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Selection of Surgical Approach and Clinical Significance of Lower Cervical Spine Injuries Guided by SLIC Scoring System

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Surgical Science 2023年第12期14卷 695-704页

作者： Xinming Yang Xuyang Zhang Yongli Jia Yanlin Yin Peinan Zhang xingchong du Yeming Wang Chen Chen Department of Orthopedics The First Affiliated Hospital of Hebei North University Zhangjiakou China Graduate School of Hebei North University Zhangjiakou China

Objective: To explore the feasibility and clinical significance of surgical approach selection for cervical spine injury guided by SLIC scoring system. Methods: The clinical data of 75 patients with lower cervical injury surgery from January 2020 to November 2022 were retrospectively analyzed, including 48 males and 27 females. Age: 28 - 65 years old. Causes of injury: 39 cases of traffic accidents, 15 cases of ice and snow sports, 12 cases of falling from high places, 9 cases of heavy objects. There were 12 cases of C3-4, 33 cases of C4-5, 21 cases of C5-6, and 9 cases of C6-7. Time from injury to medical treatment: 4 h - 2 d. Cervical spine X-ray, MRI, MDCT examination and preoperative SLIC score were performed on admission. Anterior approach was performed by subtotal cervical vertebrae resection or discectomy, titanium Cage or cage supported bone grafting and anterior titanium plate fixation. Posterior approach was performed with cervical laminoplasty, lateral mass or pedicle screw fixation and fusion. The combined anterior-posterior operation was performed by the anterior methods+ posterior methods. The time from injury to surgery is 12 h to 3 d. The function before and after operation was evaluated by JOA efficacy evaluation criteria. The correlation between the three surgical approaches and postoperative efficacy and SLIC score was compared. SPSS 22.0 software was used for statistical analysis of the data. Results: In this group of 75 patients, 32 cases of anterior operation, 22 cases of posterior operation and 21 cases of combined operation were followed up for no less than 12 months. There was no significant difference in age, gender, injury cause, injury segment, time from injury to treatment, and time from injury to operation among the three surgical approaches, which were comparable. The SLIC scores of mild, moderate and severe injuries of anterior surgery, posterior surgery and combined anterior and posterior surgery, They were (5.26 ± 1.24, 5.86 ± 1.67,

关键词： Cervical Spine Injury Lower Cervical Injury Classification Score Surgical Route Selection Clinical Significance

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Selection of Surgical Approach and Clinical Significance of Lower Cervical Spine Injuries Guided by SLIC Scoring System

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Surgical Science（外科学） 2023年第12期

作者： Xinming Yang Xuyang Zhang Yongli Jia Yanlin Yin Peinan Zhang xingchong du Yeming Wang Chen Chen

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新工科背景下智能建造工程专业课证融通体系建设

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曲靖师范学院学报 2024年第3期43卷 117-124页

作者：王兴冲曲靖师范学院应用技术学院云南曲靖655011

智能建造作为新一代前沿信息技术与工程施工技术交叉融合的新型建造模式,数字孪生、人工智能、区块链等关键技术正推动着建筑业向数字化和智能化转型升级.培养更多高素质、创新型的智能建造技术技能人才,对我国实现建筑业转型升级和发... 详细信息

智能建造作为新一代前沿信息技术与工程施工技术交叉融合的新型建造模式,数字孪生、人工智能、区块链等关键技术正推动着建筑业向数字化和智能化转型升级.培养更多高素质、创新型的智能建造技术技能人才,对我国实现建筑业转型升级和发展改革具有重大意义.依托“卓越工程+红色工匠”,全面推进“五结合一体化”人才培养模式建设,以模块化、案例式为基础,建设智能开发、智能设计、智能施工、智能管理四类课证融通体系,以期为培养智能建造技术技能人才提供参考.

关键词：智能建造工程智能开发智能设计智能施工智能管理课证融通

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锚定板浅基础桥台抗震性能参数影响分析

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地震工程学报 2024年第3期46卷 575-583页

作者：杨张能陈兴冲马华军王义鲁锦华兰州交通大学土木工程学院甘肃兰州730070

基于浅基础桥台震后调查得到的破坏特点,参考锚定板挡土墙,设计出一种锚定板浅基础桥台。通过拟静力试验与有限元软件ABAQUS研究其抗震性能,探讨钢绞线直径、锚定板布置类型、锚定板面积与台背面积比值、台背填土弹性模量和钢绞线长度... 详细信息

基于浅基础桥台震后调查得到的破坏特点,参考锚定板挡土墙,设计出一种锚定板浅基础桥台。通过拟静力试验与有限元软件ABAQUS研究其抗震性能,探讨钢绞线直径、锚定板布置类型、锚定板面积与台背面积比值、台背填土弹性模量和钢绞线长度变化对结构抗震性能的影响规律。结果表明:有锚定板参与时桥台承载能力有明显提升,耗能能力增强;结构破坏主要由土体失效与钢绞线断裂引起,桥台与锚定板未发生破坏;在一定范围内增大钢绞线直径可以显著提升结构的承载能力,减缓刚度退化;提升台背填土弹性模量可以增加桥台承载能力;锚定板布置方式的改变基本不影响桥台承载能力;锚定板面积与台背面积比值较大时结构初始承载能力较强,但后期刚度退化较快;满足设计要求后钢绞线的长度不宜过大。

