Recently，The Housihe River Bridge Section of the Zhengzhou-Luoyang Expressway Construction Project，Two sets of Trinity rotary drilling rigs are fully operated，Work nearly 23 hours a day。The equipment does not stop，Operator works in two shifts，To ensure the smooth completion of the pile foundation of the Housi River Bridge.。

 

 

Zhengzhou-Luoyang Expressway，Short name“Zhengzhou-Luoyang Expressway” Yes《Planning of expressway network in Henan Province（2021—2035）》New expressway construction projects in China，It belongs to one of the radiation routes of Zhengzhou metropolitan area.。

The total length of the project route is 99.215 kilometers，One super-large bridge is set along the whole line.，55 bridges，There are 13 medium bridges，68 culverts；Set up 7 tunnels；The ratio of bridge to tunnel is about 29.06%。

Housi River Bridge is a prestressed concrete cable-stayed bridge with single tower and double cable planes.，The design is divided into frames。The bridge is a tower、Beam、Pier consolidation system，The main beam is a ribbed slab concrete main beam.，The stay cable is a parallel steel wire finished cable.；Reinforced concrete is used for the cable tower. “A” Type cable tower，Left tower height 207.5m、Height of right tower: 211m；The foundation is bored pile.，30 cables with a diameter of 2 are arranged under the cable tower.0mRock-socketed pile，Pile length 25m。Full width of single deck 19.5m，Beam height 2.4m，The guardrail at the junction of bridge and tunnel gradually narrows inward。

 

 

The geomorphological unit of the bridge location area is located in the middle and low mountain landform.，Micro-landform is river valley landform.，The terrain is undulating.，Both sides of the river valley are steep slopes and rock walls.。Silty clay in construction section、Gravelly soil，The lower part is limestone。The pile diameter is 2m，Pile depth 25m，The construction is difficult.。

Sany large rotary drilling rig，Hard rock drilling energyStrong，Construction efficiencyHigh。BigImported engine with large power and displacement，Efficient power output，The torque of the power head is large，And that drill efficiency is high，Make the hole quickly。Faced with complex geological conditions，The output can be stabilized。Uninterrupted construction throughout the day，Service engineering staff on call，Escort your equipment construction。