Abstract: The present invention relates to a wireless communication relay system for an unmanned vehicle includes a control station providing as a console for an implementation of a remote control; an unmanned mission vehicle operated in a first area and receiving the remote control from the control station through a communication link; and an unmanned relay vehicle operated in a second area and in the communication link between the control station and the unmanned mission vehicle.

Abstract: The present invention relates to a wireless communication relay system for an unmanned vehicle includes a control station providing as a console for an implementation of a remote control; an unmanned mission vehicle operated in a first area and receiving the remote control from the control station through a communication link; and an unmanned relay vehicle operated in a second area and in the communication link between the control station and the unmanned mission vehicle.

Abstract: A bridge lifting support bracket is disclosed, which comprises a supporting mechanism, comprising a bracket having a depressed area at a face thereof and a lifting portion disposed at two sides of the bracket, respectively; and at least two jacks, disposed on a bottom face of the lifting portions, respectively. As such, a space for receiving a jack properly is secured by digging out a space of a concrete protection layer of a lower structure and using a supporting mechanism cooperating therewith when only a small space or a closely tight bonding with no seam existing between a bridge and a pier, whereby a lifting process of the bridge may be safely performed.

Abstract: A synchronous control integrated system for bridge lifting, comprising a monitor mechanism; an oil pressure control mechanism, connected to the monitor mechanism; a plurality of jacks, each connected to the oil pressure mechanism, respectively; and a sensor mechanism, connected to the monitor mechanism. As such, a shift variance generated by girders of a bridge may form a signal by using a sensor mechanism and jacks together transmitted on line to a monitor mechanism as a control parameter, so that the monitor mechanism may have an accurate adjustment and monitoring on an oil pressure control mechanism and the jacks, whereby completing the synchronous control operation for the bridge lifting course. Furthermore, the bridge lifting construction may have its improved accuracy and safety.

Abstract: A bridge lifting support bracket is disclosed, which comprises a supporting mechanism, comprising a bracket having a depressed area at a face thereof and a lifting portion disposed at two sides of the bracket, respectively; and at least two jacks, disposed on a bottom face of the lifting portions, respectively. As such, a space for receiving a jack properly is secured by digging out a space of a concrete protection layer of a lower structure and using a supporting mechanism cooperating therewith when only a small space or a closely tight bonding with no seam existing between a bridge and a pier, whereby a lifting process of the bridge may be safely performed.

Abstract: A synchronous control integrated system for bridge lifting, comprising a monitor mechanism; an oil pressure control mechanism, connected to the monitor mechanism; a plurality of jacks, each connected to the oil pressure mechanism, respectively; and a sensor mechanism, connected to the monitor mechanism. As such, a shift variance generated by girders of a bridge may form a signal by using a sensor mechanism and jacks together transmitted on line to a monitor mechanism as a control parameter, so that the monitor mechanism may have an accurate adjustment and monitoring on an oil pressure control mechanism and the jacks, whereby completing the synchronous control operation for the bridge lifting course. Furthermore, the bridge lifting construction may have its improved accuracy and safety.

Abstract: A thin jack device for bridge lifting is disclosed, comprising a base seat; a lifting unit, movably connected with the base seat; and a displacement sensor, disposed at a side of the base seat. In this manner, an arrangement may be applied when a gap altitude between a bridge girder and a pier is insufficient to reduce a risk possibility of violation of the bridge and pier, and a displacement sensors attached to stroke is used to monitor a raised altitude to reduce a mechanical error to promote safety and thereby sufficiently the current pier structure to save a temporarily used pier or a frame based design and construction, whereby increasing the construction safety and decreasing the construction cost.

Abstract: A bridge lifting support bracket is disclosed, which comprises a supporting mechanism, comprising a bracket having a depressed area at a face thereof and a raising portion disposed at two sides of the bracket, respectively; and at least two jacks, disposed on a bottom face of the raising portions, respectively. As such, a space for receiving a jack properly is secured by digging out a space of a concrete protection layer of a lower structure and using a supporting mechanism cooperating therewith when only a small space or a closely tight bonding with no seam existing between a bridge and a pier, whereby a raising process of the bridge may be safely performed.