关键词：桥台锚定板抗震性能拟静力试验参数分析

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Seismic response of rocking isolated railway bridge piers with sacrificial components

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Earthquake Engineering and Engineering Vibration 2020年第4期19卷 1005-1015页

作者： Xia Xiushen Wu Suiwen Shi Jun Jia Junfeng Chen xingchong Ma Huajun School of Civil Engineering Lanzhou Jiaotong UniversityLanzhou 730070China Department of Civil and Environmental Engineering MS258University of NevadaRenoNV 89557USA College of Architecture and Civil Engineering Beijing University of TechnologyBeijing 100124China

In this study, sacrificial components were incorporated into self-centering railway bridge piers to improve the lateral stiffness. The seismic response of this new detail was investigated. First, the method to compute the initial uplift moment of the self-centering pier is given. In addition, shaking table tests were conducted on a free-rocking pier without sacrificial components, which was used to validate a two-spring numerical model. Good agreement was obtained between the numerical results and experimental data. Furthermore, the validated model was employed to investigate the influence of sacrificial components on the seismic response of rocking piers. For this purpose, two models were developed, with and without sacrificial components. Nonlinear response history analysis was then performed on both models under three historical motions. The results showed that compared to the one without sacrificial components, the rocking pier with sacrificial components has comparable displacement at the top of the pier, and maximum uplift moment at high amplitude motion. Therefore, incorporating sacrificial components into the rocking pier can increase the lateral stiffness at service load and low amplitude frequent earthquakes but can produce comparable response at high seismic excitation. These results provide support for performance-based seismic design of self-centering rocking piers.

关键词： self-centering rocking pier shake table tests sacrificial components nonlinear response history analysis

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铁路桥梁根式挖井基础桥墩的水平承载特性研究

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地震工程学报 2024年第1期46卷 174-181页

作者：李涛陈兴冲王义鲁锦华张熙胤丁明波兰州交通大学土木工程学院甘肃兰州730070

根式基础作为一种新型变截面结构形式,已被证明对于提高沉井基础与桩基础的竖向及横向承载力有明显影响,但其对挖井基础抗震性能的改善作用尚不明确。为明确根键对挖井基础桥墩承载力特征的影响,对一铁路根式挖井基础桥墩进行拟静力试验... 详细信息

根式基础作为一种新型变截面结构形式,已被证明对于提高沉井基础与桩基础的竖向及横向承载力有明显影响,但其对挖井基础抗震性能的改善作用尚不明确。为明确根键对挖井基础桥墩承载力特征的影响,对一铁路根式挖井基础桥墩进行拟静力试验,研究其滞回曲线与骨架曲线特性,通过建立符合试验的有限元模型,讨论不同根键参数对挖井基础桥墩耗能能力及承载力的影响。结果表明根键的存在充分带动了周围土体的参与度,可大大提高挖井基础桥墩的承载力,且随着墩顶位移荷载的增加承载力呈非线性增加。试验及数值模拟均表明:根式挖井基础的破坏主要是由基础周围的土体失效引起的,基础自身并未发生损坏;增加根键的长度可以明显提高根式挖井基础桥墩的承载能力与耗能能力;当根键之间的间距大于根键自身宽度时,增宽根键可明显提高根式挖井基础桥墩的承载能力与耗能能力,而当根键的间距小于自身宽度时,加宽根键对承载力的影响不明显;增加根键的数量能明显提高根式挖井基础桥墩的承载力;在基础底部布置根键的效果并不弱于在侧壁布置,且根键布置在侧壁时不宜靠近土体表面。研究成果可为根式挖井基础在我国铁路桥梁中的应用提供科学依据。

关键词：根式挖井基础桥墩承载力特征拟静力试验参数分析

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某酒店定频空气源热泵空调系统变流量调适实践

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建设科技 2024年第3期 105-108页

作者：缪兴冲张亮亮徐蒙王潇洋江苏四季沐歌有限公司江苏210046

借助对武汉某酒店定频空气源热泵空调系统冷(热)源与末端双变流量一级泵系统调适,分析定频空气源热泵制冷最小流量特性、计算并测试了末端管路供回水压差,分析变频水泵频率特性,制定了空气源热泵与末端用户双变流量系统控制策略,将系统... 详细信息

借助对武汉某酒店定频空气源热泵空调系统冷(热)源与末端双变流量一级泵系统调适,分析定频空气源热泵制冷最小流量特性、计算并测试了末端管路供回水压差,分析变频水泵频率特性,制定了空气源热泵与末端用户双变流量系统控制策略,将系统水流量按照热泵台数分为5个挡位满足热泵最小流量,冷冻水温度控制在6~15℃之间,室内温度24~27℃,相对湿度45%~65%,在满足舒适性条件下,与传统冷源定流量、末端变流量运行相比,水泵节能57.5%,热泵节电6%。

