within the construction yard, the first removal member is mounted on the leading vehicle 310 with the first delivery lifter 400a, and the leading vehicle 310 is further moved within the construction yard to the position of the second delivery lifter 400b. Then, the second removal member is mounted on the leading vehicle 310 by the second delivery lifter 400b (Step 107). At this time, as shown in FIG. 10B, the row of vehicles 200 moves in the construction yard 100 while moving backward while maintaining the order of the trucks. The leading vehicle 310 may move in the order of the second delivery lifter 400b to the first delivery lifter 400a. The leading vehicle 310 on which the two removal members are mounted leaves the construction yard 100 (Step 108).

  When the leading vehicle 310 leaves the construction yard 100, a second unloading cycle is started. As shown in FIG. 10 (b), two removal members are mounted again on the trailing vehicle 320 which has retreated to the front of the construction section 110 (Step 105), and as shown in FIG. 10 (c), the first delivery lifter Each of the delivery lifters 400 lifts the removal member of the tail vehicle 320 after moving to the position of the second delivery lifter 400b and the second delivery lifter 400 (Step 106). Then, as shown in FIG. 11A, the leading vehicle 310 (the intermediate vehicle 330 in the first unloading cycle) moves to the position of the first delivery lifter 400a and the second delivery lifter 400b while moving backward. Then, the removal members lifted by the respective delivery lifters 400 are mounted on the leading vehicle 310 (Step 107), and the leading vehicle 310 equipped with the two removal members leaves the construction yard 100 (Step 108). When the steps up to this point are completed, as shown in FIG. 11B, the intermediate vehicle 330 remaining in the construction yard 100 is equipped with the first delivery lifter 400a, and the trailing vehicle 320 is attached to the second delivery lifter 400. The lifter 400b is mounted and carried out of the construction yard 100 (Step 109). As described above, when there is no need to remove the delivery lifter 400 in the construction yard 100, the delivery step of the delivery lifter (Step 109) can be omitted. Then, after-cleaning is performed (Step 110), and the operation is completed.

3. Member Update Method Next, a member update method according to the present invention will be described with reference to the drawings. The member updating method of the present invention uses the removal member carrying-out method described above, that is, the contents not described here are the same as those described in the removal member carrying-out method. Further, the member renewal method of the present invention is applied to a case in which one delivery lifter 400 is installed in the construction yard 100, and two delivery lifters 400 are installed in the construction yard 100, and one delivery lifter 400 is used for one truck. A case for mounting components (removed members and newly installed members), two delivery lifters 400 are installed in the construction yard 100, and two components (removed members and newly installed members) are mounted for each truck. They can be roughly divided into cases. Therefore, the description will be made separately in a first case to a third case.

(First case)
FIG. 12 is a flowchart showing the flow of the main steps of the first case member updating method, and FIGS. 13 to 17 are step diagrams showing the main steps of the first case member updating method. When the construction yard 100 is set (Step 101), as in the removal member carrying out method of the present invention (Step 101), the vehicle row group 200 enters the construction yard 100 as shown in FIG. 13A (Step 102). The vehicle row group 200 includes a leading vehicle 310 and a trailing vehicle 320, one or more intermediate vehicles 330, and the intermediate vehicles 330 are each provided with a new member. For example, in FIG. 13 (a), the first vehicle 310, the rear vehicle 320, and the two intermediate vehicles 330 constitute the vehicle row group 200, and the two intermediate vehicles 330 are each provided with a new member. I have. When the vehicle group 200 is arranged at a predetermined position, the delivery lifter 400 is installed as shown in FIG. 13B (Step 103). As described above, when the delivery lifter 400 is already installed, the installation step of the delivery lifter 400 can be omitted (Step 103).

  When the constituent members are removed (Step 104) (or when the removed members are prepared), the rear vehicle 320 retreats and approaches the front of the construction section 110, and as shown in FIG. Is mounted on the rear vehicle 320 (Step 105).

  When the removal member is mounted on the rear vehicle 320, the rear vehicle 320 moves in the construction yard to the position of the delivery lifter 400, and the removal member is lifted by the delivery lifter 400, as shown in FIG. Step 106). When the delivery lifter 400 lifts the removal member, as shown in FIG. 14B, the leading vehicle 310 moves in the construction yard to the position of the delivery lifter 400 while retreating, and is removed by the delivery lifter 400. The member is mounted on the leading vehicle 310. At this time, as shown in FIG. 14B, the row of vehicles 200 moves in the construction yard 100 while moving backward while maintaining the order of the trucks. As shown in FIG. 14C, the leading vehicle 310 on which the removal member is mounted leaves the construction yard 100 (Step 201).

  When the leading vehicle 310 leaves the construction yard 100 (or before or with the exit), as shown in FIG. 14 (c), the intermediate vehicle 330 equipped with the new member is moved to the position of the delivery lifter 400 in the construction yard. Is moved, and the new member is lifted by the delivery lifter 400 (Step 202). When the delivery lifter 400 lifts the new member, the trailing vehicle 320 moves in the construction yard to the position of the delivery lifter 400, and mounts the new member on the trailing vehicle 320 with the delivery lifter 400 (Step 203). . At this time, as shown in FIG. 15A, the row of vehicles 200 (excluding the leading vehicle 310) moves in the construction yard 100 while maintaining the order of the trucks.

  When the new member is mounted on the trailing vehicle 320, the trailing vehicle 320 retreats and approaches the front of the construction section 110, and as shown in FIG. 15B, the construction part lifting machine 500 lifts the new member of the trailing vehicle 320, The new member is suspended and installed at a planned position (for example, a location where a component is removed) in the construction section 110 (Step 204).

