Spectrum-effect relationship between HPLC fingerprints and bioactive components of Radix Hedysari on increasing the peak bone mass of rat

The traditional Chinese medicine of Radix Hedysari plays an important role in invigorating gas for ascending, benefiting blood for promoting production of fluid, and promoting circulation for removing obstruction in collaterals, which is consistent with the principle of treatment for osteoporosis. This study is designed to investigate the bioactive components on increasing peak bone mass (PBM) by exploring the spectrum-effect relationship between chromatography fingerprints and effect. Multiple indicators are selected to evaluate the pharmacological activity. In fingerprints, 21 common peaks are obtained, five of which are identified. Furthermore, gray relational analysis (GRA) is a quantitative method of gray system theory and is used to describe the correlation degree of common peaks and pharmacological activities with relational value. 21 components are then divided into three different regions, of which ononin and calycosin play an extremely significant role in increasing PBM. In addition, factor analysis and hierarchical cluster analysis (HCA) are used to screen the optimal producing area for Radix Hedysari. This provides a comprehensive and efficient method to improve the quality evaluation of Radix Hedysari, confirming the bioactive components for PBM-enhancement and further develop its medicinal value.

Spectrum-Effect Relationship Between High Performance Liquid Chromatography Fingerprints and Anticoccidial Activities of a Compound Chinese Medicine

Quality control and screening of active substances in traditional Chinese medicines have been performed using fingerprint analysis. The spectrum-effect relationship between chromatography fingerprints and efficacy of herbal drugs is considered as a potentially useful method for determining active ingredients in complex mixtures. The study was designed to develop a method for determining the bioactive components of a compound Chinese medicine called Tiefeng based on spectrum-effect relationships between high-performance liquid chromatography （HPLC） fingerprints and anticoccidial activities. Four peaks of the established HPLC fingerprint indicate the main bioactive components of this medicine. In addition, pharrnacodynamic atlas was defined and used to assess the anticoccidial activity of Tiefeng from different sources for the first time. We found that the level of anticoccidial activity of Tiefeng was consistent with the degree of similarity between the pharmacodynamic atlas and chromatogram of any sample. Furthermore, effect of this medicine was related with the main active constituents, along with the origin and the harvesting time.

Spectrum-effect relationship of immunologic activity of Ganoderma lucidum by UPLC-MS/MS and component knock-out method

This study was designed to elucidate the immunoregulation of Ganoderma lucidum.HPLC fingerprint and spectrum-effect relationship of G.lucidum were established to predict the active compounds and BP neural network model was established to predict the efficacy.Then the target compounds were identified by high resolution mass spectrometry.The results indicated that there are both enhanced immunity and immunosuppressive components in G.lucidum.BP neural network was trained with the common peak area and immune effi cacy index of G.lucidum fi ngerprint as samples,and a combined evaluation system of G.lucidum fi ngerprint effi cacy was established.The correlation coeffi cient R of BP network model was 0.98643,and the error of pharmacodynamic prediction results was in the ideal range.Eight compounds were identifi ed by high resolution mass spectrometry.The compounds related to immune activity in G.lucidum were determined in this study.

Screening hepatoprotective effective components of Lonicerae japonica Flos based on the spectrum-effect relationship and its mechanism exploring

Lonicerae japonicae Flos(LF)is a kind of healthcare food with hepatoprotective function.This study was designed to explore the spectrum-effect relationships between UPLC fingerprints and the hepatoprotective effects of LF.Fingerprints of ten batches of LF were established by UPLC-PDA.The inhibitory levels of AST and ALT were used as pharmacological indexes,and secoxyloganin,isochlorogenic acid A and isochlorogenic acid C were screened as hepatoprotective active compounds by grey relational analysis(GRA)and partial least squares regression analysis(PLSR).Caspase-3 was obtained by network pharmacology as a key target of hepatoprotective active compounds.Molecular docking is used to explore the interaction between small molecules and proteins.This work provided a general model of the combination of UPLC-PDA and hepatoprotective effect to study the spectrum-effect relationship of LF,which can be used to considerable methods and insight for the fundamental research of the material basis of similar healthcare food.

