1、ROADGUARD BARRIER SYSTEM The roadguard barrier, 6 feet long, 3.5 feet high, 2 feet wide at base, with its patented design, is the only barrier of its type that self locks without the need for additional assistance. No barrier, other than the roadguard barrier, can self-lock without the need of addit
2、ional apparatus, such as a cable, strap, rod or coupler. In addition, the roadguard barrier, because of its unique patented design allows for curved configurations of up to 15 degrees at each barrier connection, in either direction, while remaining locked to the adjacent barrier. No other barrier ca
3、n make that claim! Also, the roadguard barrier is designed for the addition of signs screens and flashers because of the built in slots for such devises and is easier to maneuver because of its weight and two carrying slots contained in each barrier. The patented interior design of the roadguard bar
4、rier prevents bulging and keeps its sides straight and trim while maintaining a weight of only 125 lbs. Empty but a secure 1675 lbs. The roadguard corner connector barrier is designed for use with the roadguard barrier as a connecting barrier unit to allow for either left or right angle turns, or bo
5、th simultaneously, of between 75 to 105 degrees while locking together all connecting barriers. In addition, the corner connector barrier allows for the initial roadguard barrier line to continue after connecting barrier line extensions to the left and/or the right. Lightweight and easy to handle, t
6、he roadguard corner connector barrier is 2 feet in length and width and 3.5 feet in height, designed to correspond with the roadguard barrier. Directly beneath the filling hole of the roadguard corner connector barrier is a pin extending upward internally from the bottom of the barrier to secure fir
7、mly a pole or pipe that can be inserted downward through the filling hole. Said pole or pipe can be used to attach signage, privacy screens or security panels that extend above the barrier line height. The roadguard highway assembly is a reinforcement system for highway barriers that distribute and
8、transfer forces that may occur upon impact of a vehicle so that the overall highway barrier system will have greater strength and integrity. The roadguard highway assembly system meets all NCHRP 350, Test Level 3 Truck and Car Crash Test Specifications, and is approved by the FHWA for use on highway
9、 construction projects where the posted vehicle speed in a work zone can be as high as 62-mph/100kph. The roadguard highway assembly is a fabricated steel assembly designed to easily mount to the roadguard barriers. This ASSEMBLY provides two distinct functions: Providing a strong and resilient oute
10、r surface to resist the wheel and bumper of a striking vehicle, and to link the barriers more securely to each other and create a very robust linear system such that the force of a striking vehicle will be distributed over many barriers, minimizing the lateral movement at the point of impact. The ro
11、adguard security panel is used for perimeter security, safety, crowd control and general site protection. These 6 x 4 chain link fence panel units install firmly on a roadguard barrier to give a stable 8 foot high continuous, unbroken protective fence for all security and safety needs. Optional soli
12、d material, screen, or interwoven chain link panels are available. Our study area lies in the north of modern delta of the Huanghe River and it was formed by the river way of Diaokou in 1964-1976.The Huanghe River has the largest content of silt and may transport about 10.6Gt/a silt into the Bohai s
13、ea. The sub-delta was built quickly under the supply of abundant sediments. The rapid accumulation in the delta always makes the river course to be diverted frequently. The abandoned delta would be eroded and retreated rapidly after diversion because the lack of supply. The gradient of the coastal s
14、lope in the delta is very gentle, the water depth is only 10m in the place about 10km apart from the coastal bank. A few of kilometers-wide tidal flat would be exposed during ebb tide that makes us work on the tidal flat conveniently. The sediments on the tidal flat are mainly composed of fine sands
15、, silt and clay. With the development of economic construction, various kinds of modernized traffic facility, is it pay to set up such as expressway , city, overpass function blown strengthen day by day in communications and transportation, the development of and the communications and transportatio
16、n has caused the rapid rising of the traffic accident, traffic Safe and own through becoming a great world difficult problem The rigidity guardrail is offended the guardrail form not basically out of shape by the automobile, generally point the concept of adopting safe appearance of guardrail of mod
17、es in Chinese operatic music of concrete wall of concrete guardrail , through the different sides of slope of appearance mainly, make the automobile moderate , it is high to climb, change direction, last making not colliding kinds of guardrail angle smaller than 100 car not medium-sized making a cha
18、nge effective to, make automobile receive lighter damage, as angle of colliding, collide when relatively heavy speed having, the automobile damages seriously. According to rigidity with can divide into flexible guardrail , semi-rigid guardrail and rigidity guardrail safe form of guardrail. 1)The fle
19、xible guardrail generally points the cable guardrail , is one kind with structure that fixes of many roots on the pillar of cable of exerting prestressing force, totally relying on the stress of drawing of the cable to resist the vehicle and collide, the form is beautiful , not oppressing the sense while going, but the sight leads worse, the fabrication cost is relatively high, do not generally use. 2)The semi-rigid guardrail generally points the roof beam type guardrail , is a kind of roof beam