  When the steps up to this point are completed, the leading vehicle 310 and the intermediate vehicle 330 leave the cycle from the temporary loading step (Step 105) of the removed member to the installation step (Step 204) of the new member (hereinafter referred to as “update cycle”). (That is, until only the trailing vehicle 320 remains in the construction yard 100). However, when the row 200 is composed of three trucks (leading vehicle 310, trailing vehicle 320, and one intermediate vehicle 330), the process proceeds to the next step (Step 109) without repeating the update cycle. . In the second and subsequent renewal cycles, the train group 200 is constituted by trucks other than the truck that has exited, and the truck located at the forefront of the newly constructed train group 200 is newly added to the leading vehicle 310. And

  The step diagrams in FIGS. 13 to 17 show a case where the row of vehicles 200 is composed of a leading vehicle 310, a trailing vehicle 320, and two intermediate vehicles 330, and the update cycle is repeated twice. That is, when the first new member is installed, the removed member lifted by the construction unit lifting machine 500 is mounted on the trailing vehicle 320 as shown in FIG. 15C, and again as shown in FIG. 16A. After moving to the position of the delivery lifter 400, the removal member of the tail vehicle 320 is lifted (Step 106). Then, as shown in FIG. 16B, the leading vehicle 310 (the intermediate vehicle 330 in the first update cycle) enters the traffic space 440 of the delivery lifter 400 while retreating and stops under the suspended load. . At this time, the row 200 moves in the construction yard 100 while moving backward while maintaining the order of the lorries.

  When the removal member lifted by the delivery lifter 400 is mounted on the leading vehicle 310 as shown in FIG. 16B, the leading vehicle 310 leaves the construction yard 100 as shown in FIG. 16C (Step 201). ). When the leading vehicle 310 leaves the construction yard 100 (or before or along with the leaving), as shown in FIG. 16C, the intermediate vehicle 330 equipped with the new member (an intermediate vehicle different from the first update cycle) 330) is moved in the construction yard to the position of the delivery lifter 400, and the new member is lifted by the delivery lifter 400 (Step 202). When the delivery lifter 400 lifts the new member, the trailing vehicle 320 moves in the construction yard to the position of the delivery lifter 400 as shown in FIG. It is mounted on the vehicle 320 (Step 203). When the new member is mounted on the trailing vehicle 320, the trailing vehicle 320 retreats and approaches the front of the construction section 110, and as shown in FIG. 17B, the construction part lifting machine 500 lifts the new member of the trailing vehicle 320, The new member is suspended and installed at a planned position in the construction section 110 (Step 204).

  When the above steps are completed, the trailing vehicle 320 carries the delivery lifter 400 and carries it out of the construction yard 100 (Step 109). As described above, when there is no need to remove the delivery lifter 400 in the construction yard 100, the delivery step of the delivery lifter (Step 109) can be omitted. Then, after-cleaning is performed (Step 110), and the operation is completed.

(Second case)
FIG. 18 is a flowchart showing the flow of the main steps of the member updating method of the second case, and FIGS. 19 to 23 are step diagrams showing the main steps of the member updating method of the second case. 19 to 23 show an example in which a construction girder-type lifting device is used as a construction part lifting machine, and further show a process of constructing a construction girder-type lifting device (construction part lifting machine construction process). However, as described above, a rough terrain crane or a winch-type lifting device can be used as the construction part lifting machine, so that the construction part lifting step (Step 301) of the construction part lifting machine is not necessarily performed.

  When the construction yard 100 is set (Step 101) as in the removal member carrying out method and the first case of the present invention, the train row 200 enters the construction yard 100 as shown in FIG. 19A (Step 102). The vehicle row group 200 includes a leading vehicle 310 and a trailing vehicle 320, one or more intermediate vehicles 330, and the intermediate vehicles 330 are each provided with a new member. For example, in FIG. 19A, the first vehicle 310, the rear vehicle 320, and the two intermediate vehicles 330 constitute the vehicle row group 200, and each of the two intermediate vehicles 330 is provided with a new member. I have. It should be noted that the four rear trucks shown in FIG. 19 are provided with components of the erected girder-type lifting device, and are not trucks constituting the row 200. Here, a truck equipped with the components of the erected girder type lifting device is referred to as a “component transport vehicle 600”.

  When the vehicle group 200 is arranged at a predetermined position, the respective lifters (conventional lifters) mounted on the two rear component transport vehicles 600 are transported to the construction section 110, as shown in FIG. 19B. Two lifters are installed so that the construction section 110 is sandwiched between them. Next, as shown in FIG. 19 (c) and FIG. 20 (a), each of the divided members (members constituting the erection girder) mounted on the remaining two component transport vehicles 600 is moved to the position of the installed lifter. Transport. After transporting the mounted components, the four component transport vehicles 600 stand by in the construction yard 100 behind (the end point side) the construction section 110. Then, the two divided members are connected to complete the erection girder. The suspended load mechanism can be transported to the site in a state where it is attached to the erection girder (rail girder) in advance, or the erection girder and the suspended load mechanism can be separately transported and suspended according to the connection of the divided members. The loading mechanism can also be attached to the erection girder. However, the lifting mechanism is mounted so as to be able to traverse along the erection girder. Both ends of the bridge girder to which the hanging load mechanism is attached are fixed to the gantry 420 of the two lifters, and in this state, the two lifters are jacked up. As a result, the erection girder is bridged between the two lifters, and the erection girder is arranged on the construction section 110. By carrying out the above-mentioned steps to construct the erected girder-type lifting device (Step 301), two delivery lifters 400 are installed as shown in FIG. 20B (Step 103). As described above, when the delivery lifter 400 is already installed, the installation step of the delivery lifter 400 can be omitted (Step 103). In this case, in order to distinguish the two delivery lifters 400, the construction yard 100 that is installed in the front is the first delivery lifter 400a, and the one that is installed in the back is the second delivery lifter 400b. I mean.

  When the constituent members are removed (Step 104) (or when the removed members are prepared), the trailing vehicle 320 retreats and approaches the front of the construction section 110, and as shown in FIG. The removal member lifted by the (construction girder lifting device) is mounted on the rear vehicle 320 (Step 105).