The spectrum-effect relationship——a rational approach to screening effective compounds, reflecting the internal quality of Chinese herbal medicine

Since the chromatographic fingerprint was introduced, it has been accepted by many countries to assess the quality and authenticity of Chinese herbal medicine （CHM）. However, solely using the chromatographic fingerprint to assay numerous chemicals is not suitable for the assessment of the whole internal quality and pharmacodynamics of CHM. Consequently, it is necessary to develop a rational approach to connecting the chromatographic fingerprint with effective components to assess the internal quality of CHM. For this purpose, a spec^tun-effect relationship theory was proposed and accepted as a new method for the assessment of CHM because of its potential use to screen effective components from CHM. In this paper, we systematically reviewed the application of the spectrum-effect relationship theory in the research of CHM, including research mentality, different chromatographic analysis techniques, data processing technologies, and structure determination.

Toxicity of Five Herbs in Aconitum L. on Tetrahymena thermophila Based on Spectrum-effect Relationship

Objective To explore the active components with toxic effects in five Aconitum L. herbal medicines on Tetrahymena thermophila. Methods The fingerprints of five Aconitum L. herbal medicines were established by ultra-high performance liquid chromatography （UPLC） and the toxicity was evaluated by using a TAM Air Isothermal Calorimeter on Tetrahymena thermophila SB1 10. Results By analyzing the spectrum- effect relationships between UPLC fingerprints and toxic effects, the active components which had the toxic effects were obtained. Conclusion This work provides a general model of the combination of UPLC and microcalorimetry to study the spectrum-effect relationships of the five Aconitum L. herbal medicines, which could be used to evaluate the toxic effects and analyze the principal toxic components of the five Aconitum L. herbal medicines. On the whole, this result provides the experimental basis for the safe use of the five Aconitum L. herbal medicines in clinic.

Identification of anti-inflammatory components in Panax ginseng of Sijunzi Decoction based on spectrum-effect relationship

Objective: This study aimed to identify the main medicinal active components of Panax ginseng(P. ginseng) in the compatibility environment of clinical application. For this purpose, the anti-inflammatory ingredients of P. ginseng were investigated based on its therapeutic effect in Sijunzi Decoction(SJD) which is a widely used traditional Chinese formula.Methods: The fingerprints of 10 batches of SJD consisting of different sources of P. ginseng were established by UPLC technique to investigate the chemical components. At the same time, the antiinflammatory effects of these components were evaluated by dextran sulfate sodium-induced ulcerative colitis mouse model. Grey relational analysis was applied to explore the correlation degree between fingerprints and anti-inflammatory effects in SJD. Lipopolysaccharide-stimulated RAW264.7 murine macrophages were established to evaluate the anti-inflammatory action of the screened effective substances of P. ginseng.Results: According to grey relational analysis, notoginsenoside R1, ginsenoside Rg2 and ginsenoside Rb3of P. ginseng were the major anti-inflammatory contributions in SJD. They had been proven to be closely associated with the anti-inflammatory process of SJD and displayed a close effect compared with SJD by LPS-stimulated RAW264.7 murine macrophages.Conclusion: Our work provides a general strategy for exploring the pharmacological ingredients of P. ginseng in traditional Chinese formulas which is beneficial for establishing the quality standards of traditional herbs in traditional Chinese medicine prescription based on their clinical therapeutic effect.

乙酰丙酮铱Ir(acac)_(3)电子结构及光学性质的理论研究

乙酰丙酮铱是一种由过渡金属Ir与乙酰丙酮酸(acetylcaetonato)有机部分组成的过渡金属有机配合物,它是一种重要的绿光磷光材料,同时其也是多种铱系发光材料的组成部分.采用密度泛函理论(DFT)对Ir(acac)_(3)单体及其二聚物的基态几何结构进行了优化,在此基础上考察了它们的振动和红外光谱,并使用CIS方法对它们的激发态性质进行了理论研究.计算得到的单体和二聚物的吸收光谱均在紫外波段,单体的主要吸收峰有260 nm,350 nm,414 nm,二聚物的主要吸收峰有299 nm,353 nm,401 nm.计算得到了二者在乙腈CH_(3)CN溶液中的吸收光谱,与它们气相情况的结果相比,溶剂极性的影响使得电子吸收谱发生蓝移.计算结果表明Horst Kunkely和Arnd Vogler所得光谱中既含有单体的特征光谱,又含有二聚体的特征光谱,证明实验溶液中同时存在乙酰丙酮铱的低聚物,并且二者的组分比能被合理推算.最后,对多聚体的形成机理作了简单讨论.