关键词：酒店空调系统冷热源变流量一次泵系统冷(热)源流量挡位调节

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Defect passivation strategy for inorganic CsPbI2Br perovskite solar cell with a high-efficiency of 16.77%

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Journal of Materials Science & Technology 2021年第23期82卷 40-46页

作者： Hua Zhang Jia Zhuang xingchong Liu Zhu Ma Heng Guo Ronghong Zheng Shuangshuang Zhao Fu Zhang Zheng Xiao Hanyu Wang Haimin Li School of New Energy and Materials Southwest Petroleum UniversityChengdu610500China Institute of Photovoltaic Southwest Petroleum UniversityChengdu610500China

All-inorganic halide perovskite solar cells(PSCs)have acquired great progress,especially ***,their photoelectric conversion efficiency(PCE)remains far below the theoretical ***-radiative recombination is one of the important issues affecting the photoelectric performance of the PSCs,and the defective lead ions derived from the evaporation of halide ions in the inorganic perovskite are the principal non-radiative recombination ***,the non-radiative recombination is effectively suppressed by introducing the N-methyl-2-pyrrolidone(NMP)as a Lewis base molecule to passivate the defective lead ***,by adjusting the dosage of NMP,the smooth and pinhole-free CsPbI_(2)Br perovskite film is obtained and the optimized device exhibits a champion PCE of 16.77%with an excellent fill factor(FF)of *** work proves the effectiveness of passivation using Lewis base molecules to prevent non-radiative recombination defects in inorganic perovskite.

关键词： All-inorganic perovskite CsPbI2Br Defect passivation Pb-O bond High PCE

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Seismic response of the long-span steel truss arch bridge with the thrust under multidimensional excitation

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Railway Sciences 2022年第1期1卷 40-55页

作者： Yongliang Zhang Jibei Ma xingchong Chen Yun Wang School of Civil Engineering Lanzhou Jiaotong UniversityLanzhouChina

Purpose–Under different ground motion excitation modes,the spatial coupling effect of seismic response for the arch bridge with thrust,seismic weak parts and the internal force components of the control section of main arch ribs are ***/methodology/approach–Taking a 490 m deck type railway steel truss arch bridge as the background,the dynamic calculation model of the whole bridge was established by SAP2000 *** seismic response analyses under one-,two-and three-dimension(1D,2D and 3D)uniform ground motion excitations were carried ***–For the steel truss arch bridge composed of multiple arch ribs,any single direction ground motion excitation will cause large axial force in the chord of arch *** axial force caused by transverse and vertical ground motion excitation in the chord of arch crown area is 1.4–3.6 times of the corresponding axial force under longitudinal seismic *** in-plane bending moment caused by the lower chord at the vault is 4.2–5.5 times of the corresponding bending moment under the longitudinal seismic *** the bottom chord of arch rib,the arch foot is the weak part of earthquake resistance,but for the upper chord of arch rib,the arch foot,arch crown and the intersection of column and upper chord can all be the potential earthquake-resistant weak *** normal stress of the bottom chord of the arch rib under multidimensional excitation is mainly caused by the axial force,but the normal stress of the upper chord of the arch rib is caused by the axial force,in-plane and out of plane bending ***/value–The research provides specific suggestions for ground motion excitation mode and also provides reference information for the earthquake-resistant weak part and seismic design of long-span deck type railway steel truss arch bridges.

关键词： Railway steel truss arch bridge Seismic response Multidimensional excitation Spatial coupling effect Internal force component

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限位装置对桩基础高墩摇摆反应的影响

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同济大学学报（自然科学版） 2013年第10期41卷 1470-1475页

作者：夏修身陈兴冲同济大学土木工程学院上海200092 兰州交通大学土木工程学院甘肃兰州730070

提出了限位装置的模拟方法,完善了桩基础高墩摇摆隔震的分析模型.基于某铁路高墩桥梁,输入3条强震记录,采用非线性时程分析方法进行了限位装置的影响分析.讨论了限位装置初始间隙及屈服力的变化对墩顶位移与墩底弯矩的影响规律.结果表明... 详细信息

提出了限位装置的模拟方法,完善了桩基础高墩摇摆隔震的分析模型.基于某铁路高墩桥梁,输入3条强震记录,采用非线性时程分析方法进行了限位装置的影响分析.讨论了限位装置初始间隙及屈服力的变化对墩顶位移与墩底弯矩的影响规律.结果表明,限位装置减小墩顶位移的同时会增大墩底弯矩,墩顶位移受限位装置初始间隙的影响较大,墩底弯矩受限位装置初始间隙的影响较小,桩基础高墩的摇摆反应受限位装置屈服力的影响较大.

关键词：高墩桩基础摇摆隔震限位装置

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