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A platform for research: civil engineering, architecture and urbanism
Foam concrete anti-collision wall applied in tunnel
The problems in the prior art are solved, the invention provides a foam concrete anti-collision wall applied to the interior of a tunnel; the foam concrete anti-collision wall has the advantages that high strength and deformability of foam concrete are fully utilized, and the foam concrete is composed of the following raw materials: 60%-70% of ordinary Portland cement, 25%-40% of fly ash, 0.05%-0.15% of carbon fibers and 40%-60% of a foaming agent. A standard test piece with the diameter of 5 cm and the height of 10 cm is prepared, the elastic coefficient of the standard test piece after 28-day standard curing is k, and a foam concrete anti-collision wall buffering distance formula and the anti-collision wall thickness d are deduced through the Hooke's law and the kinetic energy theorem. A construction method comprises the steps that in a secondary lining process, a pair of reserved bolts are axially arranged at the positions, 55 cm and 105 cm away from a bottom plate, of the tunnel wall every 0.5 m, the exposed length of each bolt is (d+3) cm, and the diameter of each bolt is 2.5 cm; the length and the width of each prefabricated foam concrete anti-collision wall are 1 m, the thickness is d, and at the distance of 25 cm away from the long side and the width side, round holes with the diameter of 2.5 cm are reserved; and the prefabricated foam concrete anti-collision wall is assembled and tightly attached to the arch wall, the bolts are tightened, and construction is completed.
本发明解决了现有技术存在的问题，提供了一种应用于隧道内的泡沫混凝土防撞墙，它具有充分利用泡沫混凝土强度较高，形变能力较强的优点，所述泡沫混凝土有以下原料组成60%~70%普通硅酸盐水泥，25%~40%粉煤灰，0.05%~0.15%碳纤维，40%~60%发泡剂。制备直径为5cm，高为10cm标准试件在28d标准养护后的弹性系数为k，通过胡克定律及动能定理推导泡沫混凝土防撞墙缓冲距离公式及防撞墙厚度d。施工方法为：对二次衬砌过程中距离底板55cm、105cm隧道壁处轴向每间隔0.5m设置一对预留螺栓，螺栓露出长度均为(d+3)cm，直径为2.5cm；预制泡沫混凝土防撞墙，每块长宽均为1m，厚度为d，距长宽边各25cm，预留直径为2.5cm的圆孔；装配预制泡沫混凝土防撞墙，紧密贴合拱壁并拧紧螺栓，施工完成。
Foam concrete anti-collision wall applied in tunnel
The problems in the prior art are solved, the invention provides a foam concrete anti-collision wall applied to the interior of a tunnel; the foam concrete anti-collision wall has the advantages that high strength and deformability of foam concrete are fully utilized, and the foam concrete is composed of the following raw materials: 60%-70% of ordinary Portland cement, 25%-40% of fly ash, 0.05%-0.15% of carbon fibers and 40%-60% of a foaming agent. A standard test piece with the diameter of 5 cm and the height of 10 cm is prepared, the elastic coefficient of the standard test piece after 28-day standard curing is k, and a foam concrete anti-collision wall buffering distance formula and the anti-collision wall thickness d are deduced through the Hooke's law and the kinetic energy theorem. A construction method comprises the steps that in a secondary lining process, a pair of reserved bolts are axially arranged at the positions, 55 cm and 105 cm away from a bottom plate, of the tunnel wall every 0.5 m, the exposed length of each bolt is (d+3) cm, and the diameter of each bolt is 2.5 cm; the length and the width of each prefabricated foam concrete anti-collision wall are 1 m, the thickness is d, and at the distance of 25 cm away from the long side and the width side, round holes with the diameter of 2.5 cm are reserved; and the prefabricated foam concrete anti-collision wall is assembled and tightly attached to the arch wall, the bolts are tightened, and construction is completed.
本发明解决了现有技术存在的问题，提供了一种应用于隧道内的泡沫混凝土防撞墙，它具有充分利用泡沫混凝土强度较高，形变能力较强的优点，所述泡沫混凝土有以下原料组成60%~70%普通硅酸盐水泥，25%~40%粉煤灰，0.05%~0.15%碳纤维，40%~60%发泡剂。制备直径为5cm，高为10cm标准试件在28d标准养护后的弹性系数为k，通过胡克定律及动能定理推导泡沫混凝土防撞墙缓冲距离公式及防撞墙厚度d。施工方法为：对二次衬砌过程中距离底板55cm、105cm隧道壁处轴向每间隔0.5m设置一对预留螺栓，螺栓露出长度均为(d+3)cm，直径为2.5cm；预制泡沫混凝土防撞墙，每块长宽均为1m，厚度为d，距长宽边各25cm，预留直径为2.5cm的圆孔；装配预制泡沫混凝土防撞墙，紧密贴合拱壁并拧紧螺栓，施工完成。
Foam concrete anti-collision wall applied in tunnel
一种应用于隧道内的泡沫混凝土防撞墙
LI HAICHUAN (author) / ZHANG SHUKUN (author) / FENG DIANZHI (author)
2022-01-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
/
E21D
SHAFTS
,
Schächte
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