非均匀强激光场下正负电子对的产生

随着强激光技术领域的不断突破,使得能量转化成物质的施温格过程的实验指日可待.在这样的背景下,在接近实际强激光的模型中理论研究施温格效应至关重要.本文采用量子场论模拟方法在非均匀电场中研究施温格效应的空间特性.首先,发现在能量保持不变的情况下电场的空间尺度显著影响正负电子对的产生率、动量和空间分布.正负电子对的动量和空间分布显示,当电场的空间尺度增大时,因为电场强度变小,所以产生的正负电子对无法及时被分开,抑制正负电子对的产生.最后,用连续性方程研究正负电子对的产生位置分布,发现正负电子对的产生位置分布与电场强度分布是对应的,电子和正电子的产生位置分离一个康普顿波长.此研究结果展示了施温格效应的空间特性,同时解释了弱电场下施温格效应的抑制机制.这些结论在人们常采用的均匀电场近似研究中无法得到.我们的研究对检测施温格实验中的正负电子对具有重要的指导意义.

盐益智仁-盐小茴香药对止泻活性部位筛选及“谱效”关系研究

目的筛选盐益智仁-盐小茴香药对(YZYH)止泻活性部位,并通过“谱效”关系研究推测其药效物质基础和质量标志物。方法制备大鼠脾肾阳虚泄泻模型,测定盐益智仁-盐小茴香药对石油醚(YZYH⁃L)、乙酸乙酯(YZYH⁃M)、水(YZYH⁃H)3部位药效指标,包括体重、肛温、腹泻潜伏期(diarrhea incubation period,DIP)、腹泻指数(diarrheal index,DI)等行为学指标及一氧化氮合成酶(nitric oxide synthetase,NOS)、环磷酸鸟苷(cyclic guanosine monophosphate,cGMP)、磷酸肌酸激酶(creatine phosphate kinase,CPK)等生化指标;建立不同部位高效液相色谱(high performance liquid chromatography,HPLC)图谱,采用灰色关联法分析各部位化学成分与止泻药效指标间的“谱效”关系。结果与空白对照组大鼠相比,15 d后,模型组大鼠出现泄泻证主症关键病理指标—水样便,同时,伴随食后腹胀、食欲不振和弓背等脾阳和肾阳虚泄泻的次症典型特征;给与治疗药物后,泄泻主症和次症均有不同程度的改善,其中阳性药、YZYH⁃M部位第28天后泄泻模型大鼠关键指标DIP极显著延长(P<0.01)、DI极显著降低(P<0.01),以及脾、肾阳虚泄泻的次症典型特征代表性指标体重、24 h摄食、饮水量、肛温和血清生化指标NOS、cGMP、CPK等活性的调节作用均较其它给药组好;“谱效”关系研究表明茴香醛、4号色谱峰等成分与DIP、DI、NOS、cGMP、CPK 5个药效指标的关联度重要。结论YZYH⁃M部位为药对止泻活性部位,其作用机制与抑制胃肠功能亢进和调节机体能量代谢与免疫相关;茴香醛及4号峰作为药对的质量标志物。

六君子汤中理气药陈皮挥发性成分与胃肠动力调节关联性研究

目的从胃动力调节角度分析理气药陈皮挥发性成分在补气方剂六君子汤中的理气作用,比较不同陈化年份的陈皮挥发性成分对脾虚大鼠胃排空和小肠推进的影响,进而挖掘六君子汤中理气药陈皮挥发性成分与调节脾虚大鼠胃肠动力的关联性成分。方法采用GC构建15批不同陈化年份的陈皮药材挥发油类成分的指纹图谱,以胃排空和小肠推进为指标评价陈皮挥发性成分改善胃肠动力作用,采用偏最小二乘回归分析以及灰度分析法分析指纹图谱与调节脾虚大鼠胃肠动力相关性。结果陈皮挥发油成分均可促进胃排空及小肠推进,其在六君子汤中的增益作用强度以5、10年最佳。在15批不同陈化年份的陈皮药材挥发油类成分的GC图谱中,峰3、峰4、峰9为发挥胃肠道调节作用的可能药效成分。结论六君子汤中理气药陈皮挥发性成分通过增益脾虚大鼠胃动力达到理气补气之效,此增益作用为多种有效成分共同起效的结果。该研究初步揭示了六君子汤中理气药陈皮挥发性成分的理气作用与脾虚胃动力调节的关联性,为探索补气方剂六君子汤中陈皮理气作用的物质基础提供一种新思路。

