Abstract

A construction process for quickly and integrally replacing a damaged pavement slab without suspending flights of civil aviation is provided according to embodiments of the present application, including: a first stage: reinforcing a foundation of a damaged pavement slab by grouting; and a second stage: integrally replacing the damaged slab with early-strength and quick-drying concrete. The construction process of fast overall replacement of a damaged pavement slab in civil aviation non-suspend construction provided by the embodiments of the present application solves the limitations of the traditional pavement slab repair process well. The present application first reinforces the damaged pavement slab foundation through grouting construction to solve the problems of slab bottom vacancy, foundation settlement, and insufficient bearing capacity of the base layer; then uses the early-strength rapid-curing concrete suitable for rapid overall slab replacement of the pavement to carry out overall replacement construction for the damaged pavement slab.

IPC Classes  ?

• E01C 7/14 - Concrete paving
• E01C 3/00 - Foundations for pavings

Abstract

A rapid integral slab replacement construction process for a damaged pavement slab in civil aviation non-stop aviation construction. The rapid integral slab replacement construction process comprises the following steps: stage 1, reinforcing a damaged pavement slab foundation by means of grouting construction; and stage 2: carrying out integral slab replacement construction on the damaged pavement slab by utilizing early-strength quick-drying concrete. Stage 1 involves reinforcing the damaged pavement slab foundation, so as to solve the problems of a slab bottom void, foundation settlement, and the capacity for bearing a base layer being insufficient; and stage 2 involves carrying out integral slab replacement construction on the damaged pavement slab, so as to effectively solve a contradiction between the construction period and the construction quality. The rapid integral slab replacement construction process has the advantages of a significantly shortened construction period, improved construction quality, reduced apparatuses and labor input, etc.

IPC Classes  ?

• E01C 7/14 - Concrete paving
• E01C 3/00 - Foundations for pavings

Abstract

A bridge erecting machine, comprising a main girder (101) and a supporting device; the supporting device comprises an end supporting device (106) and a side supporting device; the side supporting device comprises a side supporting leg, and the side supporting leg is connected to the main girder (101) and configured for supporting the main girder (101) from a top face of a side bridge pier; the end supporting device (106) is connected to at least one end of the main girder (101), and the side supporting leg (106) is configured for supporting the main girder (101) from the ground. The bridge erecting machine solves the technical problem in the prior art in which the bridge erecting machine requires a vehicle to be driven to a position beside a middle bridge pier, thereby achieving the technical effect that the vehicle does not need to be driven to the position beside the middle bridge pier and then hoisted.

IPC Classes  ?

• E01D 21/10 - Cantilevered erection

Abstract

An ultra-long steel strand (6) threading construction method for a continuous beam, comprising the steps of: threading a glass fiber (3) through a continuous beam (1) by means of a glass fiber threading machine; after the glass fiber (3) passes through the continuous beam, connecting the glass fiber (3) and a first steel wire rope (4), manually pulling same after connection, and using the first steel wire rope (4) as a lead; connecting the first steel wire rope (4) and a second steel wire rope (5) in a snap-fit manner, checking a joint, arranging a winch (9) at a small mileage side, using the winch (9) to perform construction, and pulling the second steel wire rope (5) by means of the first steel wire rope (4); and connecting the second steel wire rope (5) and a plurality of steel strands (6) in a snap-fit manner, dragging the plurality of steel strands (6) from the interior of a corrugated pipe by means of the winch (9), and fixing the plurality of steel strands (6) by means of an anchor. The present invention solves the problem in the prior art that during construction of a large-span bridge, it is very difficult to perform steel strand threading construction, the construction equipment is simple and the material is conventional and easily acquired; the construction method is simple and easy to implement, and completes tasks that cannot be completed by the largest threading machine; and the construction speed is high, and the whole threading of steel strands can be completed at one time.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

A split air cabin ventilation system for construction of tunnel inclined shafts, including a first air cabin and a second air cabin which are both in a hollow closed structure with an air inlet end and an air outlet end respectively at both sides. The two air outlet ends are arranged away from each other. An end of the split air cabin is provided with an air inlet, and the other end is provided with an air outlet. The air inlet is connected to an air source, and the air outlet is connected to the air inlet ends of the first and second air cabins, respectively. The air inlet end of the first air cabin is connected to another air source.

IPC Classes  ?

• E21F 1/00 - Ventilation of mines or tunnelsDistribution of ventilating currents
• E21F 1/14 - Air partitionsAir locks
• E21F 1/08 - Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
• E21F 5/00 - Means or methods for preventing, binding, depositing or removing dustPreventing explosions or fires
• E21D 9/02 - Driving inclined tunnels or galleries

Abstract

A monitoring meter (4) installing device and installing method. The monitoring meter (4) installing device comprises: a main pipe (1), the main pipe (1) comprising a main body sluice valve (13), a first pipe body (11) adapted to be connected to a shield pipe segment (8), and a second pipe body (12) adapted to be connected to a drilling machine (7), and the first pipe body (11) and the second pipe body (12) being connected by means of the main body sluice valve (13); a branch pipe (2), one end of the branch pipe (2) being arranged on the second pipe body (12), and the other end of the branch pipe (2) extending in a direction away from the shield pipe segment (8); and an installing part (3), adapted to be connected to a monitoring meter (4), and suitable for pushing the monitoring meter (4) to move in the main pipe (1) and the branch pipe (2). According to the monitoring meter (4) installing device and installing method, a water pressure monitoring device at the back of a shield pipe segment (8) can be installed effectively and reliably, water gushing risks of in-hole drilling in a pressurized-water environment are reduced, and safety is improved.

IPC Classes  ?

• E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries
• G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges