New Type Bailey Bridge With Factory Price Q345-Q460C Grade Double Lane 7.35m

New Type Bailey Bridge/with Factory Price Ce Bailey Bridge

When building a 321-type Bailey bridge in mountainous areas, it is crucial to ensure that the bridge base is stable. Here are some specific methods and precautions:

1. **Foundation bearing capacity inspection**
- **Soil condition assessment**: Before building a Bailey bridge, the soil conditions at the bridge base must be assessed to ensure that the soil is solid. If the soil bearing pressure does not meet the design requirements, the foundation under the bridge base must be expanded or reinforced.
- **Angle of repose pile setting**: When the bank slope is steep (greater than the angle of repose), the position of the angle of repose pile must be calculated and set according to the formula.

2. **Foundation reinforcement method**
- **Enlarge the foundation**: If the soil conditions are not good, the bearing capacity can be increased by expanding the foundation area.
- **Concrete reinforcement**: Pour the concrete foundation at the bridge base to ensure that the foundation is deep into the stable stratum and provides sufficient support.
- **Pile foundation reinforcement**: When necessary, the method of driving pile foundation can be used to enhance the stability of the foundation.

3. **Bridge seat design and construction**
- **Bridge seat axle beam**: The bridge end column is supported on the bridge seat axle beam, which is divided into multiple sections. The appropriate bridge seat is selected according to the number of bridge rows.
- **Seat plate setting**: The seat plate should be set at the seat plate axis position, and the seat plate position should be properly excavated to reduce the bridge deck elevation, generally making the height difference between the bridge deck and the road surface no more than 30 cm.

4. **Precautions during construction**
- **Construction personnel safety**: Construction personnel must wear safety helmets and safety belts, and it is strictly forbidden to work on the rack after drinking. When using a crane to lift and remove Bailey piers, a special person should be assigned to direct the crane, and it is strictly forbidden for the crane boom to collide with the Bailey beam and its foundation.
- **Roller setting**: Rollers are set at the marked roller position, and a sample plate should be placed underneath. Only one row of trusses is allowed to pass through each rock, and the distance between the rock and the bearing plate is about 1.0 meter, and at least not less than 0.75 meter.

Through the above measures, the stability of the bridge base foundation can be ensured when building a Type 321 Bailey bridge in mountainous areas, thereby ensuring the safety and stability of the bridge.

Specifications:

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CB321(100) Truss Press Limited Table
No.	Lnternal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Standard Truss Moment(kN.m)	788.2	1576.4	2246.4	3265.4	1687.5	3375	4809.4	6750
321(100)	Standard Truss Shear (kN)	245.2	490.5	698.9	490.5	245.2	490.5	698.9	490.5
321 (100) Table of geometric characteristics of truss bridge(Half bridge)
Type No.	Geometric Characteristics	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	DDR	SSR	DSR	TSR	DDR
321(100)	Section properties(cm3)	3578.5	7157.1	10735.6	14817.9	7699.1	15398.3	23097.4	30641.7
321(100)	Moment of inertia(cm4)	250497.2	500994.4	751491.6	2148588.8	577434.4	1154868.8	1732303.2	4596255.2

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CB200 Truss Press Limited Table
NO.	Internal Force	Structure Form
		Not Reinforced Model				Reinforced Model
		SS	DS	TS	QS	SSR	DSR	TSR	QSR
200	Standard Truss Moment(kN.m)	1034.3	2027.2	2978.8	3930.3	2165.4	4244.2	6236.4	8228.6
200	Standard Truss Shear (kN)	222.1	435.3	639.6	843.9	222.1	435.3	639.6	843.9
201	High Bending Truss Moment(kN.m)	1593.2	3122.8	4585.5	6054.3	3335.8	6538.2	9607.1	12676.1
202	High Bending Truss Shear(kN)	348	696	1044	1392	348	696	1044	1392
203	Shear Force of Super High Shear Truss(kN)	509.8	999.2	1468.2	1937.2	509.8	999.2	1468.2	1937.2

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CB200 Table of Geometric Characteristics of Truss Bridge(Half Bridge)
Structure	Geometric Characteristics
	Geometric Characteristics	Chord Area(cm2)	Section Properties(cm3)	Moment of Inertia(cm4)
ss	SS	25.48	5437	580174
	SSR	50.96	10875	1160348
DS	DS	50.96	10875	1160348
	DSR1	76.44	16312	1740522
	DSR2	101.92	21750	2320696
TS	TS	76.44	16312	1740522
	TSR2	127.4	27185	2900870
	TSR3	152.88	32625	3481044
QS	QS	101.92	21750	2320696
	QSR3	178.36	38059	4061218
	QSR4	203.84	43500	4641392

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Advantage

Possessing the features of simple structure,
convenient transport, speedy erection
easy disassembling,
heavy loading capacity,
great stability and long fatigue life
being capable of an alternative span, loading capacity