基于谱-效关系筛选菊茎叶总黄酮抗氧化物质基础及其机制探讨

为探讨菊茎叶总黄酮(total flavonoids from stems and leaves of Chrysanthemum morifolium,TFCSL)抗氧化应激的活性成分,阐明其药效物质基础和作用机制。采用HPLC建立不同批次TFCSL指纹图谱;以高浓度葡萄糖诱导人脐静脉内皮细胞建立氧化损伤模型,将丙二醛含量、乳酸脱氢酶含量和超氧化物歧化酶活性作为药效指标;采用灰色关联度和偏最小二乘法分析其谱-效关系确定抗氧化药效物质基础;基于网络药理学结合分子对接探究核心靶点及作用通路。从12批次TFCSL指纹图谱中确定12个共有峰,指认其中9个化学成分;各批次总黄酮样品均可减少细胞凋亡、降低丙二醛及乳酸脱氢酶含量、提高超氧化物歧化酶活性;综合2种数学模型确定峰5(芹菜素-7-O-β-D-葡萄糖苷)、峰6(异绿原酸C)、峰7(香叶木素-7-O-β-D-葡萄糖苷)为抗氧化物质基础;筛选出的3个活性成分作用于抗氧化应激的33个靶点;关键靶点为TNF、CASP3、EDNRA、XDH、PTGS2、MMP2,主要涉及脂质和动脉粥样硬化信号通路、IL-17信号通路、糖尿病并发症AGE-RAGE信号通路、TNF通路、MPKA通路等信号通路;分子对接结果显示活性成分与关键靶点之间均有较好的结合力。表明TFCSL抗氧化应激的物质基础可能为芹菜素-7-O-β-D-葡萄糖苷、异绿原酸C、香叶木素-7-O-β-D-葡萄糖苷,推测通过TNF、CASP3等靶点作用动脉粥样硬化信号通路、IL17信号通路发挥作用,体现菊茎叶多成分、多靶点抗氧化的作用特点。

热效应作用下高功率薄片涡旋激光器的模场结构

激光介质热效应引起的谐振腔模场结构变化成为高功率涡旋激光器的一个关键问题.本文建立了环形光泵浦薄片激光晶体的温度场及热形变计算模型,将热效应像差作为谐振腔衍射积分方程的微扰,研究热效应对激光器模场结构的影响规律.具体研究了Nd:YAG,Nd:YLF和Nd:YVO_(4)薄片涡旋激光器的模场结构随泵浦功率、晶体吸收系数、晶体厚度的变化规律.研究结果表明,热效应使涡旋激光器模谱产生径向展宽,模式纯净度下降.泵浦功率越大,高阶径向模式占比越大,模场结构越复杂.泵浦功率升高时,Nd:YVO_(4)激光器的模谱展宽最大,Nd:YAG激光器的模谱展宽最小.晶体吸收系数越大,模谱展宽越严重;激光晶体厚度减小时,模谱展宽呈增宽趋势.

不同道地产区黄芩的主要成分和抗氧化活性的比较研究

探究山东莱芜与河北承德两个道地产区黄芩的黄酮特征指纹图谱及其抗氧化能力的谱-效关系。在构建黄芩超高效液相色谱(ultra-performance liquid chromatography,UPLC)指纹图谱的基础上,采用体外抗氧化法测定25批不同道地产区黄芩对DPPH、ABTS、O_(2)^(-)自由基的清除能力,计算其半数抑制浓度(half maximal inhibitory concentration,IC_(50));运用正交偏最小二乘判别(orthogonal partial least-squares discrimination analysis,OPLS-DA)法和双变量相关性分析构建化学成分和抗氧化活性的谱-效关系。25批样品的指纹图谱相似度均大于0.983,确定了16个共有峰,采用超高效液相色谱串联四级杆飞行时间质谱联用法(ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry,UPLC-Q-TOF-MS)确认了12个化合物。两个道地产区的黄芩均具有较强的清除DPPH、ABTS和O_(2)^(-)自由基能力,其中山东莱芜黄芩的抗氧化能力优于河北承德黄芩。OPLS-DA所建的两个模型,均可成功区分两个道地产区的黄芩,且黄芩苷、黄芩素和千层纸素A-7-O-β-D-葡萄糖醛酸苷是二者的差异性标志成分。谱效分析发现,黄芩药材中黄酮类成分相互间可能对DPPH、ABTS、O_(2)^(-)自由基的清除能力具有协同增效作用。本研究建立了基于化学成分和抗氧化活性的黄芩谱效评价模式,可用于不同道地产区黄芩品质的评价,可为中药材的道地性研究提供帮助。