Abstract: A penetrating radiation is used to examine a prestressed tendon in a prestressed concrete. A comparing object is used, whose position and size are known in advance. A magnifying rate of an image size of the comparing object projected on an imaging device is calculated. By using the magnifying rate and by comparing the image sizes of the prestressed tendon and the comparing object projected on the imaging device, the defect size of the prestressed tendon can be figured out.

Abstract: Gamma rays, X-rays or ionizing irradiations from two radiation sources penetrate through a steel bar in a reinforced concrete structure. Images of the steel bar are thus projected on two films. Through geometric relationships between the images and the steel bar itself, thicknesses between the steel bar and surfaces of the reinforced concrete structure are obtained. The position of the steel bar obtained according to the present invention is reliable and accurate. And the data obtained can be used for structure safety.

Abstract: The present invention uses a penetrative radiation to form images of a reinforced concrete which has a steel bar. By recording a relationship between radioactive energies and thicknesses of the reinforced concrete, a radioactive energy curve for the reinforced concrete is built. The present invention can be used for an on-site detecting of a reinforced concrete.

Abstract: A penetrating radiation is used to examine a steel bar in a reinforced concrete coordinated with a comparing object. The position and size of the comparing object are known in advance. At first, the steel bar and the comparing object are projected on an imaging device. Then, a magnifying rate of an image size of the comparing object shown on the imaging device is calculated. By using the magnifying rate and by comparing the image sizes of the steel bar and the comparing object on the imaging device, the defect size of the steel bar can be figured out.

Abstract: The present invention is for measuring the diameter of a steel reinforcement rod in a concrete. Therein, a comparing rod is deposed outside of the construction and is corresponding to the steel rod to make the magnification rates of the steel rod and the comparing rod be the same. Then, the comparing rod and the steel rod are irradiated by a radioactive-ray source. And, then, a display is provided to show images of the rods to evaluate the size and the defect of the steel rod by the size and the shape of the comparing rod, so that the examination accuracy can be greatly improved and the examination result can be a reference for evaluating the construction safety.

Abstract: Gamma rays, X-rays or ionizing irradiations from two radiation sources penetrate through a steel bar in a reinforced concrete structure. Images of the steel bar are thus projected on two films. Through geometric relationships between the images and the steel bar itself, thicknesses between the steel bar and surfaces of the reinforced concrete structure are obtained. The position of the steel bar obtained according to the present invention is reliable and accurate. And the data obtained can be used for structure safety.

Abstract: A gamma ray, an X-ray or an ionizing irradiation penetrates through a steel bar in a reinforced concrete structure. An image of the steel bar is thus projected on a film. Through geometric relationships between the image and the steel bar itself, the size of the steel bar is calculated. The size of the steel bar obtained according to the present invention is reliable and accurate. And the data obtained can be used for structure safety.

Abstract: The present invention measures the strain caused by the shrink and expansion from the corrosion and examines the corrosion of a tendon for a long term with high sensitivity to improve the accuracy of the examination.

Abstract: The present invention uses a penetrative radiation to form images of a reinforced concrete which has a steel bar. By recording a relationship between radioactive energies and thicknesses of the reinforced concrete, a radioactive energy curve for the reinforced concrete is built. The present invention can be used for an on-site detecting of a reinforced concrete.

Abstract: A penetrating radiation is used to examine a steel bar in a reinforced concrete coordinated with a comparing object. The position and size of the comparing object are known in advance. At first, the steel bar and the comparing object are projected on an imaging device. Then, a magnifying rate of an image size of the comparing object shown on the imaging device is calculated. By using the magnifying rate and by comparing the image sizes of the steel bar and the comparing object on the imaging device, the defect size of the steel bar can be figured out.

Abstract: A penetrating radiation is used to examine a prestressed tendon in a prestressed concrete. A comparing object is used, whose position and size are known in advance. A magnifying rate of an image size of the comparing object projected on an imaging device is calculated. By using the magnifying rate and by comparing the image sizes of the prestressed tendon and the comparing object projected on the imaging device, the defect size of the prestressed tendon can be figured out.

Abstract: The present invention examines coherence integrity of a joint interface between a construction and a reinforcing plate steel in a to-be-examined area by comparing a waveform obtained in advance with a back echo waveform received.