  When the removal member is mounted on the rear vehicle 320 (or before or together with the mounting), the intermediate vehicle 330 mounted with the new member as shown in FIG. 20C moves through the construction yard to the position of the first delivery lifter 400a. After moving, the newly provided member is lifted by the first delivery lifter 400a, and the trailing vehicle 320 having the removal member mounted thereon as shown in FIG. 21 (a) moves in the construction yard to the position of the second delivery lifter 400b. Then, the removal member is lifted by the second delivery lifter 400b (Step 205). Note that the trailing vehicle 320 moves to the first delivery lifter 400a and lifts the removal member with the first delivery lifter 400a, and the intermediate vehicle 330 moves to the second delivery lifter 400b and travels to the second delivery lifter 400b. The new member can be lifted by the lifter 400b.

  When the first delivery lifter 400a lifts the newly provided member and the second delivery lifter 400b lifts the removal member, as shown in FIG. 21B, the trailing vehicle 320 moves the first delivery lifter 400a to the first delivery lifter 400a. The member is moved to the position in the construction yard, and the new member is mounted on the trailing vehicle 320 by the first delivery lifter 400a (Step 203). Also, as shown in FIG. 21C, the leading vehicle 310 moves in the construction yard to the position of the second delivery lifter 400b while retreating, and the removal member is moved to the leading vehicle 310 by the second delivery lifter 400b. Mount. At this time, as shown in FIG. 21C, the row of vehicles 200 moves in the construction yard 100 while moving backward while maintaining the order of the trucks. As shown in FIG. 22 (a), the leading vehicle 310 equipped with the removal member exits outside the construction yard 100 (Step 201), while the tail vehicle 320 equipped with the newly installed member retreats to the front of the construction section 110. As shown in FIG. 21 (c), the construction part lifting machine 500 (erection girder type lifting apparatus) lifts a new member of the trailing vehicle 320, and suspends the new member at a planned position in the construction section 110. (Step 204).

  When the above steps are completed, the next update cycle is performed. However, when the vehicle row group 200 is composed of three lorries (only one intermediate vehicle 330), the process proceeds to the next step (Step 109) without repeating the update cycle. As shown in FIG. 22 (a), when the leading vehicle 310 leaves the construction yard 100 (or before leaving or together with the leaving), the removal unit lifted by the construction part lifting machine 500 (the erected girder type lifting device) constructs the removal member. The vehicle is re-mounted on the trailing vehicle 320 that has retreated to the front of the section 110 (Step 105), and another intermediate vehicle 330 equipped with the newly-installed member moves in the construction yard to the position of the second delivery lifter 400b, and the second vehicle 330 moves to the second position. The new member is lifted by the delivery lifter 400b. Further, as shown in FIG. 22 (b), the trailing vehicle 320 mounted with the removing member moves through the traffic space 440 of the second delivery lifter 400b and moves in the construction yard to the position of the first delivery lifter 400a. Then, the removal member is lifted by the first delivery lifter 400a (Step 205). The intermediate vehicle 330 moves to the first delivery lifter 400a and lifts the new member with the first delivery lifter 400a, and the trailing vehicle 320 moves to the second delivery lifter 400b and travels to the second delivery lifter 400b. The removal member can be lifted by the lifter 400b.

  When the first delivery lifter 400a lifts the existing member and the second delivery lifter 400b lifts the new member, as shown in FIG. 22C, the leading vehicle 310 (the intermediate vehicle in the first update cycle) 330) moves in the construction yard to the position of the first delivery lifter 400a, mounts the removal member on the leading vehicle 310 with the first delivery lifter 400a, and the trailing vehicle 320 connects the second delivery lifter 400b. The vehicle is moved to the position in the construction yard, and the new member is mounted on the trailing vehicle 320 by the second delivery lifter 400b (Step 203). Thereafter, as shown in FIG. 23 (a), the leading vehicle 310 equipped with the removal member exits outside the construction yard 100 (Step 201), while the tail vehicle 320 equipped with the newly installed member extends to the front of the construction section 110. When approaching by retreating, the construction part lifting machine 500 (the erected girder type lifting apparatus) lifts the new member of the trailing vehicle 320 and suspends and installs the new member at the planned position in the construction section 110 (Step 204).

  When the steps up to this point are completed, as shown in FIG. 23B, the intermediate vehicle 330 remaining in the construction yard 100 is equipped with the first delivery lifter 400a, and the rear vehicle 320 is attached to the second delivery lifter 400. The lifter 400b is mounted and carried out of the construction yard 100 (Step 109). As described above, when there is no need to remove the delivery lifter 400 in the construction yard 100, the delivery step of the delivery lifter (Step 109) can be omitted. Thereafter, as shown in FIG. 23 (c), the construction part lifting machine 500 (construction girder-type lifting apparatus) is removed, and after that, cleaning is performed (Step 110), and the operation is completed.

(Third case)
FIG. 24 is a flowchart showing a main process flow of the third case member updating method, and FIGS. 25 to 29 are step diagrams showing main steps of the third case member updating method. FIGS. 25 to 29 show an example in which a rough terrain crane or the like is used as the construction part lifting machine. However, as described above, a winch type lifting device or an erected girder type lifting device is used as the construction part lifting machine. You can also.

  When the construction yard 100 is set (Step 101) as in the removal member carrying-out method and the first case and the second case of the present invention, the vehicle row group 200 enters the construction yard 100 as shown in FIG. (Step 102). The row 200 includes a leading vehicle 310 and a trailing vehicle 320, one or more intermediate vehicles 330, and the intermediate vehicle 330 has two newly installed members. For example, in FIG. 25A, the first vehicle 310, the rear vehicle 320, and the two intermediate vehicles 330 constitute the vehicle row group 200, and each of the two intermediate vehicles 330 has two new members. Is installed.

  When the vehicle group 200 is arranged at a predetermined position, two delivery lifters 400 are installed as shown in FIG. 25B (Step 103). As described above, when the delivery lifter 400 is already installed, the installation step of the delivery lifter 400 can be omitted (Step 103). In this case, in order to distinguish the two delivery lifters 400, the construction yard 100 that is installed in the front is the first delivery lifter 400a, and the one that is installed in the back is the second delivery lifter 400b. I mean.

  When the constituent members are removed (Step 104) (or when the removed members are prepared), the trailing vehicle 320 retreats and approaches the front of the construction section 110, and as shown in FIG. As a result, the two removal members are mounted on the rear vehicle 320 (Step 206).