基于抗氧化谱效关系的肉苁蓉质量标志物研究

目的:建立基于抗氧化谱效关系的肉苁蓉质量标志物(Q-marker)研究方法,为其药效物质基础及质量控制研究提供依据。方法:采用超高效液相色谱法(UPLC)建立10批肉苁蓉指纹图谱。利用H2O2建立细胞氧化损伤模型,以活性氧自由基半数抑制率、超氧化物歧化酶和过氧化氢酶含量为药效指标测定肉苁蓉抗氧化能力。通过主成分分析、皮尔逊相关性分析和偏最小二乘法-回归分析共同构建谱效关系,并对筛选出的活性成分进行药效验证。结果:建立了肉苁蓉的UPLC指纹图谱,共确定了17个共有峰。基于谱效关联分析筛选出9个成分,活性成分验证结果显示京尼平苷酸、8-表马钱子酸、松果菊苷、毛蕊花糖苷、异毛蕊花糖苷、管花苷A具有抗氧化活性且呈浓度依赖性。结论:基于谱效关系探讨了肉苁蓉的Q-marker,为其药效物质基础及质量标准提升提供参考。

生物质炭和有机肥配施对水稻土溶解性有机质光谱学特征的影响

为探究生物质炭对水稻土壤溶解性有机质(DOM)的影响及其与有机肥配施的协同效应,通过5年连续定位试验,探讨了生物质炭施用5年后不同施肥处理:对照(CK)、生物质炭(BC)、化肥(F)、生物质炭+化肥(F+BC)、化肥+有机肥(25%氮替代,MF)和化肥+生物质炭+有机肥(25%氮替代,MF+BC)对水稻产量和土壤pH、全氮、有效磷、速效钾、有机碳、易氧化有机碳(ROC)及溶解性有机碳的影响。采用紫外-可见光谱、荧光光谱结合平行因子分析方法对土壤中DOM的光谱特征和荧光组分进行表征,分析了DOM的紫外光吸收系数和紫外光斜率系数以及荧光指数、腐殖化指数、生物指数和富里酸、色氨酸、胡敏酸相对含量。结果表明:施用生物质炭和有机肥均能有效提高水稻产量,缓解土壤酸化,并且MF+BC处理水稻产量和土壤有效磷含量最高。水稻产量与DOM生物可利用性、芳香化程度、腐殖化程度、色氨酸组分含量和亲水性呈显著正相关(P<0.05)。提高DOM生物可利用性和腐殖化程度均表现为有机肥大于生物质炭。生物质炭显著增加DOM富里酸和色氨酸组分含量,并且促进了水稻土中ROC向难氧化有机碳转化;而有机肥有效增加DOM富里酸、色氨酸、胡敏酸和ROC含量。生物质炭和有机肥协同配施对提升水稻产量及增加ROC、DOM富里酸和色氨酸含量、芳香化程度、腐殖化程度和生物可利用性方面具有交互作用。综上所述,在本研究条件下生物质炭配施有机肥在水稻增产和水稻土有机碳及DOM组分功能多样性提升方面具有长期效应。

湍流的多尺度效应与统计理论

湍流是一种由不同尺度、不同频率组成的不规则涡结构引起的随机现象。研究表明,在湍流脉动过程中虽然存在湍涡的多尺度效应及其演变,但两种尺度的涡最为重要,一种是与时均流动发生相互作用的大尺度涡,这类涡通过时均剪切作用,从时均流动中源源不断地提取能量以维持湍流的脉动;另一种是小尺度的耗散涡,这类涡与黏性尺度同量级,它们通过黏性而耗散湍流脉动。本文详细分析了湍涡的多尺度效应及其演变、大涡和小涡的量级比较,并在此基础上,阐述了湍流中任意两点脉动速度的相关性和频谱分布特性,以便为初学者提供参考。

基于灰色关联度分析和偏最小二乘回归辨识款冬花止咳活性成分

目的:款冬花具有止咳化痰的作用,以止咳为主。研究显示款冬花的某些成分可能与止咳作用相关,另有某些成分被证实具有止咳活性,但款冬花止咳药效的物质基础尚未阐明。本研究通过对款冬花提取物的高效液相色谱指纹图谱与止咳作用进行谱效相关分析,旨在阐明款冬花的止咳活性成分群。方法:采用高效液相色谱法建立10批款冬花提取物的指纹图谱并获得其化学成分数据;选用豚鼠作为实验动物,采用枸橼酸引咳法获得10批款冬花提取物的止咳药效数据。将SPF级健康雄性Hartley豚鼠随机分为S1~S10组、阳性对照组和空白对照组(共12组),每组10只,S1~S10组分别给予款冬花提取物S1~S10(4 g/kg),阳性对照组给予枸橼酸喷托维林(10 mg/kg),空白对照组给予纯化水,各组连续给药5 d,将豚鼠置于5 L容积的密闭广口瓶内,用超声雾化器以最大喷雾力度喷入17.5%的枸橼酸并持续0.5 min,记录每只豚鼠的咳嗽潜伏期和5 min内咳嗽次数。采用灰色关联度分析和偏最小二乘回归对款冬花提取物的化学成分数据和止咳药效数据进行谱效相关分析,预测款冬花的止咳活性成分群。对预测的款冬花止咳活性成分群进行等效性验证:将SPF级健康雄性Hartley豚鼠随机分为S9组、活性成分群组、阳性对照组和空白对照组(共4组),每组10只,S9组给予款冬花提取物S9(4 g/kg),活性成分群组给予预测的止咳活性成分组合物(剂量相当于4 g/kg的款冬花提取物S9),阳性对照组给予枸橼酸喷托维林(10 mg/kg),空白对照组给予纯化水,各组连续给药5 d,动物造模和药效指标观察同前。结果:共建立10批款冬花提取物的高效液相色谱指纹图谱并获得14个主要共有峰的峰面积数据;获得10批款冬花提取物的止咳药效数据。与空白对照组比较,阳性对照组及S1、S2、S3、S4、S6、S7、S8、S9、S10组的咳嗽潜伏期加长(均P<0.01),阳性对照组及S1、S2、S4、S6、S8、S9、S10组的5 min内咳嗽次数减少(均P<0.05)。谱效相关分析显示:异绿原酸C、异绿原酸A、绿原酸、异绿原酸B、异槲皮苷、芦丁6种成分对款冬花止咳作用的贡献度较高,初步判断为款冬花的止咳活性成分群。等效性验证显示:S9组、活性成分群组的2个药效指标的差异均无统计学意义(均P>0.05),证实异绿原酸C、异绿原酸A、绿原酸、异绿原酸B、异槲皮苷、芦丁为款冬花的止咳活性成分群。结论:谱效相关分析结合等效性验证可用于款冬花止咳药效物质基础研究。款冬花发挥止咳作用是多成分共同作用的结果。

中子成像的氢散射校正方法

中子成像可无损地探测样品内部的成份和结构等信息,已应用于诸多领域中材料的定量分析。中子成像对样品中的含氢物质进行定量分析时,由于氢的总散射截面大于吸收截面,散射中子会降低图像质量,严重干扰定量分析。已有的散射校正方法各自存在一定的局限性,或不适用所有样品、或增加曝光时间或数据处理复杂等。因此,本文提出了一种新的散射校正方法—双探测器法,并对水层样品进行实验验证。结果表明,校正后的水层厚度与实际厚度基本一致,验证了双探测器法是一种可行的散射校正方法。

铁路标准桥梁典型减隔震体系响应行为与谱分析方法

基于铁路标准桥梁3种典型减隔震设计体系,分析了结构的地震响应行为,重点研究了墩身质量的动力效应和减隔震体系的振型效应.结果显示:铁路标准桥梁墩身质量对桥墩的地震响应存在显著的动力效应,忽视该效应会导致墎顶位移和墎底弯矩的平均相对误差约达11%~32%,对主梁的地震位移影响较小,平均相对误差不超过5%;桥墩的地震响应主要受计算方向上的前2阶振型控制,其中第2阶振型以桥墩自振形态为主,振型阻尼可偏于安全地按结构阻尼比考虑;基于2阶振型效应的SRSS组合可以较好地考虑减隔震铁路标准桥梁的墩身质量动力效应,其预测墩底弯矩平均相对误差可下降至7.5%;AASHTO规范建议的多振型反应谱法适用于铁路标准桥梁典型减隔震体系的地震响应分析.