  When two removal members are mounted on the rear vehicle 320, the rear vehicle 320 moves in the construction yard to the position of the second delivery lifter 400b as shown in FIG. , And the trailing vehicle 320 moves within the construction yard to the position of the first delivery lifter 400a, and the second delivery member is lifted by the first delivery lifter 400a ( Step 106). The trailing vehicle 320 may move in the order of the first delivery lifter 400a to the second delivery lifter 400b.

  When the first delivery lifter 400a and the second delivery lifter 400b lift the removal member, as shown in FIG. 26B, the leading vehicle 310 moves backward to the position of the first delivery lifter 400a as shown in FIG. After moving within the construction yard, the first removal member is mounted on the leading vehicle 310 with the first delivery lifter 400a, and the leading vehicle 310 is further moved within the construction yard to the position of the second delivery lifter 400b. Then, the second removal member is mounted on the leading vehicle 310 by the second delivery lifter 400b (Step 107). At this time, as shown in FIG. 26 (b), the row of vehicles 200 moves in the construction yard 100 while moving backward while maintaining the order of the trucks. The leading vehicle 310 may move in the order of the second delivery lifter 400b to the first delivery lifter 400a. The leading vehicle 310 on which the two removal members are mounted leaves the construction yard 100 (Step 207). On the other hand, the empty trailing vehicle 320 retreats to the front of the construction section 110, and mounts the two removed members again by the construction part lifting machine 500 (Step 208).

  As shown in FIG. 26 (c), when the leading vehicle 310 leaves the construction yard 100 (or before or together with the leaving), the intermediate vehicle 330 equipped with the two newly installed members becomes the first delivery lifter 400a. In the construction yard, one new member is lifted by the first delivery lifter 400a, and two trailing members 320 are mounted on the first delivery lifter 400a, and the rear vehicle 320 is moved to the second delivery lifter 400b. Then, one removal member is lifted by the second delivery lifter 400b (Step 205). Note that the trailing vehicle 320 moves to the first delivery lifter 400a and lifts the removal member with the first delivery lifter 400a, and the intermediate vehicle 330 moves to the second delivery lifter 400b and travels to the second delivery lifter 400b. The new member can be lifted by the lifter 400b.

  When the first delivery lifter 400a lifts the newly provided member and the second delivery lifter 400b lifts the removal member, as shown in FIG. 27A, the trailing vehicle 320 moves the first delivery lifter 400a to the first delivery lifter 400a. In the construction yard, the new member is mounted on the trailing vehicle 320 by the first delivery lifter 400a, and the remaining removed members are lifted from the trailing vehicle 320 by the first delivery lifter 400a. Then, as shown in FIGS. 27 (b) to 27 (c), the intermediate vehicle 330 moves in the construction yard to the position of the second delivery lifter 400b, and removes the removal member with the second delivery lifter 400b. While being mounted on the intermediate vehicle 330, the remaining new members are lifted from the intermediate vehicle 330 by the second delivery lifter 400b (Step 209).

  As shown in FIGS. 27B to 27C, while the intermediate vehicle 330 is carrying out the replacement of the cargo with the second delivery lifter 400 b, the rear vehicle 320 equipped with one new member is Then, it retreats to the front of the construction section 110 and approaches, and the new member of the trailing vehicle 320 is installed at the planned position in the construction section 110 by the construction section lifting machine 500 (Step 204).

  As shown in FIG. 28A, the intermediate vehicle 330 equipped with one removal member moves in the construction yard to the position of the first delivery lifter 400a, and is removed by the first delivery lifter 400a. The member is mounted on the intermediate vehicle 330, and the intermediate vehicle 330 on which the two removal members are mounted leaves the construction yard 100 (Step 210). While the intermediate vehicle 330 mounts the second removal member with the first delivery lifter 400a, as shown in FIGS. 28A and 28B, the rear vehicle 320 is in the second delivery state. In the construction yard, the new member is mounted on the trailing vehicle 320 by the second delivery lifter 400b (Step 203), and retreated to the front of the construction section 110 to approach and lift the construction part. The new member of the trailing vehicle 320 is installed at the planned position in the construction section 110 by the heavy equipment 500 (Step 204).

  When the above steps are completed, the next update cycle is performed. However, when the vehicle row group 200 is composed of three lorries (only one intermediate vehicle 330), the process proceeds to the next step (Step 109) without repeating the update cycle. As shown in FIGS. 28 (b) to 28 (c), when the intermediate vehicle 330 equipped with two removal members exits outside the construction yard 100 (or before exiting or together with exit), another intermediate vehicle 330 exits. (With two new members) is moved in the construction yard to the position of the second delivery lifter 400b, and the first delivery member is lifted by the second delivery lifter 400b. The inside of the construction yard is moved to the position of the first delivery lifter 400a, and the second delivery member is lifted by the first delivery lifter 400a. The intermediate vehicle 330 may move in the order of the first delivery lifter 400a to the second delivery lifter 400b.

  When the first delivery lifter 400a and the second delivery lifter 400b lift the newly provided member, as shown in FIGS. 28 (c) to 29 (a), the rear vehicle 320 is moved to the second delivery lifter 400b. , The new member is mounted on the trailing vehicle 320 by the second delivery lifter 400b, and the trailing vehicle 320 is further moved in the construction yard to the position of the first delivery lifter 400a. The new member is mounted on the trailing vehicle 320 by the first delivery lifter 400a. The trailing vehicle 320 may move in the order of the first delivery lifter 400a to the second delivery lifter 400b.

  As shown in FIG. 29 (b), the trailing vehicle 320 mounted with the two newly installed members retreats to the front of the construction section 110 and approaches, and the construction section lifting machine 500 removes the two newly installed members of the trailing vehicle 320. Is installed at the planned position in the construction section 110 (Step 204).

  When the steps up to this point are completed, as shown in FIGS. 29B to 29C, the intermediate vehicle 330 remaining in the construction yard 100 mounts the first delivery lifter 400a and the rear vehicle 320 Carries the second delivery lifter 400b and carries it out of the construction yard 100 (Step 109). As described above, when there is no need to remove the delivery lifter 400 in the construction yard 100, the delivery step of the delivery lifter (Step 109) can be omitted. Then, after-cleaning is performed (Step 110), and the operation is completed.

4. Lifting and hoisting by the construction part lifting machine As described above, the removal member carrying out method and the member renewal method of the present invention include a construction girder lifting device and a winch type lifting device in addition to a rough terrain crane as the construction part lifting machine 500. Such a new lifting device can be used. Here, the lifting and lowering by the construction part lifting machine performed by the removal member unloading method and the member renewing method of the present invention will be described, particularly when the erected girder type lifting device is used, and when the winch type lifting device is used. A case in which is used will be described.

(When using a girder lifting device)
First, a method of constructing a construction girder type lifting device will be described. FIG. 30 is a step diagram showing main steps of a method for constructing a bridge girder-type lifting device. First, as shown in FIG. 30A, two conventional lifters (hereinafter simply referred to as “conventional lifters 510”) are installed. At this time, two conventional lifters 510 are installed so as to sandwich the position of the component to be removed or the planned position for installing the installation member. Although two conventional lifters 510 are installed here for convenience, three or more conventional lifters 510 can be installed instead of this.

  When the conventional lifter 510 is installed, the two divided members are connected to complete the bridge girder. As shown in FIG. 30B, when the bridge girder 520 becomes long, a plurality of (two in the figure) divided members 520a can be connected. Of course, depending on the extension, the bridge 520 can be formed by one member without being divided. As shown in FIG. 31A, the bridge girder 520 is formed by a main body girder 521 which is a structural girder and a rail girder 522 fixed to a lower portion of the main body girder 521. The main body girder 521 may be a girder using an H-beam, an I-beam, or the like, or may be a truss-type girder. The rail girder 522 can be a girder using an H-beam or an I-beam, or a girder combining an angle steel or a channel steel.

  In order to connect the divided members 520a to complete the erection girder 520, as shown in FIG. 30B, the two divided members 520a are placed on a pedestal placed on a road surface, and as shown in FIG. This is done by connecting these as shown. At this time, a part of the rail girder 522 installed between the two divided members 520a is also installed. As described above, the hanging load mechanism 530 can be carried to the site while being attached to the erection girder 520 (rail girder 522) in advance, or the erection girder 520 and the hanging load mechanism 530 can be separately carried in. The lifting mechanism 530 can be attached to the bridge 520 in accordance with the connection of the division members 520a. The hanging load mechanism 530 includes a hanging rope 531 (such as a wire rope or a chain), a hanging jig 533 (for example, a hook) fixed to a lower end of the hanging rope 531, and a power unit. It is an unloading device such as a hoist. Alternatively, a chain block having manual power means can be attached as the hanging load mechanism 530. However, the hanging load mechanism 530 is attached so as to be able to traverse along the erection girder 520. Specifically, as shown in FIG. 31B, the hanging load mechanism 530 is configured to include movable locking means 532 attached to the upper end of the hanging rope 531. It is preferable to adopt a structure in which the wheels of the movable locking means 532 locked to the rail girder 522 can move along the rail girder 522 after gripping the removal member or the newly provided member).

  When the erection girder 520 is completed and the hanging load mechanism 530 is attached to the erection girder 520, both ends of the erection girder 520 are fixed to the gantry of the two conventional lifters 510, and then, as shown in FIG. The column of the conventional lifter 510 is extended and jacked up. As a result, the erection girder 520 is bridged between the two conventional lifters 510, and the erection girder type lifting device is constructed in the construction section 110.

  FIG. 32 (a) is a step diagram showing a step of lifting the removal member by the erection girder type lifting device constructed in the construction section 110, and FIG. 32 (b) is lifted by the erection girder type lifting device. It is a step diagram showing a process of mounting a removal member in tail vehicle 320. As shown in this figure, the removal member gripped by the lifting jig 533 can be lifted by the erection girder type lifting device, and the lifting load mechanism 530 moves along the erection girder 520 with the removal member being lifted. By moving, the removal member can be mounted on the rear vehicle 320 waiting in front. The lifting by the erected girder type lifting device can also be performed by jack-down and jack-up due to the expansion and contraction of the support of the conventional lifter 510.

  When a chain block having a manual power means is used as a lifting mechanism instead of a powered unloading device such as a winch or a hoist, the removal member is gripped by a chain block lifting jig 533 and human power is applied. The removal member is lifted (for example, about 50 cm) by winding up the chain, and in this state, the removal member is laterally moved along the erected girder 520 to a position below one (front side) of the conventional lifter 510. The lifter 510 jacks up the lifter to lift the removing member to a considerable height (for example, 3 m), and then lowers the removing member to the bed of a lorry that has moved into the traffic space.

  FIG. 33 (a) is a step diagram showing a step of lifting a newly-installed member mounted on a trailing vehicle by an installation girder lifting device constructed in the construction section, and FIG. It is a flowchart which shows the process of installing a newly installed member in a plan position. As shown in this figure, the new member mounted on the trailing vehicle 320 can be gripped by the lifting jig 533 and can be lifted by the erected girder-type lifting device. By moving the mechanism 530 along the erection girder 520, the mechanism 530 can be suspended and installed at the planned position of the construction section 110. Note that the suspension by the erected girder-type lifting device can also be performed by jack-down due to the expansion and contraction of the column of the conventional lifter 510.

  When a new member is installed, a chain block having a manual power unit can be used as a hanging load mechanism. That is, the new member temporarily placed on the road surface is gripped by the hanging jig 533 of the chain block, and the chain is wound up by human power to lift the new member (for example, about 50 cm). Is laterally moved along the erected girder 520 to below the conventional lifter 510. Then, when the conventional lifter 510 is jacked down, the new member is hung at the planned position.

  Each time the removal member is removed, the removal member can be mounted on the trailing vehicle 320. Alternatively, as shown in FIG. 34A, the removal member is temporarily placed at a predetermined location in the construction yard 100 (for example, behind the construction section 110). You can also put it. Similarly, the new member can be installed at the planned position every time it is lifted from the trailing vehicle 320. Alternatively, as shown in FIG. 34 (b), the new member can be installed at a predetermined location in the construction yard 100 (for example, on the rear side of the construction section 110). You can also put them temporarily.

(When using a winch type lifting device)
FIG. 35 is a step diagram showing a process of mounting the removing member on the trailing vehicle 320 by the winch type lifting device. When lifting or lowering a component using a winch-type lifting device, two winch-type lifting devices are installed as shown in this figure. In order to distinguish the two winch-type lifting devices, the one installed in the front of the construction yard 100 is the first winch-type lifting device, and the one installed in the rear is the second winch-type lifting device. I mean.

  As described above, the winch type lifting device is a lifting device in which the lifting mechanism 530 is installed on the conventional lifter 510. The hanging load mechanism 530 includes a hanging rope 531 (such as a wire rope or a chain), a hanging jig 533 (such as a hook) fixed to the tip of the hanging rope, and power means. It is an unloading device such as a hoist. Further, a chain block having manual power means may be used as the unloading device. That is, by lifting or lowering the suspension rope 531 by the power means of the suspension load mechanism 530, the component members (removed members or newly-installed members) held by the suspension jig 533 can be lifted or lowered. When lifting or lowering a component using two winch-type lifting devices, a considerable horizontal force may act on each winch-type lifting device depending on the weight of the component. In this case, it is preferable that the strut of the conventional lifter 510 be firmly fixed on the road surface so that the winch-type lifting device does not fall down, and that four struts be reinforced.

  When the removing member is mounted on the trailing vehicle 320 by the winch-type lifting device, as shown in FIG. 35 (a), a predetermined interval is provided so as to sandwich the removing member, and the first winch-type lifting device and the first 2. Install the winch type lifting device. Also, as shown in FIG. 35 (d), the first winch type lifting device may be installed at a position where the rear vehicle 320 stops later. When the first winch-type lifting device and the second winch-type lifting device are installed, both the suspension ropes 531 are lowered, and the removal member is gripped by both the suspension jigs 533. In this state, both suspending ropes 531 are equally wound by both power means, and the removing member is lifted so as to be located substantially in the middle between the first winch type lifting device and the second winch type lifting device.

  When the removal member is lifted, the removal member is moved below the first winch type lifting device as shown in FIG. 35 (c). Specifically, while maintaining the state in which the suspension rope 531 is hoisted by the power means of the first winch-type lifting device (that is, the state in which the removing member is lifted), the power means of the second winch-type lifting device is used. The suspension rope 531 is wound down (that is, the suspension rope 531 is loosened and extended). As a result, the removing member is pulled toward the first winch-type lifting device, and finally moves below the first winch-type lifting device.

  When the removing member is moved below the first winch-type lifting device, as shown in FIG. 35 (d), the trailing vehicle 320 enters (retreats) so that the loading platform enters the traffic space 440, and the first vehicle is retracted. By lowering the suspension rope 531 by the power means of the winch-type lifting device (that is, loosening and extending the suspension rope 531), the removing member is mounted on the rear vehicle 320, and the first winch-type lifting device and The gripping of the removal member by the hanging jig 533 of the second winch type lifting device is released.

  On the other hand, when the new member is installed at the planned position of the construction section 110 by the winch-type lifting device, the first winch-type lifting device is installed at the planned position, and the first winch-type lifting device is installed at a position away from the first lifting device. Two winch-type lifting devices are installed. When the first winch-type lifting device and the second winch-type lifting device are installed as described above, both the suspension ropes 531 are wound down, and the new member mounted on the trailing vehicle 320 by both the suspension jigs 533. To grip. In this state, both suspension ropes 531 are equally wound by both power means, and the new member is lifted so as to be located substantially in the middle between the first winch type lifting device and the second winch type lifting device.

  When the new member is lifted, the new member is moved below the first winch type lifting device. Specifically, while maintaining the state in which the suspension rope 531 is hoisted by the power means of the first winch-type lifting apparatus (that is, the state in which the new member is lifted), the power means of the second winch-type lifting apparatus is used. The suspension rope 531 is wound down (that is, the suspension rope 531 is loosened and extended). As a result, the new member is pulled toward the first winch-type lifting device, and finally moves below the first winch-type lifting device.

  When the new member is moved below the first winch-type lifting device, the suspension rope 531 is wound down by the power means of the first winch-type lifting device (that is, the suspension rope 531 is loosened and extended). Then, the new member is installed at the planned position, and the holding of the new member by the hanging jig 533 of the first winch type lifting device and the second winch type lifting device is released.

  The removal member carrying out method and the member renewal method of the present invention can be used for various types of road bridges such as a motorway and a general motorway. According to the invention of the present application, in consideration of the fact that a road bridge in service can be efficiently updated and, consequently, the life span of the road bridge is prolonged, not only can it be used industrially but also a great contribution to society can be expected. It can be said that the invention is obtained.

Reference Signs List 100 construction yard 110 construction section 200 vehicle row group 310 leading vehicle 320 trailing vehicle 330 intermediate vehicle 400 delivery lifter 400a first delivery lifter 400b second delivery lifter 400R outrigger delivery lifter 410 (of delivery lifter) Post 420 Gantry 430 (for delivery lifter) Suspension locking device 440 (for delivery lifter) Passing space (for delivery lifter) 500 Construction lifting machine 510 Conventional lifting machine 520 (construction lifting machine) Erection girder 520a (of erection girder) Split member 521 (of erection girder) Body girder 522 (of erection girder) Rail girder 530 (of construction equipment lifting machine) Lifting mechanism 531 (of lifting equipment) 532 Mobile locking means (of the lifting mechanism) 533 Lifting (of the lifting mechanism) Jig 600 parts transport vehicle Ta, Tb lorry Tr trailer

Claims (11)

A predetermined section using one lane of the road bridge is set as a construction yard, and a delivery lifter installed in the construction yard is used, and a group of lorries arranged in a row is used. And removing the removal member,
The removal member is a component of a road bridge removed in a construction section in the construction yard,
The delivery lifter installed in front of the construction section has a traffic space through which a lorry can pass below the load in a state where the load is lifted, and the load of the lorry stopped in the traffic space. Is a lifting machine capable of lifting and lowering
The vehicle row group is arranged in an area in the construction yard and ahead of the construction section,
A trailing vehicle, which is a lorry located at the rearmost position in the group of vehicles, the removing member, a removing member temporary loading step of mounting near the construction section,
The rear vehicle equipped with the removal member moves in the construction yard to the position of the delivery lifter, and the delivery lifter lifts the removal member of the rear vehicle, and a removal member lifting step.
Until the leading vehicle, which is the foremost truck in the train group, comes to the position of the delivery lifter, the train group moves in the construction yard while maintaining the order of the trucks, Removing member main loading step of mounting the removing member lifted by the delivery lifter on the leading vehicle;
A construction yard exit step in which the leading vehicle equipped with the removal member exits outside the construction yard;
A removal member carrying-out method, comprising: The delivery lifter is installed at a position of n (n is an integer of 2 or more) or more,
In the removal member temporary loading step, the rear vehicle is mounted with n removal members,
And in the removal unit Seitz up process, each of the transfer lifter lifting one of said removal member,
In the removing member main loading step, the removing member lifted by each of the delivery lifters is mounted on the leading vehicle,
In the construction yard exit step, the leading vehicle equipped with the n removal members exits outside the construction yard,
The removal member carrying out method according to claim 1, characterized in that: The train group is composed of three or more lorries,
The unloading cycle from the removal member temporary loading process to the construction yard exit process is one,
When one lorry exits the construction yard in the construction yard exit step, the lorries remaining in the construction yard constitute the train group, and the foremost lorry in the train yard is Repeating the carry-out cycle on the leading vehicle,
The removal member carrying-out method according to claim 1 or 2, wherein: The vehicle further comprises a row group entry process and a delivery lifter installation process performed before the removal member temporary loading process,
In the vehicle row group entry process, the vehicle row group including a lorry equipped with the delivery lifter enters the construction yard and is arranged at a predetermined position.
In the delivery lifter installation step, the delivery lifter mounted on the truck is installed at a predetermined position,
The removal member carrying out method according to any one of claims 1 to 3, characterized in that: When only the same number of trucks including the trailing vehicle as the number of the delivery lifters remaining in the construction yard remain in the construction yard, the trucks in the construction yard are replaced with the trucks remaining in the construction yard. A delivery lifter unloading step in which the delivery lifter is mounted and the lorry equipped with the delivery lifter exits outside the construction yard,
The removal member carrying-out method according to any one of claims 1 to 4, further comprising: A predetermined section using one lane of the road bridge is set as a construction yard, and a delivery lifter installed in the construction yard is used, and a group of lorries arranged in a row is used. Then, a method of updating the components of the road bridge in the construction section in the construction yard,
The delivery lifter installed in front of the construction section has a traffic space through which a lorry can pass below the load in a state where the load is lifted, and the load of the lorry stopped in the traffic space. Is a lifting machine capable of lifting and lowering
The row of vehicles is composed of a leading vehicle located at the beginning of a plurality of lorries arranged in a line, a trailing vehicle located at the rear, and an intermediate vehicle located between the leading vehicle and the trailing vehicle. While being placed in the construction yard in a region in front of the construction section,
In the intermediate vehicle, a new member newly installed in the construction section is mounted,
A removing step of removing components of the road bridge in the construction section,
The trailing vehicle, the removal member removed in the removal step, the removal member temporary loading step of mounting near the construction section,
The rear vehicle equipped with the removal member moves in the construction yard to the position of the delivery lifter, and the delivery lifter lifts the removal member of the rear vehicle, and a removal member lifting step.
Until the leading vehicle comes to the position of the delivery lifter, the row of vehicles moves in the construction yard while maintaining the order of the lorries, and the removal member lifted by the delivery lifter removes the removal member from the leading vehicle. And a removal member carrying out step in which the leading vehicle equipped with the removal member exits outside the construction yard;
A new member lifting step in which the intermediate vehicle equipped with the new member moves in the construction yard to a position of the delivery lifter, and the delivery lifter lifts the new member,
Until the trailing vehicle comes to the position of the delivery lifter, the group of vehicles other than the leading vehicle moves in the construction yard while maintaining the order of the lorries, and the new lifter is lifted by the delivery lifter. Loading a new member onto the rear vehicle,
The rear vehicle equipped with the new member moves in the construction yard to the construction section, and a new member installation step of installing the new member at a planned position of the construction section,
A member updating method, comprising: A predetermined section using one lane of the road bridge is set as a construction yard, a first delivery lifter and a second delivery lifter installed at two locations in the construction yard are used, and a plurality of A method of updating a component of a road bridge in a construction section in the construction yard using a train group composed of lorries,
The first delivery lifter and the second delivery lifter installed in front of the construction section each have a traffic space through which a lorry can pass below the load in a state where the load is lifted. It is a lifting machine capable of lifting and hanging the load of a lorry parked in the traffic space,
The row of vehicles is composed of a leading vehicle located at the beginning of a plurality of lorries arranged in a line, a trailing vehicle located at the rear, and an intermediate vehicle located between the leading vehicle and the trailing vehicle. While being placed in the construction yard in a region in front of the construction section,
In the intermediate vehicle, a new member newly installed in the construction section is mounted,
A removing step of removing components of the road bridge in the construction section,
The trailing vehicle, the removal member removed in the removal step, the removal member temporary loading step of mounting near the construction section,
The rear vehicle equipped with the removal member moves in the construction yard to the position of the first delivery lifter, and the first delivery lifter lifts the removal member of the rear vehicle, and A process of lifting the intermediate member equipped with a member, moving the inside of the construction yard to the position of the second delivery lifter, and lifting the new member by the second delivery lifter,
The leading vehicle moves within the construction yard to the position of the first delivery lifter, and the removal member lifted by the first delivery lifter is mounted on the leading vehicle, and the removal member is mounted. A removal member unloading step in which the leading vehicle exits outside the construction yard,
A new member loading step of moving the rear vehicle in the construction yard to a position of the second delivery lifter, and mounting the new member lifted by the second delivery lifter on the rear vehicle;
The rear vehicle equipped with the new member moves in the construction yard to the construction section, and a new member installation step of installing the new member at a planned position of the construction section,
A member updating method, comprising: A predetermined section using one lane of the road bridge is set as a construction yard, a first delivery lifter and a second delivery lifter installed at two locations in the construction yard are used, and a plurality of A method of updating a component of a road bridge in a construction section in the construction yard using a train group composed of lorries,
The first delivery lifter and the second delivery lifter installed in front of the construction section each have a traffic space through which a lorry can pass below the load in a state where the load is lifted. It is a lifting machine capable of lifting and hanging the load of a lorry parked in the traffic space,
The row of vehicles is composed of a leading vehicle located at the beginning of a plurality of lorries arranged in a line, a trailing vehicle located at the rear, and an intermediate vehicle located between the leading vehicle and the trailing vehicle. While being placed in the construction yard in a region in front of the construction section,
On the intermediate vehicle, two new members newly installed in the construction section are mounted,
A removing step of removing components of the road bridge in the construction section,
A first removal member temporary loading step of mounting the two removal members removed in the removal step on the trailing vehicle near the construction section;
The rear vehicle equipped with the removal member moves in the construction yard to the position of the first delivery lifter, and the first delivery lifter lifts one removal member of the rear vehicle, A removing member lifting step of moving in the construction yard to a position of the second delivery lifter, and the second delivery lifter lifting one remaining removal member of the rear vehicle;
The leading vehicle moves within the construction yard to the position of the first delivery lifter and the second delivery lifter, and removes the removal member that the first delivery lifter and the second delivery lifter lift. A first removal member unloading step in which the first vehicle mounted on the leading vehicle and mounted with the two removal members exits outside the construction yard;
After the first removed member temporary loading step, again, a second removed member temporary loading step of mounting the two removed members removed in the removing step on the rear vehicle near the construction section,
The rear vehicle equipped with the removal member moves in the construction yard to the position of the first delivery lifter, and the first delivery lifter lifts one removal member of the rear vehicle. Moving the intermediate vehicle equipped with the new member in the construction yard to the position of the second delivery lifter, and lifting the single new member by the second delivery lifter. When,
The trailing vehicle equipped with one removal member moves in the construction yard to the position of the second delivery lifter, and the new member of the second delivery lifter is mounted on the trailing vehicle. The removal member of the tail vehicle is lifted by the second delivery lifter, and the intermediate vehicle equipped with one new member is moved in the construction yard to a position of the first delivery lifter. Loading and unloading a new member of the first delivery lifter on the intermediate vehicle and lifting the new member of the intermediate vehicle by the first delivery lifter;
The intermediate vehicle equipped with one removal member moves in the construction yard to the position of the second delivery lifter, and the removal member lifted by the second delivery lifter is mounted on the leading vehicle. And a second removal member unloading step in which the intermediate vehicle equipped with the two removal members exits outside the construction yard;
The rear vehicle equipped with one new member moves in the construction yard to the position of the first delivery lifter, and the new member lifted by the first delivery lifter is mounted on the rear vehicle. New member loading process,
A new member installation step of moving the tail vehicle equipped with the two new members into the construction yard to the construction section and installing the new member at a planned position of the construction section;
A member updating method, comprising: When the removal member is mounted on the rear vehicle in the construction section, the first lifting device and the second lifting device are used,
The first lifting device and the second lifting device are configured to include a lifter and a lifting mechanism,
The lifter is configured to include four columns that support a load and can expand and contract vertically, and has a traffic space through which a lorry can pass below the load in a state where the load is lifted,
The hanging load mechanism includes a hanging rope, a hanging jig fixed to a tip of the hanging rope, and a power unit,
When the removing member is mounted on the trailing vehicle in the construction section, the lifting rope is wound up by the power means of the first lifting device and the second lifting device to lift the lifting rope. Lifting the removal member gripped by a tool, and the power means of the second lifting device lowers the suspension rope in a state where the removal member is lifted by the power means of the first lifting device. Moving the removing member to below the first lifting device, and suspending the removing member on the trailing vehicle with the first lifting device;
The member updating method according to any one of claims 6 to 8, wherein: In the new member installation step, the new member is installed at a planned position of the construction section using a first lifting device and a second lifting device,
The first lifting device and the second lifting device are configured to include a lifter and a lifting mechanism,
The lifter is configured to include four columns that support a load and can expand and contract vertically, and has a traffic space through which a lorry can pass below the load in a state where the load is lifted,
The hanging load mechanism includes a hanging rope, a hanging jig fixed to a tip of the hanging rope, and a power unit,
In the new member installation step, the first member and the second lifting device wind the respective suspension ropes by the power means of the second lifting device, and thereby the new member gripped by the suspension jig is removed. Lifting from the trailing vehicle, the trailing vehicle moves out of the construction section, and the power unit of the second lifting device is lifted by the power unit of the first lifting device while the new member is lifted by the power unit of the first lifting device. Lowering the hanging rope to move the new member below the first lifting device, and lowering the new member to a planned position with the first lifting device;
The member updating method according to any one of claims 6 to 9, wherein: When lifting or hanging the removed member or the newly installed member in the construction section, using a lifting device,
The lifting device includes a lifter, a bridge girder, and a lifting mechanism,
The lifter is configured to include four pillars that support a load and can expand and contract vertically, and a gantry connected to the four pillars, and lift the cargo in a state where the cargo is lifted. There is a traffic space through which a lorry can pass,
The erection girder is fixed to the gantry of the two or more lifters, and is bridged between the lifters,
The hanging load mechanism has a hanging rope, a hanging jig fixed to a tip of the hanging rope, and a power unit, and is attached to the erection girder so as to be able to traverse along the erection girder,
Further, the lifting device is installed so that the erection girder is disposed above the construction section,
The member updating method according to any one of claims 6 to 8, wherein:

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